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Manual Chapter : TACACS User Authentication

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BIG-IQ Centralized Management

  • 6.0.1
Manual Chapter
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TACACS+ User Authentication

Use my TACACS+ server to authenticate BIG-IQ users

BIG-IQ Centralized Management can verify user credentials against your company's TACACS+ server. After you set up BIG-IQ to use your TACACS+ server, you can add users and user groups that are authenticated by your TACACS+ server.

After you decide exactly who you want to perform certain tasks, you can provide them access to particular areas of BIG-IQ by adding them as a user and assigning the appropriate standardized role.

Before integrating BIG-IQ with your TACACS+ server for authentication and authorization

Before you set up BIG-IQ Centralized Management for authentication and authorization with your TACACS+ server, you should gather this information.

Required Information This is
Name The name of your TACACS+ server.
Host The IP address or host name of your TACACS+ server.
Port The port number of your TACACS+ server.
Secret The case-sensitive text string used to validate communication.
Primary Service The service that the authorization requests are made for, such as system, shell, or connection.
Protocol An optional subset of a service, such as telnet, ip, or http.
Test user name and password A user name and password, authenticated on your TACACS+ server.

Set up BIG-IQ to use my TACACS+ server for user authentication

Before you can set up authentication, you must have specified your DNS settings. You usually do this when you license F5 BIG-IQ Centralized Management. You must also complete all the tasks outlined in Before integrating BIG-IQ with your TACACS+ server.

You can set up BIG-IQ to use your company's TACACS+ server for user authentication.

  1. At the top of the screen, click System.
  2. On the left, click USER MANAGEMENT > Auth Providers .
  3. Click the Add button.
  4. From the Provider Type list, select TACACS+.
  5. In the Name field, type a name for this new provider.
    This must be a unique name, and can be a maximum of 152 characters.
  6. For the Servers setting, in the Host and Port fields, type the TACACS+ server's IP address (or fully qualified domain name) and port number for each of the servers you want to configure.
    To add more servers, just click the + button.
  7. In the Primary Service field, specify what type of authorization requests will be made for this service.
    For example: system, connection, or PPP.
  8. In the Protocol field, specify an optional subset of a service.
    For example: ip, telnet, or http.
  9. To encrypt the data, select the Yes check box for the Encrypt setting.
  10. To verify that BIG-IQ can reach the TACACS+ server, in the Test User and Test Password fields, type a valid user name and password, and click the Test button.
  11. Click the Save & Close button at the bottom of the screen.
You can now associate TACACS+ server users with BIG-IQ system roles.

Add a TACACS+ authenticated user and associate it with a role

You must set up F5 BIG-IQ Centralized Management with your TACACS+ server settings before you can add a TACACS+ authenticated user.
Once you understand exactly who you want to perform certain tasks, you can provide them access to particular areas of BIG-IQ by adding them as a user and assigning the appropriate built-in or custom role. You can assign as many roles as required to cover the user's responsibilities.
Important: You must associate this user with a TACACS+ authenticated role, or authentication will fail.
  1. At the top of the screen, click System.
  2. On the left, click USER MANAGEMENT > Users .
  3. Click the Add button.
  4. From theAuth Provider list, select TACACS+
  5. In the User Name field, type a name for this user. In the Password and Confirm Password fields, type a password for this new user.
  6. In the Full Name field, type a name to identify this user.
    The full name can contain a combination of symbols, letters, numbers and spaces.
  7. To associate this user with one or more user group, select the user group from the User Groups list.
    This is only an option if you've already created a user group.
  8. To associate this user with a one or more roles, select it from the Available list and move it to the Selected list.
  9. Click the Save & Close button.
Important: If this BIG-IQ is part of an HA pair, you must log in to the secondary BIG-IQ system, click System -> BIG-IQ HA, click the BIG-IQ HA Settings button, then click the Log Out & Refresh button. This procedure is required because BIG-IQ handles users and user groups differently than other data synchronized between BIG-IQ systems in an HA pair. If you don't perform this procedure, this new user cannot successfully log in to the secondary system.

Create a TACACS+ authenticated user group

Before you can add a TACACS+ authenticated user group, you must set up BIG-IQ to use your company's TACACS+ server for user authentication.
You can create a user group for multiple users to authenticate through a TACACS+ server.
Important: If a user does not belong to a TACACS+ authenticated user group, authentication will fail.
  1. At the top of the screen, click System.
  2. At the left, click USER MANAGEMENT > User Groups .
    The User Groups screen opens.
  3. Click the Add button.
  4. In the Name field, type a name for this new user group.
  5. From the Auth Provider list, select your TACACS+ provider.
  6. For the Authorization Attributes setting, in the Attribute and Value fields, type the attribute and value pair for this group's TACACS+ server.
  7. From the -[[Available ]]-+[[-[[-[[-[[+[[Available ]]+]]-+[[Available ]]+]]-+[[Available ]]+]]-+[[Available ]]+]]+Roles list, select the user roles that have the privileges you want to grant to this user group and move them to the Selected list.
  8. Click the Save & Close button.
Note: If this BIG-IQ is part of an HA pair, you must log in to the secondary BIG-IQ system, click System -> BIG-IQ HA, click the BIG-IQ HA Settings button, then click the Log Out & Refresh button. This procedure is required because BIG-IQ handles users and user groups differently than other data synchronized between BIG-IQ systems in an HA pair. If you don't perform this procedure, this new user cannot successfully log in to the secondary system.
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