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03-Login management commands | 268.41 KB |
1 Login management commands
Some login management commands are available in both user line view and user line class view. For these commands, the device uses the following rules to determine the settings to be activated:
· A setting in user line view applies only to the user line. A setting in user line class view applies to all user lines of the class.
· A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
· A setting in user line class view takes effect on login sessions that are established after the setting is configured.
activation-key
Use activation-key to set the terminal session activation key. Pressing this shortcut key starts a terminal session.
Use undo activation-key to restore the default.
Syntax
activation-key key-string
undo activation-key
Default
The terminal session activation key is Enter.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
key-string: Specifies a shortcut key. It can be a character (case sensitive), or an ASCII code value in the range of 0 to 127. For example, if you configure activation-key 1, the shortcut key is Ctrl+A. If you configure activation-key a, the shortcut key is a. For information about ASCII code values of individual characters, see the standard ASCII code chart. For information about ASCII code values of combined keys that use the Ctrl key, see Table1-1.
Usage guidelines
This command is not supported in VTY line view or VTY line class view.
This command takes effect immediately.
This command is available in both user line view and user line class view. A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
You can use only the specified terminal session activation key to start a terminal session. To display the current terminal session activation key, use the display current-configuration | include activation-key command.
Table1-1 ASCII code values for combined keys that use the Ctrl key
Combined key |
ASCII code value |
Ctrl+A |
1 |
Ctrl+B |
2 |
Ctrl+C |
3 |
Ctrl+D |
4 |
Ctrl+E |
5 |
Ctrl+F |
6 |
Ctrl+G |
7 |
Ctrl+H |
8 |
Ctrl+I |
9 |
Ctrl+J |
10 |
Ctrl+K |
11 |
Ctrl+L |
12 |
Ctrl+M |
13 |
Ctrl+N |
14 |
Ctrl+O |
15 |
Ctrl+P |
16 |
Ctrl+Q |
17 |
Ctrl+R |
18 |
Ctrl+S |
19 |
Ctrl+T |
20 |
Ctrl+U |
21 |
Ctrl+V |
22 |
Ctrl+W |
23 |
Ctrl+X |
24 |
Ctrl+Y |
25 |
Ctrl+Z |
26 |
Examples
# Configure character s as the terminal session activation key for console line 0.
<Sysname> system-view
[Sysname] line console 0
[Sysname-line-console0] activation-key s
To verify the configuration:
1. Exit the console session.
[Sysname-line-console0] return
<Sysname> quit
2. Log in again through the console line.
The following message appears:
Press ENTER to get started.
3. Press Enter.
Pressing Enter does not start a session.
4. Press s.
A terminal session is started.
<Sysname>
authentication-mode
Use authentication-mode to set the authentication mode for a user line.
Use undo authentication-mode to restore the default.
Syntax
authentication-mode { none | password | scheme }
undo authentication-mode
Default
The authentication mode is none for console login.
The authentication mode is password for the VTY line.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
none: Disables authentication.
password: Performs local password authentication.
scheme: Performs AAA authentication. For more information about AAA, see User Access and Authentication Configuration Guide.
Usage guidelines
CAUTION: · When authentication is disabled, users can login without authentication. For security purpose, disable authentication with caution. · When you enable password authentication, you must also configure an authentication password for the line or line class. If no authentication password is configured, you cannot log in to the device through the line or line class at the next time. · When you enable scheme authentication, make sure an authentication user account is available. If no authentication user account is available, you cannot log in to the device through the line or line class at the next time. |
Only users assigned the network-admin, or level-15 user role can execute this command. Other users cannot execute this command, even if they are granted the right to execute this command.
In VTY line view, this command is associated with the protocol inbound command.
· If the settings of the two commands in VTY line view are both the default settings, the settings for the commands in VTY line class view take effect.
· If the settings of the two commands in VTY line view are both non-default settings, the non-default settings in VTY line view take effect.
· If only one command has a non-default setting in VTY line view, the other command uses the default setting, regardless of the setting in VTY line class view.
An authentication mode change does not take effect on the current session. It takes effect on subsequent login sessions.
Examples
# Enable the none authentication mode for VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] authentication-mode none
# Enable password authentication for VTY line 0 and set the password to hello12345.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] authentication-mode password
[Sysname-line-vty0] set authentication password simple hello12345
# Enable scheme authentication for VTY line 0. Configure local user 123 and set the password to hello12345. Assign the Telnet service and the user role network-admin to the user.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] authentication-mode scheme
[Sysname-line-vty0] quit
[Sysname] local-user 123
[Sysname-luser-manage-123] password simple hello12345
[Sysname-luser-manage-123] service-type telnet
[Sysname-luser-manage-123] authorization-attribute user-role network-admin
Related commands
set authentication password
auto-execute command
Use auto-execute command to specify the command to be automatically executed for a login user.
Use undo auto-execute command to restore the default.
Syntax
auto-execute command command
undo auto-execute command
Default
No command is specified to be automatically executed for a login user.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
command: Specifies the command to be automatically executed.
Usage guidelines
CAUTION: After configuring this command for a user line, you might be unable to access the CLI through the user line. Make sure you can access the CLI through a different user line before you configure this command and save the configuration. |
The device will automatically execute the specified command when a user logs in through the user line, and close the user connection after the command is executed.
This command is not supported in console line view or console line class view.
This command is available in both user line view and user line class view. A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
A configuration change made by this command does not take effect on the current session. It takes effect on subsequent login sessions.
Examples
# Configure the device to automatically execute the telnet 192.168.1.41 command when a user logs in through VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] auto-execute command telnet 192.168.1.41
This action will lead to configuration failure through line-vty0. Are you sure?
[Y/N]:y
[Sysname-line-vty0]
# To verify the configuration, Telnet to the device (192.168.1.40).
The device automatically Telnets to 192.168.1.41. The following output is displayed on the configuration terminal:
C:\> telnet 192.168.1.40
******************************************************************************
* Copyright (c) 2004-2020 New H3C Technologies Co., Ltd. All rights reserved.*
* Without the owner's prior written consent, *
* no decompiling or reverse-engineering shall be allowed. *
******************************************************************************
<Sysname>
Trying 192.168.1.41 ...
Press CTRL+K to abort
Connected to 192.168.1.41 ...
******************************************************************************
* Copyright (c) 2004-2020 New H3C Technologies Co., Ltd. All rights reserved.*
* Without the owner's prior written consent, *
* no decompiling or reverse-engineering shall be allowed. *
******************************************************************************
<Sysname.41>
This operation is the same as directly logging in to the device at 192.168.1.41 through Telnet. When you close the Telnet connection to 192.168.1.41, the Telnet connection to 192.168.1.40 is closed at the same time.
command accounting
Use command accounting to enable command accounting.
Use undo command accounting to disable command accounting.
Syntax
command accounting
undo command accounting
Default
Command accounting is disabled. The accounting server does not record executed commands.
Views
User line view
User line class view
Predefined user roles
network-admin
Usage guidelines
When command accounting is enabled but command authorization is not, every executed command is recorded on the accounting server. When both command accounting and command authorization are enabled, only authorized commands that are executed are recorded on the accounting server.
Invalid commands are not recorded.
A configuration change made by this command does not take effect on the current session. It takes effect on subsequent login sessions.
After you use the command accounting command in user line class view, you cannot use the undo command accounting command in any user line views in the class.
Examples
# Enable command accounting for VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] command accounting
Related commands
accounting command (User Access and Authentication Command Reference)
command authorization
command authorization
Use command authorization to enable command authorization.
Use undo command authorization to disable command authorization.
Syntax
command authorization
undo command authorization
Default
Command authorization is disabled. Logged-in users can execute commands without authorization.
Views
User line view
User line class view
Predefined user roles
network-admin
Usage guidelines
When command authorization is enabled, a user can only use commands that are permitted by both the AAA scheme and user role.
A configuration change made by this command does not take effect on the current session. It takes effect on subsequent login sessions.
If you configure the command authorization command in user line class view, command authorization is enabled for all user lines in the class. You cannot configure the undo command authorization command in the view of a user line in the class.
Examples
# Enable command authorization for VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] command authorization
Related commands
authorization command (User Access and Authentication Command Reference)
command accounting
display ip http
Use display ip http to display HTTP service configuration and status information.
Syntax
display ip http
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display HTTP service configuration and status information.
<Sysname> display ip http
HTTP port: 80
ACL: 2222(basic)
Operation status: Enabled
Table1-2 Command output
Field |
Description |
HTTP port |
HTTP service port number. |
ACL |
ACL used to control HTTP access. If no ACL is used, this field displays 0. · basic—Basic ACL. · advanced—Advanced ACL. · layer 2—Layer 2 ACL. |
Operation status |
Whether the HTTP service is enabled. |
Related commands
ip http acl
ip http enable
ip http port
display ip https
Use display ip https to display HTTPS service configuration and status information.
Syntax
display ip https
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display HTTPS service configuration and status information.
<Sysname> display ip https
HTTPS port: 443
SSL server policy: test
Certificate access-control-policy: Not configured
ACL: 3333(advanced)
Operation status: Enabled
Table1-3 Command output
Field |
Description |
HTTPS port |
HTTPS service port number. |
SSL server policy |
SSL server policy applied to the HTTPS service. If no SSL server policy is applied, this field displays Not configured. |
Certificate access-control-policy |
Certificate-based access control policy used to control client access rights. If no certificate-based access control policy is used, this field displays Not configured. |
ACL |
ACL used to control HTTPS access. If no ACL is used, this field displays 0. · basic—Basic ACL. · advanced—Advanced ACL. · layer 2—Layer 2 ACL. |
Operation status |
Whether the HTTPS service is enabled. |
Related commands
ip https acl
ip https enable
ip https port
ip https certificate access-control-policy
ip https ssl-server-policy
display line
Use display line to display user line information.
Syntax
display line [ number1 | { console | vty } number2 ] [ summary ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
number1: Specifies the absolute number of a user line, in the range of 0 to 64.
console: Specifies the console line.
vty: Specifies the VTY line.
number2: Specifies the relative number of a user line. The value range is 0 for the console line and 0 to 63 for VTY lines.
summary: Displays summary information about user lines. If you do not specify this keyword, the command displays detailed information.
Examples
# Display information about line 0.
<Sysname> display line 0
Idx Type Tx/Rx Modem Auth Int Location
+ 0 CON 0 9600 - N - 1/0
+ : Line is active.
F : Line is active and in async mode.
Idx : Absolute index of line.
Type : Type and relative index of line.
Auth : Login authentication mode.
Int : Physical port of the line.
A : Authentication use AAA.
N : No authentication is required.
P : Password authentication.
Table1-4 Command output
Field |
Description |
Modem |
Whether the modem allows calling in or out. By default, this attribute is not configured and this field displays a hyphen (-). This field is not supported in the current software version. |
Int |
Physical port for the line. If there is no physical port for the line or the port is a console port, this field displays a hyphen (-). |
Location |
Physical position of the line. |
A |
The authentication mode is scheme. |
N |
The authentication mode is none. |
P |
The authentication mode is password. |
# Display summary information about all user lines.
<Sysname> display line summary
Line type : [CON]
0:X
Line type : [VTY]
1:UXUU UUUU UUXX XXXX
17:XXXX XXXX XXXX XXXX
33:XXXX XXXX XXXX XXXX
49:XXXX XXXX XXXX XXXX
9 lines used. (U)
56 lines not used. (X)
Table1-5 Command output
Fields |
Description |
Type of the user line: · CON—Console line. · VTY—VTY line. |
|
number:status |
number: Absolute number of the first user line in the user line class. status: User line status. X is for unused and U is for used. |
display telnet client
Use display telnet client to display the packet source setting for the Telnet client.
Syntax
display telnet client
Views
Any view
Predefined user roles
network-admin
network-operator
Usage guidelines
This command displays the source IPv4 address or source interface specified for the Telnet client to use in outgoing Telnet packets, depending on the telnet client source command.
Examples
# Display the packet source setting for the Telnet client.
<Sysname> display telnet client
The source IP address is 1.1.1.1.
Related commands
telnet client source
display user-interface
Use display user-interface to display user line information.
Syntax
display user-interface [ number1 | { console | vty } number2 ] [ summary ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
number1: Specifies the absolute number of a user line, in the range of 0 to 64.
console: Specifies the console line.
vty: Specifies the VTY line.
number2: Specifies the relative number of a user line. The value range is 0 for the console line and 0 to 63 for VTY lines.
summary: Displays summary information about user lines. If you do not specify this keyword, the detailed information is displayed.
Usage guidelines
This command is an older version reserved for backward compatibility purposes. It has the same functionality and output as the display line command. As a best practice, use the display line command.
Examples
# Display information about line 0.
<Sysname> display user-interface 0
Idx Type Tx/Rx Modem Auth Int Location
+ 0 CON 0 9600 - N - 1/0
+ : Line is active.
F : Line is active and in async mode.
Idx : Absolute index of line.
Type : Type and relative index of line.
Auth : Login authentication mode.
Int : Physical port of the line.
A : Authentication use AAA.
N : No authentication is required.
P : Password authentication.
Table1-6 Command output
Field |
Description |
Modem |
Whether the modem allows calling in or out. By default, this attribute is not configured and this field displays a hyphen (-). This field is not supported in the current software version. |
Int |
Physical port for the line. If there is no physical port for the line or the port is a console port, this field displays a hyphen (-). |
Location |
Physical position of the line. |
A |
The authentication mode is scheme. |
N |
The authentication mode is none. |
P |
The authentication mode is password. |
# Display summary information about all user lines.
<Sysname> display user-interface summary
Line type : [CON]
0:X
Line type : [VTY]
1:UXUU UUUU UUXX XXXX
17:XXXX XXXX XXXX XXXX
33:XXXX XXXX XXXX XXXX
49:XXXX XXXX XXXX XXXX
9 lines used. (U)
56 lines not used. (X)
Table1-7 Command output
Fields |
Description |
Line type |
Type of the user line: · CON—Console line. · VTY—VTY line. |
number:status |
number: Absolute number of the first user line in the user line class. status: User line status. X is for unused and U is for used. |
display users
Use display users to display online CLI users.
Syntax
display users [ all ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
all: Displays all user lines supported by the device.
Examples
# Display online user information.
<Sysname> display users
Idx Line Idle Time Pid Type
+ 10 VTY 0 00:00:00 Jan 01 00:33:10 484 TEL
12 VTY 2 00:06:22 Jan 01 00:33:22 495 TEL
Following are more details.
VTY 0 :
Location: 192.168.1.107
VTY 2 :
Location: 192.168.1.134
+ : Current operation user.
F : Current operation user works in async mode.
Table1-8 Command output
Field |
Description |
Idx |
Absolute number of the user line. |
Line |
Type and relative number of the user line. |
Idle |
Time elapsed after the user's most recent input, in the hh:mm:ss format. |
Time |
Login time of the user. |
Pid |
Process ID of the user session. |
Type |
User type: · TEL—Telnet user. · SSH—SSH user. For a user who logged in through the console port, this field does not display anything. |
+ |
User line you are using. |
Location |
IP address of the user. |
display web menu
Use display web menu to display Web interface navigation tree information.
Syntax
display web menu [ chinese ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
chinese: Displays information about the Chinese Web interface navigation tree. If you do not specify this keyword, the command displays information about the English Web interface navigation tree.
Usage guidelines
This command displays all options on the Web interface navigation tree.
Examples
# Display Web interface navigation tree information.
<Sysname> display web menu
.
|--m_system: ID = m_system
| |--m_dashboard: ID = m_dashboard
| |--m_clientinfor: ID = m_clientinfor
| |--m_rateanalyse: ID = m_rateanalyse
| |--m_deviceinfor: ID = m_deviceinfor
| `--m_networkinfor: ID = m_networkinfor
|--m_quicknav: ID = m_quicknav
| `--i_quicknav: ID = i_quicknav
|--m_networkcfg: ID = m_networkcfg
| `--i_networkcfg: ID = i_networkcfg
|--m_wirelesscfg: ID = m_wirelesscfg
| `--i_wirelesscfg: ID = i_wirelesscfg
|--m_usermanager: ID = m_usermanager
| `--i_usermanager: ID = i_usermanager
|--m_securitypolicy: ID = m_securitypolicy
| `--i_securitypolicy: ID = i_securitypolicy
|--m_appmanager: ID = m_appmanager
| `--i_appmanager: ID = i_appmanager
`--m_systemcfg: ID = m_systemcfg
`--i_systemcfg: ID = i_systemcfg
display web users
Use display web users to display online Web users.
Syntax
display web users
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display online Web users.
<Sysname> display web users
UserID Name Type Language JobCount LoginTime LastOperation
AB2039483271293 Administrator HTTP Chinese 3 12:00:23 14:10:05
F09382BA2014AC8 user HTTPS English 1 13:05:00 14:11:00
Table1-9 Command output
Field |
Description |
UserID |
ID used to uniquely identify the online Web user. |
JobCount |
Number of connections established by the user. |
escape-key
Use escape-key to set the escape key.
Use undo escape-key to disable the escape key.
Syntax
escape-key { key-string | default }
undo escape-key
Default
The escape key is Ctrl+C.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
key-string: Specifies a shortcut key. It can be a character (case sensitive, except for d and D), or an ASCII code value in the range of 0 to 127. For example, if you configure escape-key 1, the shortcut key is Ctrl+A. If you configure escape-key a, the shortcut key is a. If you specify the character d or D for this argument, the actual shortcut key is Ctrl+C. To use d or D as the shortcut key, you must specify the ASCII code value of the character for this argument. For information about ASCII code values of individual characters, see the standard ASCII code chart. For information about ASCII code values of combined keys that use the Ctrl key, see Table1-1.
default: Restores the default escape key Ctrl+C.
Usage guidelines
You can press the escape key to abort a command that is being executed, for example, a ping or tracert command. Whether a command can be aborted by Ctrl+C by default depends on the software implementation of the command. For more information, see the usage guidelines for the command.
As a best practice, use a key sequence as the escape key. If you define a single character as the escape key, pressing the key while a command is being executed stops the command. If no command is being executed, pressing the key enters the character as a common character. If you Telnet from the device to a remote device, pressing the key enters the character as a common character on the remote device. The key acts as the escape key on the remote device only when the following conditions are met:
· You define the same character as the escape key on the remote device.
· You press the key while a command is being executed on the remote device.
The undo escape-key command disables the current escape key. After you execute this undo command, no escape key is available.
This command is available in both user line view and user line class view. A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
The setting in user line view takes effect immediately on the current session. The setting in user line class view takes effect on login sessions that are established after the setting is configured.
To display the current escape key, use the display current-configuration | include escape-key command.
Examples
# Configure character a as the escape key for VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] escape-key a
To verify the configuration:
1. Ping IP address 192.168.1.49, specifying the -c keyword to set the number of ICMP echo request packets to 20.
<Sysname> ping -c 20 192.168.1.49
PING 192.168.1.49: 56 data bytes, press a to break
Reply from 192.168.1.49: bytes=56 Sequence=1 ttl=255 time=3 ms
Reply from 192.168.1.49: bytes=56 Sequence=2 ttl=255 time=3 ms
2. Press a.
The system aborts the command and returns to user view.
--- 192.168.1.49 ping statistics ---
2 packet(s) transmitted
2 packet(s) received
0.00% packet loss
round-trip min/avg/max = 3/3/3 ms
<Sysname>
free line
Use free line to release a user line.
Syntax
free line { number1 | { console | vty } number2 }
Views
User view
Predefined user roles
network-admin
Parameters
number1: Specifies the absolute number of a user line, in the range of 0 to 64.
console: Specifies the console line.
vty: Specifies the VTY line.
number2: Specifies the relative number of a user line. The value range is 0 for the console line and 0 to 63 for VTY lines.
Usage guidelines
This command does not release the line you are using.
Examples
# Release VTY line 1.
<Sysname> free line vty 1
Are you sure to free line vty1? [Y/N]:y
[OK]
free user-interface
Use free user-interface to release a user line.
Syntax
free user-interface { number1 | { console | vty } number2 }
Views
User view
Predefined user roles
network-admin
Parameters
number1: Specifies the absolute number of a user line, in the range of 0 to 64.
console: Specifies the console line.
vty: Specifies the VTY line.
number2: Specifies the relative number of a user line. The value range is 0 for the console line and 0 to 63 for VTY lines.
Usage guidelines
This command does not release the line you are using.
This command is an older version reserved for backward compatibility purposes. It has the same functionality and output as the free line command. As a best practice, use the free line command.
Examples
# Release VTY line 1.
<Sysname> free user-interface vty 1
Are you sure to free line vty1? [Y/N]:y
[OK]
free web users
Use free web users to log off online Web users.
Syntax
free web users { all | user-id user-id | user-name user-name }
Views
User view
Predefined user roles
network-admin
Parameters
all: Specifies all Web users.
user-id user-id: Specifies a Web user by the ID, a hexadecimal number of 15 digits. The system assigns each Web user a unique ID at login to identify the user.
user-name: Specifies a Web user by the username, a case-sensitive string of 1 to 255 characters.
Examples
# Log off all online Web users.
<Sysname> free web users all
Related commands
display web users
history-command max-size
Use history-command max-size to set the size of the command history buffer for a user line.
Use undo history-command max-size to restore the default.
Syntax
history-command max-size size-value
undo history-command max-size
Default
The command history buffer for a user line stores up to 10 history commands.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
size-value: Specifies the maximum number of history commands the buffer can store, in the range of 0 to 256.
Usage guidelines
Each user line uses a separate command history buffer to store commands successfully executed by its user. The buffer size determines how many history commands the buffer can store.
To display history commands in the buffer for your session, press the up or down arrow key, or execute the display history-command command. For more information about the command history buffer, see Fundamentals Configuration Guide.
Terminating a CLI session clears the commands in the command history buffer.
The setting in user line view takes effect immediately on the current session. The setting in user line class view takes effect on login sessions that are established after the setting is configured.
Examples
# Set the command history buffer size to 20 for VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] history-command max-size 20
http method
Use http method to specify the HTTP methods to be added to the reply to an OPTIONS request.
Use undo http method to remove the HTTP methods to be added to the reply to an OPTIONS request.
Syntax
http method { delete | get | head | options | post | put } *
undo http method { delete | get | head | options | post | put } *
Default
No HTTP methods are specified.
Views
System view
Predefined user roles
network-admin
Parameters
delete: Specifies the DELETE method.
get: Specifies the GET method.
head: Specifies the HEAD method.
options: Specifies the OPTIONS method.
post: Specifies the POST method.
put: Specifies the PUT method.
Usage guidelines
An HTTP client sends an OPTIONS request to the device to obtain the HTTP methods supported by the device. The device identifies whether the requested URL resources have a service that has registered for the OPTIONS method.
· If yes, the service responds to the OPTIONS request.
· If not, the device identifies whether the options keyword is specified for this command.
¡ If yes, the device uses the settings for this command to generate and return a reply to the OPTIONS request.
¡ If not, the device returns the 405 Method Not Allowed message.
This command does not affect HTTP requests except for OPTIONS requests.
Examples
# Specify GET, HEAD, POST, and OPTIONS methods as the HTTP methods to be added to the reply to an OPTIONS request.
<Sysname> system-view
[Sysname] http method get head post options
idle-timeout
Use idle-timeout to set the CLI connection idle-timeout timer.
Use undo idle-timeout to restore the default.
Syntax
idle-timeout minutes [ seconds ]
undo idle-timeout
Default
The CLI connection idle-timeout timer is 10 minutes.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
minutes: Specifies the number of minutes, in the range of 0 to 35791.
seconds: Specifies the number of seconds, in the range of 0 to 59. The default is 0 seconds.
Usage guidelines
The system automatically terminates a user connection if no information interaction occurs on the connection within the idle-timeout interval.
To disable the idle-timeout feature, execute the idle-timeout 0 command.
This command is available in both user line view and user line class view. A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
The setting in user line view takes effect immediately on the current session. The setting in user line class view takes effect on login sessions that are established after the setting is configured.
Examples
# Set the CLI connection idle-timeout timer to 1 minute and 30 seconds for VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] idle-timeout 1 30
ip http acl
Use ip http acl to apply an ACL to the HTTP service.
Use undo ip http acl to restore the default.
Syntax
ip http acl [ advanced | mac ] { acl-number | name acl-name }
undo ip http acl
Default
No ACL is applied to the HTTP service.
Views
System view
Predefined user roles
network-admin
Parameters
advanced: Specifies an advanced ACL.
mac: Specifies a Layer 2 ACL.
acl-number: Specifies an ACL number in the range of 2000 to 4999.
· 2000 to 2999 for a basic ACL.
· 3000 to 3999 for an advanced ACL.
· 4000 to 4999 for a Layer 2 ACL.
name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters. It must start with an English letter and to avoid confusion, it cannot be all. The specified ACL takes effect only when the ACL exists.
Usage guidelines
If you do not specify the advanced or mac keyword, specify an IPv4 basic ACL.
In an advanced ACL applied to the HTTP service, only the following match criteria take effect:
· Source and destination IP addresses.
· Source and destination ports.
· Transport layer protocol.
In a Layer 2 ACL applied to the HTTP service, only the source MAC address match criterion takes effect.
When no ACL is applied to the HTTP service or the applied ACL does not exist or does not have rules, all clients can access the device through HTTP. To control HTTP access, specify an ACL that exists and has rules so only clients permitted by the ACL can access the device through HTTP.
If you execute this command multiple times, the most recent configuration takes effect.
For more information about ACL, see Security Configuration Guide.
Examples
# Use ACL 2001 to allow only users from 10.10.0.0/16 to access the device through HTTP.
<Sysname> system-view
[Sysname] acl basic 2001
[Sysname-acl-ipv4-basic-2001] rule permit source 10.10.0.0 0.0.255.255
[Sysname-acl-ipv4-basic-2001] quit
[Sysname] ip http acl 2001
Related commands
acl (Security Command Reference)
ip http enable
Use ip http enable to enable the HTTP service.
Use undo ip http enable to disable the HTTP service.
Syntax
ip http enable
undo ip http enable
Default
The HTTP service is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
To allow users to access the device through HTTP, you must enable the HTTP service.
To improve device security, the system automatically enables the HTTPS service when you enable the HTTP service. When the HTTP service is enabled, you cannot disable the HTTPS service.
Examples
# Enable the HTTP service.
<Sysname> system-view
[Sysname] ip http enable
Related commands
ip https enable
ip http port
Use ip http port to specify the HTTP service port number.
Use undo ip http port to restore the default.
Syntax
ip http port port-number
undo ip http port
Default
The HTTP service port number is 80.
Views
System view
Predefined user roles
network-admin
Parameters
port-number: Specifies a port number in the range of 1 to 65535.
Usage guidelines
When the HTTP service is enabled, changing the HTTP service port number re-enables the HTTP service and closes all HTTP connections. To log in again, users must enter the new URL in the Web browser's address bar.
Examples
# Set the HTTP service port number to 80.
<Sysname> system-view
[Sysname] ip http port 80
ip https acl
Use ip https acl to apply an ACL to the HTTPS service.
Use undo ip https acl to restore the default.
Syntax
ip https acl [ advanced | mac ] {acl-number | name acl-name }
undo ip https acl
Default
No ACL is applied to the HTTPS service.
Views
System view
Predefined user roles
network-admin
Parameters
advanced: Specifies an advanced ACL.
mac: Specifies a Layer 2 ACL.
acl-number: Specifies an ACL number in the range of 2000 to 4999.
· 2000 to 2999 for a basic ACL.
· 3000 to 3999 for an advanced ACL.
· 4000 to 4999 for a Layer 2 ACL.
name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters. It must start with an English letter and to avoid confusion, it cannot be all. The specified ACL takes effect only when the ACL exists.
Usage guidelines
If you do not specify the advanced or mac keyword, specify an IPv4 basic ACL.
In an advanced ACL applied to the HTTPS service, only the following match criteria take effect:
· Source and destination IP addresses.
· Source and destination ports.
· Transport layer protocol.
In a Layer 2 ACL applied to the HTTPS service, only the source MAC address match criterion takes effect.
When no ACL is applied to the HTTPS service or the applied ACL does not exist or does not have rules, all clients can access the device through HTTPS. To control HTTPS access, specify an ACL that exists and has rules so only clients permitted by the ACL can access the device through HTTPS.
Because the device always uses HTTPS to transfer Web login requests, the ACL applied to the HTTPS service controls both HTTPS and HTTP logins. To access the device, HTTP clients must be permitted by the following ACLs:
· ACL applied to the HTTP service.
· ACL applied to the HTTPS service.
If you execute this command multiple times, the most recent configuration takes effect.
For more information about ACL, see Security Configuration Guide.
Examples
# Use ACL 2001 to allow only users from 10.10.0.0/16 to access the device through HTTPS or HTTP.
<Sysname> system-view
[Sysname] acl basic 2001
[Sysname-acl-ipv4-basic-2001] rule permit source 10.10.0.0 0.0.255.255
[Sysname-acl-ipv4-basic-2001] quit
[Sysname] ip https acl 2001
Related commands
acl (Security Command Reference)
ip https certificate access-control-policy
Use ip https certificate access-control-policy to apply a certificate-based access control policy to control HTTPS access.
Use undo ip https certificate access-control-policy to restore the default.
Syntax
ip https certificate access-control-policy policy-name
undo ip https certificate access-control-policy
Default
No certificate-based access control policy is applied for HTTPS access control.
Views
System view
Predefined user roles
network-admin
Parameters
policy-name: Specifies a certificate-based access control policy by its name, a case-sensitive string of 1 to 31 characters.
Usage guidelines
For more information about the certificate-based access control policy, see PKI configuration in Security Configuration Guide.
Examples
# Use certificate-based access control policy myacl to control HTTPS access.
<Sysname> system-view
[Sysname] ip https certificate access-control-policy myacl
Related commands
pki certificate access-control-policy (Security Command Reference)
ip https enable
Use ip https enable to enable the HTTPS service.
Use undo ip https enable to disable the HTTPS service.
Syntax
ip https enable
undo ip https enable
Default
The HTTPS service is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
To allow users to access the device through HTTPS, you must enable the HTTPS service.
Enabling the HTTPS service triggers the SSL handshake negotiation process.
· If the device has a local certificate, the SSL handshake negotiation succeeds and the HTTPS service starts up.
· If the device does not have a local certificate, the certificate application process starts. Because the certificate application process takes a long time, the SSL handshake negotiation might fail and the HTTPS service might not be started. To solve the problem, execute this command again until the HTTPS service is enabled.
Examples
# Enable the HTTPS service.
<Sysname> system-view
[Sysname] ip https enable
Related commands
ip https certificate access-control-policy
ip https ssl-server-policy
ip https port
Use ip https port to specify the HTTPS service port number.
Use undo ip https port to restore the default.
Syntax
ip https port port-number
undo ip https port
Default
The HTTPS service port number is 443.
Views
System view
Predefined user roles
network-admin
Parameters
port-number: Specifies a port number in the range of 1 to 65535.
Usage guidelines
When the HTTPS service is enabled, changing the HTTPS service port number re-enables the HTTPS service and closes all HTTPS and HTTP connections. To log in again, users must enter the new URL in the Web browser's address bar.
Examples
# Set the HTTPS service port number to 8080.
<Sysname> system-view
[Sysname] ip https port 8080
ip https ssl-server-policy
Use ip https ssl-server-policy to apply an SSL server policy to control HTTPS access.
Use undo ip https ssl-server-policy to restore the default.
Syntax
ip https ssl-server-policy policy-name
undo ip https ssl-server-policy
Default
No SSL server policy is applied. The HTTPS service uses a self-signed certificate.
Views
System view
Predefined user roles
network-admin
Parameters
policy-name: Specifies an SSL server policy name, a string of 1 to 31 characters.
Usage guidelines
If the HTTP service and HTTPS service are enabled, changes to the applied SSL server policy do not take effect. For the changes to take effect, you must disable HTTP and HTTPS, and then apply the policy and enable HTTP and HTTPS again.
To restore the default, you must disable HTTP and HTTPS, execute the undo ip https ssl-server-policy command, and then enable HTTP and HTTPS again.
Examples
# Apply SSL server policy myssl to the HTTPS service.
<Sysname> system-view
[Sysname] ip https ssl-server-policy myssl
Related commands
ssl server-policy (Security Command Reference)
line
Use line to enter one or multiple user line views.
Syntax
line { first-number1 [ last-number1 ] | { console | vty } first-number2 [ last-number2 ] }
Views
System view
Predefined user roles
network-admin
Parameters
first-number1: Specifies the absolute number of the first user line, in the range of 0 to 64.
last-number1: Specifies the absolute number of the last user line, in the range of 1 to 64. This number must be greater than first-number1.
console: Specifies the console line.
vty: Specifies the VTY line.
first-number2: Specifies the relative number of the first user line. The value range is 0 for the console line and 0 to 63 for VTY lines.
last-number2: Specifies the relative number of the last user line. This argument is not supported for the console line. The value range is 1 to 63 for VTY lines.This number must be greater than first-number2.
Examples
# Enter the view of VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0]
# Enter the views of VTY lines 0 to 31.
<Sysname> system-view
[Sysname] line vty 0 31
[Sysname-line-vty0-31]
Related commands
line class
line class
Use line class to enter user line class view.
Syntax
line class { console | vty }
Views
System view
Predefined user roles
network-admin
Parameters
console: Specifies the console line class view.
vty: Specifies the VTY line class view.
Usage guidelines
To configure the same settings for all user lines of a line class, use this command to enter the user line class view.
In user line class view, you can execute the following commands:
· activation-key
· authentication-mode
· auto-execute command
· command accounting
· command authorization
· escape-key
· history-command max-size
· idle-timeout
· protocol inbound
· screen-length
· set authentication password
· shell
· terminal type
· user-role
For commands that are available in both user line view and user line class view, the device uses the following rules to determine the settings to use:
· A setting in user line view applies only to the user line. A setting in user line class view applies to all user lines of the class.
· A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
· A setting in user line class view does not take effect on current online users. It takes effect only for new login users.
Examples
# Set the CLI connection idle-timeout timer to 15 minutes in VTY line class view.
<Sysname> system-view
[Sysname] line class vty
[Sysname-line-class-vty] idle-timeout 15
# In console line class view, configure the character s as the terminal session activation key.
<Sysname> system-view
[Sysname] line class console
[Sysname-line-class-console] activation-key s
[Sysname-line-class-console] quit
# In the view of console line 0, restore the default terminal session activation key.
[Sysname] line console 0
[Sysname-line-console0] undo activation-key
Alternatively, you can use the following command:
[Sysname-line-console0] activation-key 13
To verify the configuration:
1. Exit the session on console line 0.
[Sysname-line-console0] return
<Sysname> quit
2. Log in again through the user line.
The following message appears:
Press ENTER to get started.
3. Press Enter.
Pressing Enter does not start a session.
4. Enter s.
A terminal session is started.
<Sysname>
Related commands
line
lock
Use lock to lock the current user line and set the password for unlocking the line.
Syntax
lock
Default
The system does not lock any user lines.
Views
User view
Predefined user roles
network-admin
Usage guidelines
This command locks the current user line to prevent unauthorized users from using the line. You must set the password for unlocking the line as prompted. The user line is locked after you enter the password and confirm the password.
To unlock the user line, press Enter and enter the password you set.
Examples
# Lock the current user line and set the password for unlocking the line.
<Sysname> lock
Please input password<1 to 16> to lock current line:
Password:
Again:
locked !
// The user line is locked. To unlock it, press Enter and enter the password:
Password:
<Sysname>
lock reauthentication
Use lock reauthentication to lock the current user line and enable unlocking authentication.
Syntax
lock reauthentication
Default
The system does not lock any user lines or initiate reauthentication.
Views
Any view
Predefined user roles
network-admin
Usage guidelines
This command locks the current user line. To unlock the user line, you must press Enter and provide the login password to pass reauthentication. If you have changed the login password after login, you must provide the new password. If no login password is set, the system unlocks the user line after you press Enter.
Examples
# Lock the current user line and enable unlocking authentication.
<Sysname> lock reauthentication
Please press Enter to unlock the screen.
// The user line is locked. To unlock it, press Enter and enter the login password:
Password:
<Sysname>
Related commands
lock-key
lock-key
Use lock-key to set the user line locking key. Pressing this shortcut key locks the current user line and enables unlocking authentication.
Use undo lock-key to restore the default.
Syntax
lock-key key-string
undo lock-key
Default
No user line locking key is set.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
key-string: Specifies a shortcut key. It can be a character (case sensitive), or an ASCII code value in the range of 0 to 127. For example, if you configure lock-key 1, the shortcut key is Ctrl+A. If you configure lock-key a, the shortcut key is a. For information about ASCII code values of individual characters, see the standard ASCII code chart. For information about ASCII code values of combined keys that use the Ctrl key, see Table1-1.
Usage guidelines
As a best practice, specify a combined key as the user line locking key. If you specify a single character as the key, the character acts only as the user line locking key. You cannot type the character for any commands, keywords, or arguments.
Pressing the user line locking key is equivalent to executing the lock reauthentication command.
This command takes effect immediately.
To display the current user line locking key, use the display current-configuration | include lock-key command.
Examples
# Set the user line locking key to Ctrl+A for VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] lock-key 1
[Sysname-line-vty0] quit
To verify the configuration:
1. Press Ctrl+A.
[Sysname]
Please press Enter to unlock the screen.
2. Press Enter and enter the login password.
Password:
[Sysname]
Related commands
lock reauthentication
protocol inbound
Use protocol inbound to specify the supported protocols.
Use undo protocol inbound to restore the default.
Syntax
protocol inbound { all| ssh | telnet }
undo protocol inbound
Default
All of the protocols are supported.
Views
VTY line view
VTY line class view
Predefined user roles
network-admin
Parameters
all: Supports both Telnet and SSH.
ssh: Supports SSH only.
telnet: Supports Telnet only.
Usage guidelines
Only users assigned the network-admin, or level-15 user role can execute this command. Other users cannot execute this command, even if they are granted the right to execute this command.
A configuration change in user line view does not take effect on the current session. It takes effect on subsequent login sessions.
Before configuring a user line to support SSH, set the authentication mode to scheme for the user line.
In VTY line view, this command is associated with the authentication-mode command. If you specify a non-default value for one of the two commands, the other command uses the default setting, regardless of the setting in VTY line class view.
· If the settings of the two commands in VTY line view are both the default settings, the settings for the commands in VTY line class view take effect.
· If the settings of the two commands in VTY line view are both non-default settings, the non-default settings in VTY line view take effect.
· If only one command has a non-default setting in VTY line view, the other command uses the default setting, regardless of the setting in VTY line class view.
Examples
# Enable user lines VTY 0 through VTY 4 to support only SSH.
<Sysname> system-view
[Sysname] line vty 0 4
[Sysname-line-vty0-4] authentication-mode scheme
[Sysname-line-vty0-4] protocol inbound ssh
# Enable SSH support and set the authentication mode to scheme in VTY line class view. Enable user lines VTY 0 through VTY 4 to support all protocols and disable authentication for the user lines.
<Sysname> system-view
[Sysname] line class vty
[Sysname-line-class-vty] authentication-mode scheme
[Sysname-line-class-vty] protocol inbound ssh
[Sysname-line-class-vty] line vty 0 4
[Sysname-line-vty0-4] authentication-mode none
To verify the configuration:
1. Telnet to the device.
<Client> telnet 192.168.1.241
Trying 192.168.1.241 ...
Press CTRL+K to abort
Connected to 192.168.1.241 ...
******************************************************************************
* Copyright (c) 2004-2020 New H3C Technologies Co., Ltd. All rights reserved.*
* Without the owner's prior written consent, *
* no decompiling or reverse-engineering shall be allowed. *
******************************************************************************
<Server>
You are logged in without authentication.
2. Display online CLI user information.
<Server> display users
Idx Line Idle Time Pid Type
+ 50 VTY 0 00:00:00 Jan 17 15:29:27 189 TEL
Following are more details.
VTY 0 :
Location: 192.168.1.186
+ : Current operation user.
F : Current operation user works in async mode.
The output shows that you are using VTY 0. The configuration in user line view is effective.
Related commands
authentication-mode
screen-length
Use screen-length to set the maximum number of lines of command output to send to the terminal at a time when the screen pausing feature is enabled.
Use undo screen-length to restore the default.
Syntax
screen-length screen-length
undo screen-length
Default
A maximum of 24 lines are sent.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
screen-length: Specifies the maximum number of lines to send, in the range of 0 to 512. To send command output without pausing, set the number to 0 or execute the screen-length disable command.
Usage guidelines
The number of lines that can be displayed on the terminal screen is restricted by both this setting and the display specification of the terminal. For example, if this setting is 40, the device sends 40 lines to the terminal at a time. If the terminal display specification is 24 lines, only the last 24 lines are displayed on the terminal screen. To view the previous 16 lines, you must press PgUp.
To continue to display command output after a pause, press the space bar.
By default, pausing between screens of output is enabled.
This command is available in both user line view and user line class view. A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
The setting in user line view takes effect immediately on the current session. The setting in user line class view takes effect on login sessions that are established after the setting is configured.
Examples
# Set the maximum number of lines to send at a time to 30 for VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] screen-length 30
screen-length disable
send
Use send to send messages to online login users.
Syntax
send { all | number1 | { console | vty } number2 }
Views
User view
Predefined user roles
network-admin
Parameters
all: Specifies all user lines.
number1: Specifies the absolute number of a user line, in the range of 0 to 64.
console: Specifies the console line.
vty: Specifies the VTY line.
number2: Specifies the relative number of a user line.The value range is 0 for the console line and 0 to 63 for VTY lines.
Usage guidelines
You can use this command to send notifications to online users before performing an operation that might affect other online users, for example, before rebooting the device.
To end a message, press Enter. To abort the send operation, press Ctrl+C.
Examples
# Send a notification to the user on VTY 1.
<Sysname> send vty 1
Input message, end with Enter; abort with CTRL+C:
Your attention, please. I will reboot the system in 3 minutes.
Send message? [Y/N]:y
The message should appear on the user's terminal screen as follows:
[Sysname]
***
***
***Message from vty0 to vty1
***
Your attention, please. I will reboot the system in 3 minutes.
set authentication password
Use set authentication password to set the password for local password authentication.
Use undo set authentication password to restore the default.
Syntax
set authentication password { hash | simple } string
undo set authentication password
Default
No password is set for local password authentication.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
hash: Specifies a password in hashed form.
simple: Sets a password in plaintext form. For security purposes, the password specified in plaintext form will be stored in hashed form.
string: Specifies the password. Its plaintext form is a case-sensitive string of 4 to 16 characters and must contain a minimum of two character types. Its hashed form is a case-sensitive string of 1 to 110 characters.
Usage guidelines
Only users assigned the network-admin, or level-15 user role can execute this command. Other users cannot execute this command, even if they are granted the right to execute this command.
This command is available in both user line view and user line class view. A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
A password change does not take effect on the current session. It takes effect on subsequent login sessions.
When a user logs in to the device, the device performs login password complexity check for the user.
· If a user logs in to the device with the default password, the system forcibly requests the user to change its password to a password that meets the system requirements.
· If a user logs in to the device with a less complicated password (not the default password), the system prompts the user to change its password. As a best practice to ensure device security, change the password to a password that meets the system requirements.
Examples
# Set the password to hello12345 for local password authentication on VTY line 0.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] authentication-mode password
[Sysname-line-vty0] set authentication password simple hello12345
Related commands
authentication-mode
shell
Use shell to enable the terminal service for user lines.
Use undo shell to disable the terminal service for user lines.
Syntax
shell
undo shell
Default
The terminal service is enabled on all user lines.
Views
User line view
User line class view
Predefined user roles
network-admin
Usage guidelines
The undo shell command is not supported in console line view or console line class view.
You cannot disable the terminal service on the user line you are using.
When the device acts as a Telnet or SSH server, you cannot configure the undo shell command.
If the undo shell command is configured in user line class view, you cannot configure the shell command in the view of a user line in the class.
Examples
# Disable the terminal service for VTY lines VTY 0 through 4 so no user can log in to the device through the user lines.
<Sysname> system-view
[Sysname] line vty 0 4
[Sysname-line-vty0-4] undo shell
Disable ui-vty0-4 , are you sure? [Y/N]:y
[Sysname-line-vty0-4]
telnet
Use telnet to Telnet to a host in an IPv4 network.
Syntax
telnet remote-host [ service-port ] [ source { interface interface-type interface-number | ip ip-address } ] [ dscp dscp-value ] [ escape character ]
Views
User view
Predefined user roles
network-admin
Parameters
remote-host: Specifies the IPv4 address or host name of a remote host. A host name can be a case-insensitive string of 1 to 253 characters. Valid characters include letters, digits, hyphens (-), underscores (_), and dots (.).
service-port: Specifies the TCP port number for the Telnet service on the remote host. The value range is 0 to 65535 and the default is 23.
source: Specifies a source IPv4 address or source interface for outgoing Telnet packets. If you do not specify this option, the device uses the primary IPv4 address of the output interface for the route to the server as the source address.
interface interface-type interface-number: Specifies the source interface. The primary IPv4 address of the interface will be used as the source IPv4 address for outgoing Telnet packets.
ip ip-address: Specifies the source IPv4 address for outgoing Telnet packets.
dscp dscp-value: Specifies a DSCP value for outgoing Telnet packets. The value range is 0 to 63. The default is 48.
escape character: Specifies an escape character. You can use the escape character together with a dot (.) as the escape key to terminate the current Telnet connection and return to the upper level connection. The value for the character argument is case sensitive and must be different from the login username. As a best practice, specify a tilde (~) for the character argument.
Usage guidelines
Methods for terminating Telnet connections include:
· Pressing Ctrl+K—Terminates all Telnet connections. You can use this method in any scenarios unless you configure an escape character. After you configure an escape character, pressing Ctrl+K does not terminate Telnet connections.
· Executing the quit command—Terminates the current Telnet connection and returns to the upper level connection. This method is not available when the Telnet server reboots or fails.
· Using the escape key—Terminates the current Telnet connection and returns to the upper level connection. You can use this method in any scenarios.
To use the escape key to terminate the current Telnet connection, enter the escape character and a dot in a new line. If you enter any other characters or perform any other operations (for example, pressing the backspace key) before entering the escape character, the escape character does not take effect.
The source address or interface specified by this command is applied only to the Telnet connection that is being established.
Examples
# Telnet to host 1.1.1.2, using 1.1.1.1 as the source IP address for outgoing Telnet packets.
<Sysname> telnet 1.1.1.2 source ip 1.1.1.1
Related commands
telnet client source
telnet client source
Use telnet client source to specify a source IPv4 address or source interface for the Telnet client to use for outgoing Telnet packets.
Use undo telnet client source to restore the default.
Syntax
telnet client source { interface interface-type interface-number | ip ip-address }
undo telnet client source
Default
No source IPv4 address or source interface is specified. The Telnet client uses the primary IPv4 address of the output interface for the route to the server as the source IPv4 address.
Views
System view
Predefined user roles
network-admin
Parameters
interface interface-type interface-number: Specifies a source interface. The primary IPv4 address of the interface will be used as the source IPv4 address for outgoing Telnet packets.
ip ip-address: Specifies a source IPv4 address.
Usage guidelines
The setting configured by this command applies to all Telnet connections but has a lower precedence than the source setting specified for the telnet command.
Examples
# Set the source IPv4 address to 1.1.1.1 for outgoing Telnet packets.
<Sysname> system-view
[Sysname] telnet client source ip 1.1.1.1
Related commands
display telnet client
telnet ipv6
Use telnet ipv6 to Telnet to a host in an IPv6 network.
Syntax
telnet ipv6 remote-host [ -i interface-type interface-number ] [ port-number ] [ source { interface interface-type interface-number | ipv6 ipv6-address } ] [ dscp dscp-value ] [ escape character ]
Views
User view
Predefined user roles
network-admin
Parameters
remote-host: Specifies the IPv6 address or host name of a remote host. A host name can be a case-insensitive string of 1 to 253 characters. Valid characters include letters, digits, hyphens (-), underscores (_), and dots (.).
-i interface-type interface-number: Specifies the interface for sending Telnet packets. This option is required when the remote host address is a link-local address. When the server address is a global unicast address, you cannot specify this option.
port-number: Specifies the TCP port number for the Telnet service on the remote host. The value range is 0 to 65535 and the default is 23.
source: Specifies a source IPv6 address or source interface for outgoing Telnet packets. If you do not specify this option, the device uses the primary IPv6 address of the output interface for the route to the server as the source address.
interface interface-type interface-number: Specifies the source interface. The primary IPv6 address of the interface will be used as the source IPv6 address for outgoing Telnet packets.
ipv6 ipv6-address: Specifies the source IPv6 address for outgoing Telnet packets.
dscp dscp-value: Specifies a DSCP value for outgoing Telnet packets. The value range is 0 to 63. The default is 48.
escape character: Specifies an escape character. You can use the escape character together with a dot (.) as the escape key to terminate the current Telnet connection and return to the upper level connection. The value for the character argument is case sensitive and must be different from the login username. As a best practice, specify a tilde (~) for the character argument.
Usage guidelines
Methods for terminating Telnet connections include:
· Pressing Ctrl+K—Terminates all Telnet connections. You can use this method in any scenarios unless you configure an escape character. After you configure an escape character, pressing Ctrl+K does not terminate Telnet connections.
· Executing the quit command—Terminates the current Telnet connection and returns to the upper level connection. This method is not available when the Telnet server reboots or fails.
· Using the escape key—Terminates the current Telnet connection and returns to the upper level connection. You can use this method in any scenarios.
To use the escape key to terminate the current Telnet connection, enter the escape character and a dot in a new line. If you enter any other characters or perform any other operations (for example, pressing the backspace key) before entering the escape character, the escape character does not take effect.
Examples
# Telnet to the host at 5000::1.
<Sysname> telnet ipv6 5000::1
# Telnet to the host at 2000::1. Use 1000::1 as the source address for outgoing Telnet packets.
<Sysname> telnet ipv6 2000::1 source ipv6 1000::1
telnet server acl
Use telnet server acl to apply an ACL to filter Telnet logins.
Use undo telnet server acl to restore the default.
Syntax
telnet server acl [ mac ] acl-number
undo telnet server acl
Default
No ACL is used to filter Telnet logins.
Views
System view
Predefined user roles
network-admin
Parameters
mac: Specifies a Layer 2 ACL. To specify an ACL of a different type, do not specify this keyword.
acl-number: Specifies an ACL by its number. If you specify the mac keyword, the value range of this argument is 4000 to 4999. If you do not specify the mac keyword, the value range of this argument is 2000 to 3999.
Usage guidelines
When no ACL is applied to the Telnet service, all users can Telnet to the device. To control Telnet logins, specify an ACL that exists and has rules so only users permitted by the ACL can Telnet to the device. If you specify an ACL that does not exist or does not have rules, no users can Telnet to the device.
For more information about ACL, see Security Configuration Guide.
If you execute this command multiple times, the most recent configuration takes effect.
This command does not take effect on existing Telnet connections.
Examples
# Permit only the user at 1.1.1.1 to Telnet to the device.
<Sysname> system-view
[Sysname] acl basic 2001
[Sysname-acl-ipv4-basic-2001] rule permit source 1.1.1.1 0
[Sysname-acl-ipv4-basic-2001] quit
[Sysname] telnet server acl 2001
telnet server acl-deny-log enable
Use telnet server acl-deny-log enable to enable logging for Telnet login attempts that are denied by the Telnet login control ACL.
Use undo telnet server acl-deny-log enable to disable logging for Telnet login attempts that are denied by the Telnet login control ACL.
Syntax
telnet server acl-deny-log enable
undo telnet server acl-deny-log enable
Default
Logging is disabled for Telnet login attempts that are denied by the Telnet login control ACL.
Views
System view
Predefined user roles
network-admin
Usage guidelines
Only clients permitted by the Telnet login control ACL can Telnet to the device. This logging feature generates log messages for Telnet login attempts that are denied by the Telnet login control ACL.
For information about log message output, see the information center in Network Management and Monitoring Configuration Guide. For information about configuring a Telnet login control ACL, see the telnet server acl or telnet server ipv6 acl command.
Examples
# Enable logging for Telnet login attempts that are denied by the Telnet login control ACL.
<Sysname> system-view
[Sysname] telnet server acl-deny-log enable
Related commands
telnet server acl
telnet server ipv6 acl
telnet server dscp
Use telnet server dscp to specify the DSCP value for IPv4 to use for Telnet packets sent to a Telnet client.
Use undo telnet server dscp to restore the default.
Syntax
telnet server dscp dscp-value
undo telnet server dscp
Default
IPv4 uses the DSCP value 48 for Telnet packets sent to a Telnet client.
Views
System view
Predefined user roles
network-admin
Parameters
dscp-value: Specifies a DSCP value in the range of 0 to 63.
Usage guidelines
The DSCP value is carried in the ToS field of an IPv4 packet to indicate the packet transmission priority.
Examples
# Set the DSCP value for IPv4 to use for outgoing Telnet packets to 30 on a Telnet server.
<Sysname> system-view
[Sysname] telnet server dscp 30
telnet server enable
Use telnet server enable to enable the Telnet server.
Use undo telnet server enable to disable the Telnet server.
Syntax
telnet server enable
undo telnet server enable
Default
The Telnet server is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
Users can Telnet to the device only when the Telnet server is enabled.
Examples
# Enable the Telnet server.
<Sysname> system-view
[Sysname] telnet server enable
telnet server ipv6 acl
Use telnet server ipv6 acl to apply an IPv6 ACL to filter IPv6 Telnet logins.
Use undo telnet server ipv6 acl to restore the default.
Syntax
telnet server ipv6 acl { ipv6 | mac } acl-number
undo telnet server ipv6 acl
Default
No IPv6 ACL is used to filter IPv6 Telnet logins.
Views
System view
Predefined user roles
network-admin
Parameters
ipv6: Specifies an IPv6 ACL.
mac: Specifies a Layer 2 ACL. To specify an ACL of a different type, do not specify this keyword.
acl-number: Specifies an ACL by its number. If you specify the ipv6 keyword, the value range of this argument is 2000 to 3999. If you specify the mac keyword, the value range of this argument is 4000 to 4999.
Usage guidelines
When no ACL is applied to the Telnet service, all users can Telnet to the device. To control Telnet logins, specify an ACL that exists and has rules so only users permitted by the ACL can Telnet to the device. If you specify an ACL that does not exist or does not have rules, no users can Telnet to the device.
For more information about ACL, see Security Configuration Guide.
If you execute this command multiple times, the most recent configuration takes effect.
This command does not take effect on existing Telnet connections.
Examples
# Permit only the user at 2000::1 to Telnet to the device.
<Sysname> system-view
[Sysname] acl ipv6 basic 2001
[Sysname-acl6-ipv6-basic-2001] rule permit source 2000::1 128
[Sysname-acl6-ipv6-basic-2001] quit
[Sysname] telnet server ipv6 acl ipv6 2001
telnet server ipv6 dscp
Use telnet server ipv6 dscp to specify the DSCP value for IPv6 to use for Telnet packets sent to a Telnet client.
Use undo telnet server ipv6 dscp to restore the default.
Syntax
telnet server ipv6 dscp dscp-value
undo telnet server ipv6 dscp
Default
IPv6 uses the DSCP value 48 for Telnet packets sent to a Telnet client.
Views
System view
Predefined user roles
network-admin
Parameters
dscp-value: Specifies a DSCP value in the range of 0 to 63.
Usage guidelines
The DSCP value is carried in the Traffic class field of an IPv6 packet to indicate the packet transmission priority.
Examples
# Set the DSCP value for IPv6 to use for outgoing Telnet packets to 30 on a Telnet server.
<Sysname> system-view
[Sysname] telnet server ipv6 dscp 30
telnet server ipv6 port
Use telnet server ipv6 port to specify the IPv6 Telnet service port number.
Use undo telnet server ipv6 port to restore the default.
Syntax
telnet server ipv6 port port-number
undo telnet server ipv6 port
Default
The IPv6 Telnet service port number is 23.
Views
System view
Predefined user roles
network-admin
Parameters
port-number: Specifies a port number. The value can be 23 or in the range of 1025 to 65535.
Usage guidelines
This command terminates all existing Telnet connections to the IPv6 Telnet server. To use the Telnet service, users must reestablish Telnet connections.
Examples
# Set the IPv6 Telnet service port number to 1026.
<Sysname> system-view
[Sysname] telnet server ipv6 port 1026
telnet server port
Use telnet server port to specify the IPv4 Telnet service port number.
Use undo telnet server port to restore the default.
Syntax
telnet server port port-number
undo telnet server port
Default
The IPv4 Telnet service port number is 23.
Views
System view
Predefined user roles
network-admin
Parameters
port-number: Specifies a port number. The value can be 23 or in the range of 1025 to 65535.
Usage guidelines
This command terminates all existing Telnet connections to the IPv4 Telnet server. To use the Telnet service, users must reestablish Telnet connections.
Examples
# Set the IPv4 Telnet service port number to 1025.
<Sysname> system-view
[Sysname] telnet server port 1025
terminal type
Use terminal type to specify the terminal display type.
Use undo terminal type to restore the default.
Syntax
terminal type { ansi | vt100 }
undo terminal type
Default
The terminal display type is ANSI.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
ansi: Specifies the ANSI type.
vt100: Specifies the VT100 type.
Usage guidelines
The device supports two terminal display types: ANSI and VT100. As a best practice, specify the VT100 type on both the device and the configuration terminal. If either side uses the ANSI type, a display problem might occur when a command line has more than 80 characters. For example, a cursor positioning error might occur.
This command is available in both user line view and user line class view. A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
A terminal display type change does not take effect on the current session. It takes effect on subsequent login sessions.
Examples
# Set the terminal display type to VT100.
<Sysname> system-view
[Sysname] line vty 0
[Sysname-line-vty0] terminal type vt100
user-interface
Use user-interface to enter one or multiple user line views.
Syntax
user-interface { first-number1 [ last-number1 ] | { console | vty } first-number2 [ last-number2 ] }
Views
System view
Predefined user roles
network-admin
Parameters
first-number1: Specifies the absolute number of the first user line, in the range of 0 to 64.
last-number1: Specifies the absolute number of the last user line, in the range of 1 to 64. This number must be greater than first-number1.
console: Specifies the console line.
vty: Specifies the VTY line.
first-number2: Specifies the relative number of the first user line. The value range is 0 for the console line and 0 to 63 for VTY lines.
last-number2: Specifies the relative number of the last user line. This argument is not supported for the console line. The value range is 1 to 63 for VTY lines. This number must be greater than first-number2.
Usage guidelines
This command is an older version reserved for backward compatibility purposes. It has the same functionality and output as the line command. As a best practice, use the line command.
To configure settings for a single user line, use this command to enter the user line view.
To configure the same settings for multiple user lines, use this command to enter multiple user line views.
Examples
# Enter the view of console line 0.
<Sysname> system-view
[Sysname] user-interface console 0
[Sysname-line-console0]
# Enter the views of VTY lines 0 to 4.
<Sysname> system-view
[Sysname] user-interface vty 0 4
[Sysname-line-vty0-4]
user-interface class
user-interface class
Use user-interface class to enter user line class view.
Syntax
user-interface class { console | vty }
Views
System view
Predefined user roles
network-admin
Parameters
console: Specifies the console line class view.
vty: Specifies the VTY line class view.
Usage guidelines
This command is an older version reserved for backward compatibility purposes. It has the same functionality and output as the line class command. As a best practice, use the line class command.
To configure the same settings for all user lines of a line class, you can use this command to enter the user line class view.
The following commands are available in user line class view:
· activation-key
· authentication-mode
· auto-execute command
· command accounting
· command authorization
· escape-key
· history-command max-size
· idle-timeout
· protocol inbound
· screen-length
· set authentication password
· shell
· terminal type
· user-role
For commands that are available in both user line view and user line class view, the device uses the following rules to determine the settings to use:
· A setting in user line view applies only to the user line. A setting in user line class view applies to all user lines of the class.
· A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
· A setting in user line class view does not take effect on current online users. It takes effect only for new login users.
Examples
# Set the CLI connection idle-timeout timer to 15 minutes in VTY line class view.
<Sysname> system-view
[Sysname] user-interface class vty
[Sysname-line-class-vty] idle-timeout 15
# In console line class view, configure character s as the terminal session activation key.
<Sysname> system-view
[Sysname] user-interface class console
[Sysname-line-class-console] activation-key s
[Sysname-line-class-console] quit
# In the view of console line 0, restore the default terminal session activation key.
[Sysname] user-interface console 0
[Sysname-line-console0] undo activation-key
Alternatively, you can use the following command:
[Sysname-line-console0] activation-key 13
To verify the configuration:
1. Exit the session on console line 0.
[Sysname-line-console0] return
<Sysname> quit
2. Log in again through the console line.
The following message appears:
Press ENTER to get started.
3. Press Enter.
Pressing Enter does not start a session.
4. Enter s.
A terminal session is started.
<Sysname>
Related commands
user-interface
user-role
Use user-role to assign a user role to a user line. The device assigns the user role to a user of the line when the user logs in.
Use undo user-role to remove a user role or restore the default.
Syntax
user-role role-name
undo user-role [ role-name ]
Default
A console user is assigned the network-admin user role. Other users are assigned the network-operator user role.
Views
User line view
User line class view
Predefined user roles
network-admin
Parameters
role-name: Specifies a user role name, a case-sensitive string of 1 to 63 characters. The user role can be user-defined or predefined. Available predefined user roles include network-admin, network-operator, and level-0 to level-15. The predefined security-audit and guest-manager user roles are not supported in user line view or user line class view. If you do not specify this argument, the undo user-role command restores the default user roles.
Usage guidelines
Only users assigned the network-admin, or level-15 user role can execute this command. Other users cannot execute this command, even if they are granted the right to execute this command.
This command is available in both user line view and user line class view. A non-default setting in either view takes precedence over a default setting in the other view. A non-default setting in user line view takes precedence over a non-default setting in user line class view.
A user role change does not take effect on the current session. It takes effect on subsequent login sessions.
You can assign up to 64 user roles to a user line.
For more information about user roles, see RBAC configuration in Fundamentals Configuration Guide.
Examples
# Assign user role network-admin to VTY line 0 to 31.
<Sysname> system-view
[Sysname] line vty 0 31
[Sysname-line-vty0-31] user-role network-admin
web captcha
Use web captcha to specify a fixed verification code for Web login.
Use undo web captcha to restore the default.
Syntax
web captcha verification-code
undo web captcha
Default
No fixed verification code is specified for Web login. A Web user must enter the verification code displayed on the login page.
Views
User view
Predefined user roles
network-admin
Parameters
verification-code: Specifies the fixed verification code, a case-sensitive 4-character string.
Usage guidelines
In test environments where a script is used for Web function tests, you can configure a fixed verification code to improve test efficiency.
For Web access security purposes, do not use this feature in production environments.
If you execute the web captcha command multiple times, the most recent configuration takes effect.
This command is not saved to the configuration file and will not take effect after a reboot.
Examples
# Set the fixed verification code to test for Web login.
<Sysname> web captcha test
web https-authorization mode
Use web https-authorization mode to set the authentication mode for HTTPS login.
Use undo web https-authorization mode to restore the default.
Syntax
web https-authorization mode { auto | manual }
undo web https-authorization mode
Default
Manual authentication mode is used for HTTPS login.
Views
System view
Predefined user roles
network-admin
Parameters
auto: Uses the PKI certificate of an HTTPS client to authenticate the client automatically.
manual: Sends the login page to the HTTPS client, and uses the username and password entered on the page to authenticate the client.
Usage guidelines
In auto authentication mode, the device uses the PKI certificate of an HTTPS client to authenticate the client automatically.
· If the certificate is valid, the value of the CN field is used as the username for AAA authentication.
¡ If the authentication succeeds, the Web interface appears on the client.
¡ If the authentication fails, the login page appears on the client. The user can log in to the Web interface after entering the correct username and password.
· If the certificate is invalid (for example, expired), the device closes the HTTPS connection.
Examples
# Set the HTTPS login authentication mode to auto.
<Sysname> system-view
[Sysname] web https-authorization mode auto
web idle-timeout
Use web idle-timeout to set the Web connection idle-timeout timer.
Use undo web idle-timeout to restore the default.
Syntax
web idle-timeout idle-time
undo web idle-timeout
Default
The Web connection idle-timeout timer is 10 minutes.
Views
System view
Predefined user roles
network-admin
Parameters
idle-time: Specifies the Web connection idle-timeout timer in minutes. The value range is 1 to 999.
Usage guidelines
The system automatically terminates a Web user connection if no mouse or keyboard operation occurs within the idle-timeout interval.
This command takes effect immediately on current Web connections.
Examples
# Set the Web connection idle-timeout timer to 100 minutes.
<Sysname> system-view
[Sysname] web idle-timeout 100
webui log enable
Use webui log enable to enable Web operation logging.
Use undo webui log enable to disable Web operation logging.
Syntax
webui log enable
undo webui log enable
Default
Web operation logging is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
When Web operation logging is enabled, the device generates log messages for important Web operations, for example, system time change. The device outputs log messages as indicated by information center settings.
A Web operation log message includes the following information:
· Module name WEB.
· Mnemonic prefix WEBOPT_.
· Web client IP address.
· Web user's username.
The following is a sample log message:
%Mar 25 14:32:38:802 2013 H3C WEB/6/WEBOPT_SET_TIME: -HostIP=192.168.100.235-User=Admin; Set the system date and time to 2013-05-27T10:00:00.
Examples
# Enable Web operation logging.
<Sysname> system-view
[Sysname] webui log enable