# Auth Servers List

A security device can connect to one or more external authentication (auth) servers on which you store user accounts. When the security device receives a connection request that requires authentication verification, the device requests an authentication check from the external auth server specified in the policy, Layer 2 Tunneling Protocol (L2TP) tunnel configuration, or Internet Key Exchange (IKE) gateway configuration. The security device then acts as a relay between the user who requests authentication and the auth server that grants authentication.

A security device treats each auth server as an object that it can reference in policies, IKE gateways, and L2TP tunnels.

## Viewing the Auth Server List

The Auth Server List table lists the auth servers configured on the device. It also provides the following information about each server:

ID: Indicates the unique identification number of the auth server.

Name: Indicates the name of the auth server.

Server IP/Name: Indicates the IP address or domain name of the auth server.

Type: Indicates the type of auth server—local, RADIUS, SecurID, LDAP, or TACACS+.

Acct Type: : Indicates the types of users the auth server supports—auth, L2TP, XAuth, 802.1X, IKEv2EAP, or admin by itself.

Configure: Click Edit to modify the auth server, or click Remove to delete it.

To configure an auth server, click New. For more information, see Auth Server Configuration.

Note: An asterisk (*) in the first column of the Auth Server List table indicates the auth servers in use.