Configure TACACS+ Authentication
You can configure TACACS+ authentication for end users and firewall or Panorama administrators. You can also use a TACACS+ server to manage administrator authorization (role and access domain assignments) by defining Vendor-Specific Attributes (VSAs). For all users, you must configure a TACACS+ server profile that defines how the firewall or Panorama connects to the server. You then assign the server profile to an authentication profile for each set of users who require common authentication settings. What you do with the authentication profile depends on which users the TACACS+ server authenticates:
- Administrative accounts with authorization managed on the TACACS+ server—The following procedure describes how to configure TACACS+ authentication and authorization for firewall administrators. For Panorama administrators, refer to Configure TACACS+ Authentication for PanoramaAdministrators.
- Add a TACACS+ server profile.The profile defines how the firewall connects to the TACACS+ server.
- SelectandDeviceServer ProfilesTACACS+Adda profile.
- Enter aProfile Nameto identify the server profile.
- Enter aTimeoutinterval in seconds after which an authentication request times out (default is 3; range is 1–20).
- Select theAuthentication Protocol(default isCHAP) that the firewall uses to authenticate to the TACACS+ server.SelectCHAPif the TACACS+ server supports that protocol; it is more secure thanPAP.
- Addeach TACACS+ server and enter the following:
- Nameto identify the server
- TACACS+ ServerIP address or FQDN. If you use an FQDN address object to identify the server and you subsequently change the address, you must commit the change for the new server address to take effect.
- Secret/Confirm Secret(a key to encrypt usernames and passwords)
- ServerPortfor authentication requests (default is 49)
- ClickOKto save the server profile.
- Assign the TACACS+ server profile to an authentication profile.The authentication profile defines authentication settings that are common to a set of users.
- SelectandDeviceAuthentication ProfileAdda profile.
- Enter aNameto identify the profile.
- Set theTypetoTACACS+.
- Select theServer Profileyou configured.
- SelectRetrieve user group from TACACS+to collect user group information from VSAs defined on the TACACS+ server.The firewall matches the group information against the groups you specify in the Allow List of the authentication profile.
- SelectAdvancedand, in the Allow List,Addthe users and groups that are allowed to authenticate with this authentication profile.
- ClickOKto save the authentication profile.
- Configure the firewall to use the authentication profile for all administrators.
- Selectand edit the Authentication Settings.DeviceSetupManagement
- Select theAuthentication Profileyou configured and clickOK.
- Configure the roles and access domains that define authorization settings for administrators.
- Configure an Admin Role Profile if the administrator will use a custom role instead of a predefined (dynamic) role.
- Configure an access domain if the firewall has more than one virtual system—Select,DeviceAccess DomainAddan access domain, enter aNameto identify the access domain, andAddeach virtual system that the administrator will access, and then clickOK.
- Commityour changes to activate them on the firewall.
- Configure the TACACS+ server to authenticate and authorize administrators.Refer to your TACACS+ server documentation for the specific instructions to perform these steps:
- Add the firewall IP address or hostname as the TACACS+ client.
- Add the administrator accounts.
- Define TACACS+ VSAs for the role, access domain, and user group of each administrator.When you predefine dynamic administrator roles for users, use lower-case to specify the role (for example, entersuperuser, notSuperUser).
- Verify that the TACACS+ server performs authentication and authorization for administrators.
- Log in the firewall web interface using an administrator account that you added to the TACACS+ server.
- Verify that you can access only the web interface pages that are allowed for the role you associated with the administrator.
- In theMonitor,Policies, andObjectstabs, verify that you can access only the virtual systems that are allowed for the access domain you associated with the administrator.
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