Set Up RADIUS or TACACS+ Authentication
RADIUS is a client/server protocol and software that enables remote access servers to communicate with a central server to authenticate dial-in users and authorize their access to the requested system or service. TACACS+ is a well-established authentication protocol, common to UNIX networks, that allows a remote access server to forward a user's login password to an authentication server to determine whether access can be allowed to a given system.
- Create a server profile.The server profile identifies the external authentication service and instructs the firewall how to connect to that authentication service and access the authentication credentials for your users.
- Select, and then select the profile type (DeviceServer ProfilesRADIUSorTACACS+).
- Adda new RADIUS or TACACS+ server profile.
- Enter aProfile Name, such asGP-User-Auth.
- If this profile is for a firewall with multiple virtual systems capability, select a virtual system orSharedas theLocationwhere the profile is available.
- Configure the followingServer Settings:
- Timeout (sec)—The number of seconds before a server connection request times out due to lack of response from the authentication server.
- Authentication Protocol—The protocol used to connect to the authentication server. Options includeCHAP,PAP,PEAP-MSCHAPv2,PEAP with GTC, orEAP-TTLS with PAP.If you configurePEAP-MSCHAPv2(Protected Extensible Authentication Protocol Microsoft Challenge Handshakie Authentication Protocol version 2) as the authentication protocol, remote users can change their RADIUS or Active Directory (AD) passwords through the GlobalProtect app when their password expires or a RADIUS/AD administrator requires a password change at the next login.
- (RADIUS Only)Retries—The number of times the firewall attempts to connect to the authentication server before dropping the request.
- (TACACS+ only)Use single connection for all authentication—Option that allows all TACACS+ authentication requests to occur over a single TCP session rather than separate sessions for each request.
- ClickAddin theServersarea, and then enter the following information for connecting to the authentication server:
- RADIUSorTACACS+Server(IP address or FQDN of the server)
- Secret(shared secret that enables the authentication service to authenticate the firewall)
- ClickOKto save the server profile.
- (Optional) Create an authentication profile.The authentication profile specifies the server profile that the portal or gateways use when they authenticate users. On a portal or gateway, you can assign one or more authentication profiles in one or more client authentication profiles. For information on how an authentication profile within a client authentication profile supports granular user authentication, see Configure a GlobalProtect Gateway and Set Up Access to the GlobalProtect Portal.
- Select, and thenDeviceAuthentication ProfileAdda new profile.
- Enter aNamefor the profile.
- Select theAuthenticationType(RADIUSorTACACS+).
- Select the RADIUS or TACACS+ authenticationServer Profilethat you created in step 1 from the drop-down.
- (RADIUS only) EnableRetrieve user group from RADIUSif you want to include this information in the authentication profile.
- Specify theUser DomainandUsername Modifier. The endpoint combines these values to modify the domain/username string that a user enters during login. The endpoint uses the modified string for authentication and theUser Domainvalue for User-ID group mapping. Modifying user inputs is useful when the authentication service requires domain/username strings in a particular format and but you do not want to rely on users entering the domain correctly. You can select from the following options:
If theUsername Modifierincludes the%USERDOMAIN%variable, theUser Domainvalue replaces any domain string that the user enters. If theUser Domainis blank, the device removes any user-entered domain string.
- To send the unmodified user input, leave theUser Domainblank (the default) and set theUsername Modifierto the variable%USERINPUT%(the default).
- To prepend a domain to the user input, enter aUser Domainand set theUsername Modifierto%USERDOMAIN%\%USERINPUT%.
- To append a domain to the user input, enter aUser Domainand set theUsername Modifierto%USERINPUT%@%USERDOMAIN%.
- On theAdvancedtab,AddanAllow Listto select the users and user groups that are allowed to authenticate with this profile. Thealloption allows every user to authenticate with this profile. By default, the list has no entries, which means no users can authenticate.
- Committhe configuration.
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