The first time you access the device, you can only log in to the CLI through the console port or USB port unless the device is automatically configured at startup. After login, you can change console login parameters or configure other access methods.

In login management related descriptions, it is assumed that the device does not enter the automatic configuration process at startup.

The device supports TTY lines only when it has SIC-8AS, SIC-16AS, HMIM-8ASE, or HMIM-16ASE interface cards. For information about interface card and device compatibility, see the interface card document for the device.

The device supports the FIPS mode that complies with NIST FIPS 140-2 requirements. Support for features, commands, and parameters might differ in FIPS mode and non-FIPS mode. For more information about FIPS mode, see Security Configuration Guide.

Telnet, HTTP-based Web login, and HTTP-based RESTful access are not supported in FIPS mode.

Using the console port for the first device access

About using the console port for the first device access

Console login is the fundamental login method.

Prerequisites

To log in through the console port, prepare a console terminal, for example, a PC. Make sure the console terminal has a terminal emulation program, such as HyperTerminal or PuTTY. For information about how to use terminal emulation programs, see the programs' user guides.

Procedure

1. Turn off the PC.

The serial ports on PCs do not support hot swapping. Before connecting a cable to or disconnecting a cable from a serial port on a PC, you must turn off the PC.

2. Find the console cable shipped with the device and connect the DB-9 female connector of the console cable to the serial port of the PC.

3. Identify the console port of the device carefully and connect the RJ-45 connector of the console cable to the console port.

IMPORTANT:

To connect a PC to an operating device, first connect the PC end. To disconnect a PC from an operating device, first disconnect the device end.

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Figure 1 Connecting a terminal to the console port

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4. Turn on the PC.

5. On the PC, launch the terminal emulation program, and create a connection that uses the serial port connected to the device. Set the port properties so the port properties match the following console port default settings:

¡ Bits per second—9600 bps.

¡ Flow control—None.

¡ Parity—None.

¡ Stop bits—1.

¡ Data bits—8.

6. Power on the device and press Enter as prompted.

The user view prompt appears. You can enter commands to configure or manage the device. To get help, enter a question mark (?).

Configuring CLI login

About CLI login

The device uses user lines (also called user interfaces) to manage CLI sessions and monitor user behavior. For a user line, you can configure access control settings, including the login authentication method and user roles.

User lines

User line types

The device supports the types of user lines listed in Table 1. Different user lines require different login methods.

Table 1 CLI login method and user line matrix

User line	Login method
Console line	Console port.
AUX line	AUX port, typically used for dial-in access through modems.
True type terminal (TTY) line	Asynchronous serial port, Serial port in asynchronous mode or Async port. The device uses TTY lines to manage Telnet users who use the Telnet redirect server feature to access other devices.
USB line	USB port.
Virtual type terminal (VTY) line	Telnet or SSH.

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User line numbering

A user line has an absolute number and a relative number.

An absolute number uniquely identifies a user line among all user lines. The user lines are numbered starting from 0 and incrementing by 1, in the sequence of console, TTY, AUX, VTY, and USB lines. You can use the display line command without any parameters to view supported user lines and their absolute numbers.

A relative number uniquely identifies a user line among all user lines of the same type. The number format is user line type + number. TTY lines are numbered starting from 1 and incrementing by 1. All other types of user lines are numbered starting from 0 and incrementing by 1. For example, the first VTY line is VTY 0.

User line assignment

The device assigns user lines to CLI login users depending on their login methods, as shown in Table 1. When a user logs in, the device checks the idle user lines for the login method, and assigns the lowest numbered user line to the user. For example, if VTY 0 and VTY 3 are idle when a user Telnets to the device, the device assigns VTY 0 to the user.

Each user line can be assigned only to one user at a time. If no user line is available, a CLI login attempt will be rejected.

Login authentication modes

You can configure login authentication to prevent illegal access to the device CLI.

In non-FIPS mode, the device supports the following login authentication modes:

· None—Disables authentication. This mode allows access without authentication and is insecure.

· Password—Requires password authentication. A user must provide the correct password at login.

· Scheme—Uses the AAA module to provide local or remote login authentication. A user must provide the correct username and password at login.

In FIPS mode, the device supports only the scheme authentication mode.

Different login authentication modes require different user line configurations, as shown in Table 2.

Table 2 Configuration required for different login authentication modes

Authentication mode	Configuration tasks
None	Set the authentication mode to none.
Password	1. Set the authentication mode to password. 2. Set a password.
Scheme	1. Set the authentication mode to scheme. 2. Configure login authentication methods in ISP domain view. For more information, see Security Configuration Guide.
Scheme

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User roles

A user is assigned user roles at login. The user roles control the commands available for the user. For more information about user roles, see "Configuring RBAC."

The device assigns user roles based on the login authentication mode and user type.

· In none or password authentication mode, the device assigns the user roles specified for the user line.

· In scheme authentication mode, the device uses the following rules to assign user roles:

¡ For an SSH login user who uses publickey or password-publickey authentication, the device assigns the user roles specified for the local device management user with the same name.

¡ For other users, the device assigns user roles according to the user role configuration of the AAA module. If the AAA server does not assign any user roles and the default user role feature is disabled, a remote AAA authentication user cannot log in.

FIPS compliance

Telnet login is not supported in FIPS mode.

Restrictions and guidelines: CLI login configuration

For commands that are available in both user line view and user line class view, the following rules apply:

· 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 the default setting in the other view. A non-default setting in user line view takes precedence over the non-default setting in user line class view.

· A setting in user line class view takes effect only on users who log in after the setting is made. It does not affect users who are already online when the setting is made.

Configuring console, AUX, or USB login

About console, AUX, and USB login

You can connect a terminal to the console or AUX port of the device to log in and manage the device, as shown in Figure 2 and Figure 3. For information about the login procedure, see "Using the console port for the first device access."

You can also log in to the device through the USB port by completing the following tasks:

1. Connect a bluetooth modem to the USB port of the device.

2. Use a mobile terminal to establish a connection to the bluetooth modem.

After logging in to the device, you can use the application on the mobile terminal to manage the device.

Figure 2 Logging in through the console port

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Figure 3 Logging in through the console or AUX port

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By default, console login and AUX login are both enabled. Console login does not require authentication. AUX login requires password authentication but the password is null, which allows you to log in by pressing Enter at the prompt for a password. The user role is network-admin for a console user and is network-operator for an AUX user. To improve device security, perform the following tasks immediately after you log in to the device for the first time:

· Configure password or scheme authentication for console login.

· Configure a password or configure scheme authentication for AUX login.

By default, USB login is enabled and does not require authentication. The default user role is network-admin for a USB user. To improve device security, configure password or scheme authentication for the USB line immediately after you log in to the device for the first time.

Restrictions and guidelines

A console, AUX, or USB login configuration change takes effect only for users who log in after the change is made. It does not affect users who are already online when the change is made.

In FIPS mode, the device supports only scheme authentication. You cannot disable authentication or configure password authentication.

Console, AUX, and USB login configuration tasks at a glance

To configure console, AUX, or USB login, perform the following tasks:

1. Configuring console, AUX, or USB login authentication

¡ Disabling authentication for console, AUX, or USB login

¡ Configuring password authentication for console, AUX, or USB login

¡ Configuring scheme authentication for console, AUX, or USB login

2. (Optional.) Configuring common console, AUX, or USB login settings

Configuring console, AUX, or USB login authentication

Disabling authentication for console, AUX, o r USB login

1. Enter system view.

system-view

2. Enter console/AUX/USB line view or class view.

¡ Enter console, AUX, or USB line view.

line { aux | console | usb } first-number [ last-number ]

¡ Enter console, AUX, or USB line class view.

line class { aux | console | usb }

3. Disable authentication.

authentication-mode none

By default, authentication is disabled for console login and USB login and password authentication is enabled for AUX login.

4. Assign a user role.

user-role role-name

By default, a console or USB user is assigned the network-admin user role, and an AUX user is assigned the network-operator user role.

Configuring password authentication for console , AUX, or USB login

1. Enter system view.

system-view

2. Enter console/AUX/USB line view or class view.

¡ Enter console, AUX, or USB line view.

line { aux | console | usb } first-number [ last-number ]

¡ Enter console, AUX, or USB class view.

line class { aux | console | usb }

3. Enable password authentication.

authentication-mode password

By default, authentication is disabled for console login and AUX login.

4. Set a password.

set authentication password { hash | simple } string

By default, no password is set.

5. Assign a user role.

user-role role-name

By default, a console or USB user is assigned the network-admin user role, and an AUX user is assigned the network-operator user role.

Configuring scheme authentication for console, AUX, or USB login

1. Enter system view.

system-view

2. Enter console/AUX/USB line view or class view.

¡ Enter console, AUX, or USB line view.

line { aux | console | usb } first-number [ last-number ]

¡ Enter console, AUX, or USB line class view.

line class { aux | console | usb }

3. Enable scheme authentication.

In non-FIPS mode:

authentication-mode scheme

By default, authentication is disabled for console login and USB login and password authentication is enabled for AUX login.

In FIPS mode:

authentication-mode scheme

By default, scheme authentication is enabled.

4. Configure user authentication parameters in ISP domain view.

To use local authentication, configure a local user and set the relevant attributes. To use remote authentication, configure a RADIUS, LDAP, or HWTACACS scheme. For more information, see AAA in Security Configuration Guide.

Configuring common console, AUX, or USB login settings

Restrictions and guidelines

Some common console, AUX, or USB login settings take effect immediately and can interrupt the current session. Use a login method different from console, AUX, or USB login to log in to the device before you change console, AUX, or USB login settings.

After you change console, AUX, or USB login settings, adjust the settings on the configuration terminal accordingly for a successful login.

Procedure

1. Enter system view.

system-view

2. Enter console/AUX/USB line view or class view.

¡ Enter console, AUX, or USB line view.

line { aux | console | usb } first-number [ last-number ]

¡ Enter console, AUX, or USB line class view.

line class { aux | console | usb }

3. Configure transmission parameters.

¡ Set the transmission rate.

speed speed-value

By default, the transmission rate is 9600 bps.

This command is not available in user line class view.

¡ Specify the parity mode.

parity { even | mark | none | odd | space }

By default, a user line does not use parity.

This command is not available in user line class view.

¡ Configure flow control.

flow-control { hardware | none | software }

flow-control hardware direction1 [ software direction2 ]

flow-control software direction1 [ hardware direction2 ]

By default, the device does not perform flow control.

This command is not available in user line class view.

¡ Specify the number of data bits for a character.

databits { 7 | 8 }

The default is 8.

This command is not available in user line class view.

Parameter	Description
7	Uses standard ASCII characters.
8	Uses extended ASCII characters.

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¡ Specify the number of stop bits for a character.

stopbits { 1 | 1.5 | 2 }

The default is 1.

Stop bits indicate the end of a character. The more the stop bits, the slower the transmission.

This command is not available in user line class view.

4. Configure terminal attributes.

¡ Enable the terminal service.

shell

Be default, the terminal service is enabled on all user lines.

The undo shell command is not available in AUX line view.

The undo shell command is not available in console line view.

¡ Specify the terminal display type.

terminal type { ansi | vt100 }

By default, the terminal display type is ANSI.

The device supports ANSI and VT100 terminal display types. As a best practice, specify VT100 type on both the device and the configuration terminal. You can also specify the ANSI type for both sides, but a display problem might occur if a command line has more than 80 characters.

¡ Set the maximum number of lines of command output to send to the terminal at a time.

screen-length screen-length

By default, the device sends a maximum of 24 lines to the terminal at a time.

To disable pausing between screens of output, set the value to 0.

¡ Set the size for the command history buffer.

history-command max-size value

By default, the buffer size is 10. The buffer for a user line can save a maximum of 10 history commands.

¡ Set the CLI connection idle-timeout timer.

idle-timeout minutes [ seconds ]

By default, the CLI connection idle-timeout timer is 10 minutes.

If no interaction occurs between the device and the user within the idle-timeout interval, the system automatically terminates the user connection on the user line.

If you set the timeout timer to 0, the connection will not be aged out.

5. Specify the command to be automatically executed for login users on the lines.

auto-execute command command

By default, no command is specified for auto execution.

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 available in AUX line view or AUX line class view.

This command is not available in console line view or console line class view.

6. Configure shortcut keys.

¡ Specify the terminal session activation key.

activation-key character

By default, pressing Enter starts the terminal session.

¡ Specify the escape key.

escape-key { key-string | default }

By default, pressing Ctrl+C terminates a command.

¡ Set the user line locking key.

lock-key key-string

By default, no user line locking key is set.

Configuring Telnet login

About Telnet login

The device can act as a Telnet server to allow Telnet login, or as a Telnet client to Telnet to other devices.

Restrictions and guidelines

Telnet login is not supported in FIPS mode. For more information about FIPS mode, see Security Configuration Guide.

A Telnet login configuration change takes effect only for users who log in after the change is made. It does not affect users who are already online when the change is made.

Configuring the device as a Telnet server

Telnet server configuration tasks at a glance

To configure the device as a Telnet server, perform the following tasks:

1. Enabling the Telnet server

2. Configuring Telnet login authentication

¡ Disabling authentication for Telnet login

¡ Configuring password authentication for Telnet login

¡ Configuring scheme authentication for Telnet login

3. (Optional.) Configuring common Telnet server settings

4. (Optional.) Configuring common VTY line settings

Enabling the Telnet server

1. Enter system view.

system-view

2. Enable the Telnet server.

telnet server enable

By default, the Telnet server is disabled.

Disabling authentication for Telnet login

1. Enter system view.

system-view

2. Enter VTY line view or class view.

¡ Enter VTY line view.

line vty first-number [ last-number ]

¡ Enter VTY line class view.

line class vty

3. Disable authentication.

authentication-mode none

By default, password authentication is enabled for Telnet login.

In VTY line view, this command is associated with the protocol inbound command. If one command has a non-default setting in VTY line view, the other command uses its setting in VTY line view, regardless of its setting in VTY line class view.

4. (Optional.) Assign a user role.

user-role role-name

By default, a VTY line user is assigned the network-operator user role.

Configuring password authentication for Telnet login

1. Enter system view.

system-view

2. Enter VTY line view or class view.

¡ Enter VTY line view.

line vty first-number [ last-number ]

¡ Enter VTY line class view.

line class vty

3. Enable password authentication.

authentication-mode password

By default, password authentication is enabled for Telnet login.

4. Set a password.

set authentication password { hash | simple } password

By default, no password is set.

5. (Optional.) Assign a user role.

user-role role-name

By default, a VTY line user is assigned the network-operator user role.

Configuring scheme authentication for Telnet login

1. Enter system view.

system-view

2. Enter VTY line view or class view.

¡ Enter VTY line view.

line vty first-number [ last-number ]

¡ Enter VTY line class view.

line class vty

3. Enable scheme authentication.

authentication-mode scheme

By default, password authentication is enabled for Telnet login.

4. Configure user authentication parameters in ISP domain view.

To use local authentication, configure a local user and set the relevant attributes.

To use remote authentication, configure a RADIUS, LDAP, or HWTACACS scheme. For more information, see AAA in Security Configuration Guide.

Configuring common Telnet server settings

1. Enter system view.

system-view

2. Set the DSCP value for outgoing Telnet packets.

IPv4:

telnet server dscp dscp-value

IPv6:

telnet server ipv6 dscp dscp-value

By default, the DSCP value is 48.

3. Specify the Telnet service port number.

IPv4:

telnet server port port-number

IPv6:

telnet server ipv6 port port-number

By default, the Telnet service port number is 23.

4. Set the maximum number of concurrent Telnet users.

aaa session-limit telnet max-sessions

By default, the maximum number of concurrent Telnet users is 32.

Changing this setting does not affect users who are currently online. If the new limit is less than the number of online Telnet users, no additional users can Telnet in until the number drops below the new limit.

For more information about this command, see Security Command Reference.

Configuring common VTY line settings

1. Enter system view.

system-view

2. Enter VTY line view or class view.

¡ Enter VTY line view.

line vty first-number [ last-number ]

¡ Enter VTY line class view.

line class vty

3. Configure VTY terminal attributes.

¡ Enable the terminal service.

shell

By default, the terminal service is enabled on all user lines.

¡ Specify the terminal display type.

terminal type { ansi | vt100 }

By default, the terminal display type is ANSI.

¡ Set the maximum number of lines of command output to send to the terminal at a time.

screen-length screen-length

By default, the device sends a maximum of 24 lines to the terminal at a time.

To disable pausing between screens of output, set the value to 0.

¡ Set the size for the command history buffer.

history-command max-size value

By default, the buffer size is 10. The buffer for a user line can save a maximum of 10 history commands.

¡ Set the CLI connection idle-timeout timer.

idle-timeout minutes [ seconds ]

By default, the CLI connection idle-timeout timer is 10 minutes.

If no interaction occurs between the device and the user within the idle-timeout interval, the system automatically terminates the user connection on the user line.

If you set the timeout timer to 0, the connection will not be aged out.

4. Specify the supported protocols.

protocol inbound { all | pad | ssh | telnet }

By default, Telnet and SSH are supported.

A protocol change takes effect only on users who log in after the setting is made. It does not affect users who are already online when the setting is made.

In VTY line view, this command is associated with the authentication-mode command. If one command has a non-default setting in VTY line view, the other command uses its setting in VTY line view, regardless of its setting in VTY line class view.

5. Specify the command to be automatically executed for login users on the user lines.

auto-execute command command

By default, no command is specified for auto execution.

IMPORTANT:

Before you configure this command and save the configuration, make sure you can access the CLI to modify the configuration through other VTY lines or AUX lines.

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For a VTY line, you can specify a command that is to be automatically executed when a user logs in. After executing the specified command, the system automatically disconnects the Telnet session.

6. Configure shortcut keys.

¡ Specify the shortcut key for terminating a task.

escape-key { character | default }

The default setting is Ctrl+C.

¡ Set the user line locking key.

lock-key key-string

By default, no user line locking key is set.

Using the device to log in to a Telnet server

About using the device to log in to a Telnet server

You can use the device as a Telnet client to log in to a Telnet server.

Figure 4 Telnetting from the device to a Telnet server

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Prerequisites

Assign an IP address to the device and obtain the IP address of the Telnet server. If the device resides on a different subnet than the Telnet server, make sure the device and the Telnet server can reach each other.

Procedure

1. Enter system view.

system-view

2. (Optional.) Specify the source IPv4 address or source interface for outgoing Telnet packets.

telnet client source { interface interface-type interface-number | ip ip-address }

By default, no source IPv4 address or source interface is specified. The device uses the primary IPv4 address of the output interface as the source address for outgoing Telnet packets.

3. Exit to user view.

quit

4. Use the device to log in to a Telnet server.

IPv4:

telnet remote-host [ service-port ] [ vpn-instance vpn-instance-name ] [ source { interface interface-type interface-number | ip ip-address } ] [ dscp dscp-value ] [ escape character ]

IPv6:

telnet ipv6 remote-host [ -i interface-type interface-number ] [ port-number ] [ vpn-instance vpn-instance-name ] [ source { interface interface-type interface-number | ipv6 ipv6-address } ] [ dscp dscp-value ] [ escape character ]

Configuring SSH login

About SSH login

SSH offers a secure remote login method. By providing encryption and strong authentication, it protects devices against attacks such as IP spoofing and plaintext password interception. For more information, see Security Configuration Guide.

The device can act as an SSH server to allow Telnet login, or as an SSH client to log in to an SSH server.

Configuring the device as an SSH server

About SSH server configuration procedure

This section provides the SSH server configuration procedure used when the SSH client authentication method is password. For more information about SSH and publickey authentication configuration, see Security Configuration Guide.

Procedure

1. Enter system view.

system-view

2. Create local key pairs.

In non-FIPS mode:

public-key local create { dsa | ecdsa secp256r1 | rsa }

In FIPS mode:

public-key local create { ecdsa secp256r1 | rsa }

3. Enable the SSH server.

ssh server enable

By default, the SSH server is disabled.

4. (Optional.) Create an SSH user and specify the authentication mode.

ssh user username service-type stelnet authentication-type password

5. Enter VTY line view or class view.

¡ Enter VTY line view.

line vty first-number [ last-number ]

¡ Enter VTY line class view.

line class vty

6. Enable scheme authentication.

In non-FIPS mode:

authentication-mode scheme

By default, password authentication is enabled for VTY lines.

In FIPS mode:

authentication-mode scheme

By default, scheme authentication is enabled for VTY lines.

7. (Optional.) Specify the protocols for the user lines to support.

In non-FIPS mode:

protocol inbound { all | pad | ssh | telnet }

By default, Telnet and SSH are supported.

A protocol change takes effect only on users who log in after the setting is made. It does not affect users who are already online when the setting is made.

In FIPS mode:

protocol inbound ssh

By default, SSH is supported.

A protocol change takes effect only on users who log in after the setting is made. It does not affect users who are already online when the setting is made.

8. (Optional.) Set the maximum number of concurrent SSH users.

aaa session-limit ssh max-sessions

By default, the maximum number of concurrent SSH users is 32.

Changing this setting does not affect users who are currently online. If the new limit is less than the number of online SSH users, no additional SSH users can log in until the number drops below the new limit.

For more information about this command, see Security Command Reference.

9. (Optional.) Configure common settings for VTY lines:

a. Exit to system view.

quit

b. Configure common settings for VTY lines.

See "Configuring common VTY line settings."

Using the device to log in to an SSH server

About using the device to log in to an SSH server

You can use the device as an SSH client to log in to an SSH server.

Figure 5 Logging in to an SSH server from the device

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Prerequisites

Assign an IP address to the device and obtain the IP address of the SSH server. If the device resides on a different subnet than the SSH server, make sure the device and the SSH server can reach each other.

Procedure

To use the device to log in to an SSH server, execute one of the following commands in user view:

IPv4:

ssh2 server

IPv6:

ssh2 ipv6 server

To work with the SSH server, you might need to specify a set of parameters. For more information, see Security Configuration Guide.

Configuring the device as a Telnet redirect server

About Telnet redirect

When the device acts as a Telnet redirect server, users can Telnet to and manage other devices without knowing the devices' IP addresses, as shown in Figure 6.

For example, a user can use the following procedure to Telnet to Device C:

1. Run a terminal emulation program on the PC and create a connection to Device C.

2. Enter 192.168.100.240 as the IP address and 6067 as the port number. Select the TCP/IP connection mode.

3. When the login prompt appears on the terminal, press Enter to enter user view.

Figure 6 Telnetting to devices through a redirect server

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Restrictions and guidelines

A destination device can be connected to an AUX port of the redirect server, which can be an asynchronous port or a serial port in asynchronous mode.

For a destination device that uses its AUX port to connect to the redirect server, you must complete the following tasks if login authentication is required:

· Log in to the destination device through its console port.

· Configure login authentication and specify user roles and common attributes for AUX lines.

· Connect the AUX port of the destination device to the redirect server.

The device can redirect only one Telnet connection at a time.

Configuring Telnet redirect

1. Enter system view.

system-view

2. Enter synchronous or asynchronous serial interface view or asynchronous interface view.

¡ Enter serial interface view and configure the interface to operate in asynchronous mode.

interface serial interface-number

physical-mode async

By default, a serial interface operates in synchronous mode.

¡ Enter asynchronous interface view.

interface async interface-number

An adapter is required to connect the interface to the destination device.

3. Configure interface attributes.

¡ Set the operating mode to flow mode.

async-mode flow

By default, an asynchronous serial interface operates in protocol mode.

¡ (Optional.) Disable level detection.

undo detect dsr-dtr

By default, level detection is enabled.

Whether this command is required depends on the destination device.

4. Exit to system view.

quit

5. Enter AUX or TTY line view.

line { first-number1 [ last-number1 ] | { aux | tty } first-number2 [ last-number2 ] }

6. Configure user line attributes.

¡ Set the transmission rate.

speed speed-value

By default, the transmission rate is 9600 bps.

The user line must use the same transmission rate as the destination device.

¡ Specify the number of stop bits.

stopbits { 1 | 1.5 | 2 }

By default, the number of stop bits is 1.

The user line must use the same number of stop bits as the destination device.

7. Enable Telnet redirect.

redirect enable

By default, Telnet redirect is disabled.

8. Disable the terminal service.

undo shell

By default, the terminal service is enabled on all user lines.

9. (Optional.) Configure redirect parameters.

¡ Specify a Telnet redirect listening port.

redirect listen-port port-number

By default, the listening port number is the absolute user line number plus 2000.

¡ Set the idle-timeout timer for the redirected connection.

redirect timeout time

The default idle-timeout timer is 360 seconds.

10. (Optional.) Enable the passthrough packet redirect mode.

redirect passthrough

By default, the Telnet redirect server processes packets as dictated by the standard Telnet protocol before sending the packets to the destination device.

Configure this command if the Telnet user and destination device are not using the standard Telnet protocol. In passthrough mode, the Telnet redirect server forwards packets without processing the packets.

11. (Optional.) Disable Telnet option negotiation for the redirected connection.

redirect refuse-negotiation

By default, Telnet option negotiation is enabled for the redirected connection.

Configure this command if the destination device does not require a Telnet option negotiation.

Associating the Telnet redirect listening port with an IP address

1. Enter system view.

system-view

2. (Optional.) Associate the Telnet redirect listening port with an IP address.

ip alias ip-address port-number

By default, a Telnet redirect listening port is not associated with an IP address.

Terminating a redirected Telnet connection

1. Enter AUX or TTY line view.

line { first-number1 [ last-number1 ] | { aux | tty } first-number2 [ last-number2 ] }

2. Manually terminate the redirected Telnet connection.

redirect disconnect

Display and maintenance commands for CLI login

Execute display commands in any view.

Task	Command	Remarks
Display user line information.	display line [ num1 \| { aux \| console \| tty \| usb \| vty } num2 ] [ summary ]	N/A
Display the packet source setting for the Telnet client.	display telnet client	N/A
Display online CLI users.	display users [ all ]	N/A
Release a user line.	free line { num1 \| { aux \| console \| tty \| usb \| vty } num2 }	Multiple users can log in to the device to simultaneously configure the device. When necessary, you can execute this command to release some connections. You cannot use this command to release the connection you are using. This command is available in user view.
Lock the current user line and set the password for unlocking the line.	lock	By default, the system does not lock any user lines. This command is not supported in FIPS mode. This command is available in user view.
Lock the current user line and enable unlocking authentication.	lock reauthentication	By default, the system does not lock any user lines or initiate reauthentication. To unlock the locked user line, you must press Enter and provide the login password to pass reauthentication. This command is available in any view.
Send messages to user lines.	send { all \| num1 \| { aux \| console \| tty \| usb \| vty } num2 }	This command is available in user view.

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Configuring Web login

About Web login

The device provides a built-in Web server that supports HTTP 1.0, HTTP 1.1, and HTTPS. You can use a Web browser to log in to and configure the device.

HTTPS uses SSL to ensure the integrity and security of data exchanged between the client and the server, and is more secure than HTTP. You can define a certificate-based access control policy to allow only legal clients to access the Web interface.

FIPS compliance

HTTP is not supported in FIPS mode.

Restrictions and guidelines: Web login configuration

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.

Web login configuration tasks at a glance

To configure Web login, perform the following tasks:

1. Configuring Web login

¡ Configuring HTTP login

¡ Configuring HTTPS login

2. Configuring a Web login local user

3. Managing Web connections

4. Enabling Web operation logging

Prerequisites for Web login

Before logging in to the Web interface of the device, log in to the device by using any other method and assign an IP address to the device. Make sure the configuration terminal and the device can communicate over the IP network.

Configuring HTTP login

1. (Optional.) Specify a fixed verification code for Web login.

web captcha verification-code

By default, no fixed verification code is specified. A Web user must enter the verification code displayed on the login page at login.

Execute this command in user view.

2. Enter system view.

system-view

3. Enable the HTTP service.

ip http enable

By default, the HTTP service is disabled.

4. (Optional.) Specify the HTTP service port number.

ip http port port-number

The default HTTP service port number is 80.

5. (Optional.) Specify the HTTP methods to be added to the reply to an OPTIONS request.

http method { delete | get | head | options | post | put } *

By default, no HTTP methods are specified.

Configuring HTTPS login

About HTTPS login

The device supports the following HTTPS login modes:

· Simplified mode—The device uses a self-signed certificate (a certificate that is generated and signed by the device itself) and the default SSL settings. The device operates in simplified mode after you enable HTTPS service on the device.

· Secure mode—The device uses a certificate signed by a CA and a set of user-defined security protection settings to ensure security. For the device to operate in secure mode, you must perform the following tasks:

¡ Enable HTTPS service on the device.

¡ Specify an SSL server policy for the service.

¡ Configure PKI domain-related parameters.

Simplified mode is easy to configure but it is insecure. Secure mode is secure but it is complicated to configure.

For more information about SSL and PKI, see Security Configuration Guide.

Restrictions and guidelines

· If the HTTPS service and the SSL VPN service use the same port number, they must use the same SSL server policy. If they use different SSL server policies, only one of them can be enabled.

To modify the SSL server policy used by both the HTTPS service and the SSL VPN service, you must perform the following tasks:

¡ Disable the two services before you modify the SSL server policy.

¡ Enable the two services again after the modification.

If you fail to complete the required tasks, the new settings do not take effect.

· To associate a different SSL server policy with the HTTPS service, you must perform the following tasks:

¡ Disable the HTTP service and HTTPS service before you associate the new SSL server policy.

¡ Enable the HTTP service and HTTPS service again after the association.

If you fail to complete the required tasks, the new SSL server policy does not take effect.

· For the HTTP service to use its self-signed certificate after you associate an SSL server policy with the HTTPS service, you must follow these steps:

a. Disable the HTTP service and HTTPS service.

b. Execute the undo ip https ssl-server-policy command to remove the existing SSL server policy association.

c. Enable the HTTP service and HTTPS service again.

· 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 the ip https enable command again until the HTTPS service is enabled.

· To use a certificate-based access control policy to control HTTPS access, you must perform the following tasks:

¡ Configure the client-verify enable command in the SSL server policy that is associated with the HTTPS service.

¡ Configure a minimum of one permit rule in the certificate-based access control policy.

If you fail to complete the required tasks, HTTPS clients cannot log in.

Procedure

1. (Optional.) Specify a fixed verification code for Web login.

web captcha verification-code

By default, no fixed verification code is configured. A Web user must enter the verification code displayed on the login page at login.

2. Enter system view.

system-view

3. (Optional.) Apply policies to the HTTPS service.

¡ Apply an SSL server policy.

ip https ssl-server-policy policy-name

By default, no SSL server policy is associated. The HTTP service uses a self-signed certificate.

¡ Apply a certificate-based access control policy to control HTTPS access.

ip https certificate access-control-policy policy-name

By default, no certificate-based access control policy is applied.

For more information about certificate-based access control policies, see PKI in Security Configuration Guide.

4. Enable the HTTPS service.

ip https enable

By default, the HTTPS service is disabled.

5. (Optional.) Specify the HTTPS service port number.

ip https port port-number

The default HTTPS service port number is 443.

6. (Optional.) Set the HTTPS login authentication mode.

web https-authorization mode { auto | manual }

By default, manual authentication mode is used for HTTPS login.

Configuring a Web login local user

1. Enter system view.

system-view

2. Create a local user and enter local user view.

local-user user-name [ class manage ]

3. (Optional.) Configure a password for the local user.

In non-FIPS mode:

password [ { hash | simple } password ]

By default, no password is configured for a local user. The local user can pass authentication after entering the correct username and passing attribute checks.

In FIPS mode:

password

By default, no password is configured for a local user. The local user cannot pass authentication.

4. Configure user attributes.

¡ Assign a user role to the local user.

authorization-attribute user-role user-role

The default user role is network-operator for a Web user.

¡ Specify the service type for the local user.

service-type { http | https }

By default, no service type is specified for a local user.

Managing Web connections

Setting the Web connection idle-timeout timer

1. Enter system view.

system-view

2. Set the Web connection idle-timeout timer.

web idle-timeout minutes

By default, the Web connection idle-timeout timer is 10 minutes.

Specifying the maximum number of online HTTP or HTTPS users

1. Enter system view.

system-view

2. Specify the maximum number of online HTTP or HTTPS users.

aaa session-limit { http | https } max-sessions

By default, the device supports a maximum number of 32 online HTTP users and 32 online HTTPS users.

Changing this setting does not affect users who are currently online. If the new setting is less than the number of online HTTP or HTTPS users, no additional HTTP or HTTPS users can log in until the number drops below the new limit. For more information about this command, see Security Command Reference.

Logging off Web users

To log off Web users, execute the following command in user view:

free web users { all | user-id user-id | user-name user-name }

Enabling Web operation logging

1. Enter system view.

system-view

2. Enable Web operation logging.

webui log enable

By default, Web operation logging is disabled.

Display and maintenance commands for Web login

Execute display commands in any view and the free web users command in user view.

Task	Command
Display HTTP service configuration and status information.	display ip http
Display HTTPS service configuration and status information.	display ip https
Display Web interface navigation tree information.	display web menu [ chinese ]
Display online Web users.	display web users
Log off online Web users.	free web users { all \| user-id user-id \| user-name user-name }

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Web login configuration examples

Example: Configuring HTTP login

Network configuration

As shown in Figure 7, the PC and the device can communicate over the IP network.

Configure the device to allow the PC to log in by using HTTP.

Figure 7 Network diagram

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Procedure

# Create a local user named admin. Set the password to admin, the service type to HTTP, and the user role to network-admin.

[Sysname] local-user admin

[Sysname-luser-manage-admin] service-type http

[Sysname-luser-manage-admin] authorization-attribute user-role network-admin

[Sysname-luser-manage-admin] password simple admin

[Sysname-luser-manage-admin] quit

# Enable HTTP.

[Sysname] ip http enable

Verifying the configuration

1. On the PC, run a Web browser and enter the IP address of the device in the address bar.

2. On the login page, enter the username, password, and verification code. Select English and click Login.

After you pass authentication, the homepage appears and you can configure the device.

Example: Configuring HTTPS login

Network configuration

As shown in Figure 8, the host, device, and CA can communicate over the IP network.

Perform the following tasks to allow only authorized users to access the device's Web interface:

· Configure the device as the HTTPS server and request a certificate for the device.

· Configure the host as the HTTPS client and request a certificate for the host.

Figure 8 Network diagram

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Procedure

In this example, the CA runs Windows Server and has the SCEP add-on installed.

1. Configure the device (HTTPS server):

# Create PKI entity en and set entity parameters.

<Device> system-view

[Device] pki entity en

[Device-pki-entity-en] common-name http-server1

[Device-pki-entity-en] fqdn ssl.security.com

[Device-pki-entity-en] quit

# Create PKI domain 1 and set domain parameters.

[Device] pki domain 1

[Device-pki-domain-1] ca identifier new-ca

[Device-pki-domain-1] certificate request url http://10.1.2.2/certsrv/mscep/mscep.dll

[Device-pki-domain-1] certificate request from ra

[Device-pki-domain-1] certificate request entity en

# Configure the PKI domain to use the 1024-bit long RSA key pair hostkey for both signing and encryption.

[Device-pki-domain-1] public-key rsa general name hostkey length 1024

[Device-pki-domain-1] quit

# Create RSA local key pairs.

[Device] public-key local create rsa

# Retrieve the CA certificate.

[Device] pki retrieve-certificate domain 1 ca

# Configure the device to request a local certificate through SCEP.

[Device] pki request-certificate domain 1

# Create SSL server policy myssl. Specify PKI domain 1 for the SSL server policy, and enable certificate-based SSL client authentication.

[Device] ssl server-policy myssl

[Device-ssl-server-policy-myssl] pki-domain 1

[Device-ssl-server-policy-myssl] client-verify enable

[Device-ssl-server-policy-myssl] quit

# Create certificate attribute group mygroup1. Configure a certificate attribute rule that matches statements with the new-ca string in the distinguished name of the subject name.

[Device] pki certificate attribute-group mygroup1

[Device-pki-cert-attribute-group-mygroup1] attribute 1 issuer-name dn ctn new-ca

[Device-pki-cert-attribute-group-mygroup1] quit

# Create certificate-based access control policy myacp. Configure a certificate access control rule that uses the matching criteria in certificate attribute group mygroup1.

[Device] pki certificate access-control-policy myacp

[Device-pki-cert-acp-myacp] rule 1 permit mygroup1

[Device-pki-cert-acp-myacp] quit

# Associate SSL server policy myssl with the HTTPS service.

[Device] ip https ssl-server-policy myssl

# Use certificate-based access control policy myacp to control HTTPS access.

[Device] ip https certificate access-control-policy myacp

# Enable the HTTPS service.

[Device] ip https enable

# Create local user usera. Set the password to 123, the service type to HTTPS, and the user role to network-admin.

[Device] local-user usera

[Device-luser-usera] password simple 123

[Device-luser-usera] service-type https

[Device-luser-usera] authorization-attribute user-role network-admin

2. Configure the host (HTTPS client):

# On the host, run a Web browser and enter http://10.1.2.2/certsrv in the address bar.

# Request a certificate for the host as prompted.

Verifying the configuration

1. On the host, enter https://10.1.1.1 in the Web browser's address bar, and select the certificate issued by new-ca.

2. When the Web login page appears, enter the username usera and password 123 to log in to the Web interface.

For more information about PKI and SSL configuration commands and the public-key local create rsa command, see Security Command Reference.

Accessing the device through SNMP

You can run SNMP on an NMS to access the device MIB and perform Get and Set operations to configure and manage the device.

Figure 9 SNMP access diagram

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For more information about SNMP, see Network Management and Monitoring Configuration Guide.

Configuring RESTful access

About RESTful access

The device provides the Representational State Transfer application programming interface (RESTful API). Based on this API, you can use programming languages such as Python, Ruby, or Java to write programs to perform the following tasks:

· Send RESTful requests to the device to pass authentication.

· Use RESTful API operations to configure and manage the device. RESTful API operations include Get, Put, Post, and Delete.

The device supports using HTTP or HTTPS to transfer RESTful packets.

FIPS compliance

RESTful access over HTTP is not supported in FIPS mode.

Configuring RESTful access over HTTP

1. Enter system view.

system-view

2. Enable RESTful access over HTTP.

restful http enable

By default, RESTful access over HTTP is disabled.

3. Create a local user and enter local user view.

local-user user-name [ class manage ]

4. Configure a password for the local user.

password [ { hash | simple } password ]

5. (Optional.) Assign a user role to the local user.

authorization-attribute user-role user-role

The default user role is network-operator for a RESTful access user.

6. Specify the HTTP service for the local user.

service-type http

By default, no service type is specified for a local user.

Configuring RESTful access over HTTPS

1. Enter system view.

system-view

2. Enable RESTful access over HTTPS.

restful https enable

By default, RESTful access over HTTPS is disabled.

3. Create a local user and enter local user view.

local-user user-name [ class manage ]

4. Configure a password for the local user.

In non-FIPS mode:

password [ { hash | simple } password ]

In FIPS mode:

password

5. (Optional.) Assign a user role to the local user.

authorization-attribute user-role user-role

The default user role is network-operator for a RESTful access user.

6. Specify the HTTPS service for the local user.

service-type https

By default, no service type is specified for a local user.

Controlling user access to the device

About login user access control

Use ACLs to prevent unauthorized access, and configure command authorization and accounting to monitor and control user behavior.

To control user access, specify an ACL that exists and has rules so only users permitted by the ACL can access the device.

· If no ACL is applied, all users can access the device.

· If the ACL for Web user access control does not exist or does not have rules, all Web users can access the device.

· If the ACL for Telnet, SSH, or SNMP access control does not exist or does not have rules, no Telnet, SSH, or SNMP users can access the device.

For more information about ACLs, see ACL and QoS Configuration Guide.

FIPS compliance

Telnet and HTTP are not supported in FIPS mode.

Controlling Telnet and SSH logins

Controlling Telnet logins

1. Enter system view.

system-view

2. Apply an ACL to control Telnet logins.

IPv4:

telnet server acl [ mac ] acl-number

IPv6:

telnet server ipv6 acl { ipv6 | mac } acl-number

By default, no ACL is used to control Telnet logins.

3. (Optional.) Enable logging for Telnet login attempts that are denied by the Telnet login control ACL.

telnet server acl-deny-log enable

By default, logging is disabled for Telnet login attempts that are denied by the Telnet login control ACL.

Controlling SSH logins

1. Enter system view.

system-view

2. Apply an ACL to control SSH logins.

IPv4:

ssh server acl { advanced-acl-number | basic-acl-number | mac mac-acl-number }

IPv6:

ssh server ipv6 acl { ipv6 { advanced-acl-number | basic-acl-number } | mac mac-acl-number }

By default, no ACL is used to control SSH logins.

3. (Optional.) Enable logging for SSH login attempts that are denied by the SSH login control ACL.

ssh server acl-deny-log enable

By default, logging is disabled for SSH login attempts that are denied by the SSH login control ACL.

For more information about ssh commands, see SSH in Security Command Reference.

Example: Controlling Telnet login

Network configuration

As shown in Figure 10, the device is a Telnet server.

Configure the device to permit only Telnet packets sourced from Host A and Host B.

Figure 10 Network diagram

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Procedure

# Configure an ACL to permit packets sourced from Host A and Host B.

<Sysname> system-view

[Sysname] acl basic 2000 match-order config

[Sysname-acl-ipv4-basic-2000] rule 1 permit source 10.110.100.52 0

[Sysname-acl-ipv4-basic-2000] rule 2 permit source 10.110.100.46 0

[Sysname-acl-ipv4-basic-2000] quit

# Apply the ACL to filter Telnet logins.

[Sysname] telnet server acl 2000

Controlling Web logins

Configuring source IP-based Web login control

1. Enter system view.

system-view

2. Apply a basic ACL to control Web logins.

¡ Control HTTP logins.

ip http acl [ advanced | mac ] { acl-number | name acl-name }

¡ Control HTTPS logins.

ip https acl [ advanced | mac ] {acl-number | name acl-name }

By default, no ACL is applied to control Web logins.

Example: Controlling Web login

Network configuration

As shown in Figure 11, the device is an HTTP server.

Configure the device to provide HTTP service only to Host B.

Figure 11 Network diagram

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Procedure

# Create an ACL and configure rule 1 to permit packets sourced from Host B.

<Sysname> system-view

[Sysname] acl basic 2030 match-order config

[Sysname-acl-ipv4-basic-2030] rule 1 permit source 10.110.100.52 0

# Apply the ACL to the HTTP service so only a Web user on Host B can access the device.

[Sysname] ip http acl 2030

Verifying the configuration

# Log in to HTTP server 10.110.110.66 from Host B.

1. On Host B, launch the Web browser and enter http://10.110.110.66 in the address bar.

2. Enter the username and password. Click Login.

After you pass authentication, the homepage appears and you can configure the device.

# Log in to HTTP server 10.110.110.66 from Host A.

3. On Host A, launch the Web browser and enter http://10.110.110.66 in the address bar.

4. Enter the username and password. Click Login.

You cannot pass authentication.

Controlling SNMP access

About SNMP access control

For information about SNMP access control, see SNMP in Network Management and Monitoring Configuration Guide.

Example: Controlling SNMP access

Network configuration

As shown in Figure 12, the device is running SNMP.

Configure the device to allow Host A and Host B to access the device through SNMP.

Figure 12 Network diagram

Network diagram

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Procedure

# Create an ACL to permit packets sourced from Host A and Host B.

<Sysname> system-view

[Sysname] acl basic 2000 match-order config

[Sysname-acl-ipv4-basic-2000] rule 1 permit source 10.110.100.52 0

[Sysname-acl-ipv4-basic-2000] rule 2 permit source 10.110.100.46 0

[Sysname-acl-ipv4-basic-2000] quit

# Associate the ACL with the SNMP community and the SNMP group.

[Sysname] snmp-agent community read aaa acl 2000

[Sysname] snmp-agent group v2c groupa acl 2000

[Sysname] snmp-agent usm-user v2c usera groupa acl 2000

Verifying the configuration

# Access the device from the NMS at 10.110.100.52 or 10.110.100.46. You can access the device. (Details not shown.)

# Access the device from any other NMS. You cannot access the device. (Details not shown.)

Configuring command authorization

About command authorization

By default, commands available for a user depend only on the user's user roles. When the authentication mode is scheme, you can configure the command authorization feature to further control access to commands.

After you enable command authorization, a user can use only commands that are permitted by both the AAA scheme and user roles.

Restrictions and guidelines

The command authorization method can be different from the user login authorization method.

To make the command authorization feature take effect, you must configure a command authorization method in ISP domain view. For more information, see AAA in Security Configuration Guide.

Procedure

1. Enter system view.

system-view

2. Enter user line view or user line class view.

¡ Enter user line view.

line { first-number1 [ last-number1 ] | { aux | console | tty | usb | vty } first-number2 [ last-number2 ] }

¡ Enter user line class view.

line class { aux | console | tty | usb | vty }

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 the default setting in the other view. A non-default setting in user line view takes precedence over the non-default setting in user line class view.

A setting in user line class view takes effect only on users who log in after the setting is made. It does not affect users who are already online when the setting is made.

3. Enable scheme authentication.

In non-FIPS mode:

authentication-mode scheme

By default, authentication is disabled for console login and TTY login, and password authentication is enabled for AUX login and VTY login.

In FIPS mode:

authentication-mode scheme

By default, scheme authentication is enabled.

4. Enable command authorization.

command authorization

By default, command authorization is disabled, and the commands available for a user only depend on the user role.

If the command authorization command is configured in user line class view, command authorization is enabled on all user lines in the class. You cannot configure the undo command authorization command in the view of a user line in the class.

Example: Configuring command authorization

Network configuration

As shown in Figure 13, Host A needs to log in to the device to manage the device.

Configure the device to perform the following operations:

· Allow Host A to Telnet in after authentication.

· Use the HWTACACS server to control the commands that the user can execute.

· If the HWTACACS server is not available, use local authorization.

Network diagram

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Procedure

Figure 13 Network diagram

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Procedure

# Assign IP addresses to relevant interfaces. Make sure the device and the HWTACACS server can reach each other. Make sure the device and Host A can reach each other.

# Enable the Telnet server.

<Device> system-view

[Device] telnet server enable

# Enable scheme authentication for user lines VTY 0 through VTY 63.

[Device] line vty 0 63

[Device-line-vty0-63] authentication-mode scheme

# Enable command authorization for the user lines.

[Device-line-vty0-63] command authorization

[Device-line-vty0-63] quit

# Create HWTACACS scheme tac.

[Device] hwtacacs scheme tac

# Configure the scheme to use the HWTACACS server at 192.168.2.20:49 for authentication and authorization.

[Device-hwtacacs-tac] primary authentication 192.168.2.20 49

[Device-hwtacacs-tac] primary authorization 192.168.2.20 49

# Set the shared keys to expert.

[Device-hwtacacs-tac] key authentication simple expert

[Device-hwtacacs-tac] key authorization simple expert

# Remove domain names from usernames sent to the HWTACACS server.

[Device-hwtacacs-tac] user-name-format without-domain

[Device-hwtacacs-tac] quit

# Configure the system-defined domain (system).

[Device] domain system

# Use HWTACACS scheme tac for login user authentication and command authorization. Use local authentication and local authorization as the backup method.

[Device-isp-system] authentication login hwtacacs-scheme tac local

[Device-isp-system] authorization command hwtacacs-scheme tac local

[Device-isp-system] quit

# Create local user monitor. Set the simple password to 123, the service type to Telnet, and the default user role to level-1.

[Device] local-user monitor

[Device-luser-manage-monitor] password simple 123

[Device-luser-manage-monitor] service-type telnet

[Device-luser-manage-monitor] authorization-attribute user-role level-1

Verifying the configuration

# Telnet to the device (10.110.100.77) from Host A. After login, execute the stp enable command. Because you are not authorized to execute the command, the system displays Permission denied.

C:\> telnet 10.110.100.77

Trying 10.110.100.77 ...

Press CTRL+K to abort

Connected to 10.110.100.77 ...

******************************************************************************

* Without the owner's prior written consent, *

* no decompiling or reverse-engineering shall be allowed. *

******************************************************************************

Password:

<Device> system-view

System View: return to User View with Ctrl+Z.

[Device] stp enable

Permission denied.

[Device]

# Execute the interface command. Because you are authorized to execute the command, you enter the interface view.

[Device] interface gigabitethernet 1/0/1

[Device-GigabitEthernet1/0/1]

Configuring command accounting

About command accounting

Command accounting uses the HWTACACS server to record all executed commands to monitor user behavior on the device.

If command accounting is enabled but command authorization is not, every executed command is recorded. If both command accounting and command authorization are enabled, only authorized commands that are executed are recorded.

Restrictions and guidelines

The command accounting method can be the same as or different from the command authorization method and user login authorization method.

To make the command accounting feature take effect, you must configure a command accounting method in ISP domain view. For more information, see Security Configuration Guide.

Procedure

1. Enter system view.

system-view

2. Enter user line view or user line class view.

¡ Enter user line view.

line { first-number1 [ last-number1 ] | { aux | console | tty | usb | vty } first-number2 [ last-number2 ] }

¡ Enter user line class view.

line class { aux | console | tty | usb | vty }

A setting in user line class view takes effect only on users who log in after the setting is made. It does not affect users who are already online when the setting is made.

3. Enable scheme authentication.

In non-FIPS mode:

authentication-mode scheme

By default, authentication is disabled for console login and TTY login, and password authentication is enabled for AUX login and VTY login.

In FIPS mode:

authentication-mode scheme

By default, scheme authentication is enabled.

4. Enable command accounting.

command accounting

By default, command accounting is disabled. The accounting server does not record the commands executed by users.

If the command accounting command is configured in user line class view, command accounting is enabled on all user lines in the class. You cannot configure the undo command accounting command in the view of a user line in the class.

Example: Configuring command accounting

Network configuration

As shown in Figure 14, users need to log in to the device to manage the device.

Configure the device to send commands executed by users to the HWTACACS server to monitor and control user operations on the device.

Figure 14 Network diagram

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Procedure

# Enable the Telnet server.

<Device> system-view

[Device] telnet server enable

# Enable command accounting for user line console 0.

[Device] line console 0

[Device-line-console0] command accounting

[Device-line-console0] quit

# Enable command accounting for user lines VTY 0 through VTY 63.

[Device] line vty 0 63

[Device-line-vty0-63] command accounting

[Device-line-vty0-63] quit

# Create HWTACACS scheme tac.

[Device] hwtacacs scheme tac

# Configure the scheme to use the HWTACACS server at 192.168.2.20:49 for accounting.

[Device-hwtacacs-tac] primary accounting 192.168.2.20 49

# Set the shared key to expert.

[Device-hwtacacs-tac] key accounting simple expert

# Remove domain names from usernames sent to the HWTACACS server.

[Device-hwtacacs-tac] user-name-format without-domain

[Device-hwtacacs-tac] quit

# Configure the system-defined domain (system) to use the HWTACACS scheme for command accounting.

[Device] domain system

[Device-isp-system] accounting command hwtacacs-scheme tac

[Device-isp-system] quit

Verifying the configuration

Use Host A, Host B, and Host C as a Telnet or SSH client to log in to the device respectively, and perform VLAN and interface configuration. The accounting server processes accounting packets from the hosts as defined by the accounting settings.

01-Fundamentals Configuration Guide

About using the console port for the first device access

Prerequisites

Procedure

User line types

User line assignment

Disabling authentication for console, AUX, or USB login

Configuring password authentication for console, AUX, or USB login

Configuring common console, AUX, or USB login settings

Restrictions and guidelines

Procedure

Configuring Telnet login

About Telnet login

Configuring the device as a Telnet server

Telnet server configuration tasks at a glance

Configuring password authentication for Telnet login

Configuring scheme authentication for Telnet login

Configuring common VTY line settings

Using the device to log in to a Telnet server

About using the device to log in to a Telnet server

Procedure

Configuring the device as an SSH server

About SSH server configuration procedure

Procedure

Using the device to log in to an SSH server

About using the device to log in to an SSH server

Prerequisites

Procedure

Configuring the device as a Telnet redirect server

Display and maintenance commands for CLI login

About HTTPS login

Restrictions and guidelines

Procedure

Setting the Web connection idle-timeout timer

Specifying the maximum number of online HTTP or HTTPS users

Logging off Web users

Verifying the configuration

Verifying the configuration

Controlling Telnet and SSH logins

Example: Controlling Telnet login

Network configuration

Procedure

Network configuration

Procedure

Verifying the configuration

Controlling SNMP access

Network configuration

Procedure

Verifying the configuration

Network configuration

Procedure

Verifying the configuration

Network configuration

Procedure

Verifying the configuration

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Disabling authentication for console, AUX, o r USB login

Configuring password authentication for console , AUX, or USB login