01-Fundamentals Configuration Guide

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03-Login management configuration
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Contents

Login overview·· 1

Using the console port for the first device access· 2

Configuring CLI login· 3

About CLI login· 3

User lines· 3

Login authentication modes· 3

User roles· 4

Restrictions and guidelines: CLI login configuration· 4

Configuring console login· 4

About console login· 4

Restrictions and guidelines· 5

Console login configuration tasks at a glance· 5

Configuring console login authentication· 5

Configuring common console login settings· 7

Configuring Telnet login· 9

About Telnet login· 9

Restrictions and guidelines· 9

Configuring the device as a Telnet server 9

Using the device to log in to a Telnet server 13

Configuring SSH login· 13

About SSH login· 13

Configuring the device as an SSH server 14

Using the device to log in to an SSH server 15

Display and maintenance commands for CLI login· 15

Configuring Web login· 17

About Web login· 17

Restrictions and guidelines: Web login configuration· 17

Web login configuration tasks at a glance· 17

Prerequisites for Web login· 17

Configuring HTTP login· 17

Configuring HTTPS login· 18

Configuring a Web login local user 20

Managing Web connections· 20

Enabling Web operation logging· 20

Display and maintenance commands for Web login· 21

Accessing the device through SNMP·· 22

Configuring RESTful access· 23

About RESTful access· 23

Configuring RESTful access over HTTP· 23

Configuring RESTful access over HTTPS· 23

Controlling user access to the device· 25

About login user access control 25

Controlling Telnet and SSH logins· 25

Controlling Telnet logins· 25

Controlling SSH logins· 25

Controlling Web logins· 26

Configuring source IP-based Web login control 26

Configuring command authorization· 26

About command authorization· 26

Restrictions and guidelines· 26

Procedure· 26

Configuring command accounting· 27

About command accounting· 27

Restrictions and guidelines· 27

Procedure· 27

 


Login overview

The device supports the following types of login methods:

·     CLI login—At the CLI, you can enter text commands to configure and manage the device.

To log in to the CLI, you can use one of the following methods:

¡     Connect to the console port.

¡     Use Telnet.

¡     Use SSH.

·     Web login—Through the Web interface, you can configure and manage the device visually.

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

·     RESTful access—You can use RESTful API operations to configure and manage the device.

The first time you access the device, you can use one of the following methods:

·     Connect to the console port and enter admin as both the username and password to log in to the CLI of the default context.

·     Enter 192.168.0.1 in the address bar of the Web browser and enter admin as both the username and password to log in to the Web interface of the default context.

After login, you can change console or Web login parameters, configure other access methods, or create non-default contexts.

Non-default contexts do not have console ports. To log in to a non-default context for the first time, you must perform the following tasks:

1.     Log in to the default context.

2.     Switch to the non-default context by using the switchto context command.

After you log in to a non-default context, you can configure other access methods. Then, administrators of the default context and the non-default contexts can use the methods to access the non-default contexts. For more information about contexts, see Virtual Technologies Configuration Guide.

 


Using the console port for the first device access

About this task

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

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.

Figure 1 Connecting a terminal to the console port

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 following types of user lines, and different user lines require different login methods:

·     Console line: Console port.

·     Virtual type terminal (VTY) line: Telnet or SSH.

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 and VTY 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.  All 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. 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.

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.

Different login authentication modes require different user line configurations, as shown in Table 1.

Table 1 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.

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.

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 login

About console login

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

Figure 2 Logging in through the console port

The default settings are as follows:

·     If the device starts up with factory defaults, console login is enabled and the authentication mode is scheme. The username and password are both admin.

·     The device starts up with the initial configuration, console login is enabled and does not require authentication. The default user role is network-admin for a console user.

To improve device security, configure password or scheme authentication for console login immediately after you log in to the device for the first time.

Restrictions and guidelines

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

Console login configuration tasks at a glance

To configure console login, perform the following tasks:

1.     Configuring console login authentication

¡     Disabling authentication for console login

¡     Configuring password authentication for console login

¡     Configuring scheme authentication for console login

2.     (Optional.) Configuring common console login settings

Configuring console login authentication

Disabling authentication for console login

1.     Enter system view.

system-view

2.     Enter console line view or class view.

¡     Enter console line view.

line console first-number [ last-number ]

¡     Enter console line class view.

line class console

3.     Disable authentication.

authentication-mode none

 

By default, scheme authentication is enabled for console login.

 

CAUTION

CAUTION:

When authentication is disabled, users can log in to the device through the line or line class without authentication. For security purpose, disable authentication with caution.

 

4.     Assign a user role.

user-role role-name

By default, a console user of the default context is assigned the network-admin user role. Non-default contexts do not support console login.

Configuring password authentication for console login

1.     Enter system view.

system-view

2.     Enter console line view or class view.

¡     Enter Console line view.

line console first-number [ last-number ]

¡     Enter Console class view.

line class console

3.     Enable password authentication.

authentication-mode password

By default, scheme authentication is enabled for console 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 user of the default context is assigned the network-admin user role. Non-default contexts do not support console login.

Configuring scheme authentication for console login

1.     Enter system view.

system-view

2.     Enter console line view or class view.

¡     Enter console line view.

line console first-number [ last-number ]

¡     Enter console line class view.

line class console

3.     Enable scheme authentication.

authentication-mode scheme

By default, scheme authentication is enabled for console login.

 

CAUTION

CAUTION:

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.

 

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 login settings

Restrictions and guidelines

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

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

Procedure

1.     Enter system view.

system-view

2.     Enter console line view or class view.

¡     Enter console line view.

line console first-number [ last-number ]

¡     Enter console line class view.

line class console

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 }

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.

¡     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 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.

 

CAUTION

CAUTION:

Use this command with caution. If this command is used on a user line, users that log in to the device through this user line might fail to configure the system.

 

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 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

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

Telnet might be insecure because it transmits all data in plaintext form.

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, scheme authentication is enabled for Telnet login.

 

CAUTION

CAUTION:

When authentication is disabled, users can log in to the device through the line or line class without authentication. For security purpose, disable authentication with caution.

 

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 Telnet user of the default context is assigned the network-operator user role, and a Telnet user of a non-default context is assigned the context-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, scheme authentication is enabled for Telnet login.

 

CAUTION

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.

 

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.     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 Telnet user of the default context is assigned the network-operator user role, and a Telnet user of a non-default context is assigned the context-operator user role.

At device delivery,

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, scheme authentication is enabled for Telnet login.

 

CAUTION

CAUTION:

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.

 

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.     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 | 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

IMPORTANT:

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

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 this task

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

Figure 3 Telnetting from the device to a Telnet server

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.     Return 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 this task

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.

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

3.     Enable the SSH server.

ssh server enable

By default, the SSH server is enabled.

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.

authentication-mode scheme

By default, scheme authentication is enabled for VTY lines.

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.

 

CAUTION

CAUTION:

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.

 

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

protocol inbound { all | 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.

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.     Return 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 this task

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

Figure 4 Logging in to an SSH server from the device

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.

Display and maintenance commands for CLI login

Execute display commands in any view.

 

Task

Command

Remarks

Display user line information.

display line [ num1 | { console | 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 | { console | 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 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 | { console | vty } num2 }

This command is available in user view.


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.

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 this task

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. You do not need to configure an SSL server policy with the HTTPS service. This mode is easy to configure but it is insecure. A self-signed certificate is not trusted by a browser, so the browser will prompt a security risk message when you access the device through HTTPS. If you can accept the security risk with a self-signed certificate, you can choose to ignore this message and continue browsing the webpage.

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

¡     Obtain a CA certificate and apply a local certificate from the CA.

¡     Enable HTTPS service on the device.

¡     Specify an SSL server policy for the service.

¡     Configure PKI domain-related parameters.

 

IMPORTANT

IMPORTANT:

In secure mode is specified, first purchase a local certificate for SSL from an official third-party CA organization. H3C does not provide the device with a CA certificate issued by an authoritative organization.

For more information about SSL, self-signed certificates, CA-signed certificates, and PKI, see Security Configuration Guide.

Restrictions and guidelines

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

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

b.     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:

¡     Execute 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 enabled.

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 authentication and authorization mode for HTTPS login.

web https-authorization mode { auto | certificate | certificate-manual | manual }

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

7.     (Optional.) Specify the certificate field to be used as the username for certificate-based authentication

web https-authorization username { cn | email-prefix | oid oid-value }

By default, the CN field in the certificate is used as the username for certificate-based authentication.

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.

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.

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 }


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 5 SNMP access diagram

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.

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.     (Optional.) Apply an SSL server policy to the RESTful access over HTTPS service.

restful https ssl-server-policy policy-name

By default, no SSL server policy is applied to the RESTful access over HTTPS service.

The RESTful access over HTTPS service will use the SSL server policy to enhance service security. For more information about SSL server policies, see SSL configuration in Security Configuration Guide.

3.     Enable RESTful access over HTTPS.

restful https enable

By default, RESTful access over HTTPS is disabled.

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

local-user user-name [ class manage ]

5.     Configure a password for the local user.

password [ { hash | simple } password ]

6.     (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.

7.     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 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.

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.

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.

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.

For the command authorization feature to 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 ] | { console | vty } first-number2 [ last-number2 ] }

¡     Enter user line class view.

line class { console | 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.

authentication-mode scheme

By default, scheme authentication is enabled for console login and VTY 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.

 

CAUTION

CAUTION:

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.

 

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

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.

For the command accounting feature to 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 ] | { console | vty } first-number2 [ last-number2 ] }

¡     Enter user line class view.

line class { console | 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.

authentication-mode scheme

By default, scheme authentication is enabled for console login and VTY 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.

 

CAUTION

CAUTION:

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.

 

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

 

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