D-Link DGS-3120-24TC Product Manual - Page 248

xStack® DGS-3120 Series Managed Switch Web UI Reference Guide Figure 8-54 Authentication Server Settings window The fields that can be configured are described below: Parameter Description IP Address The IP address of the remote server host to add. Protocol The protocol used by the server host. The user may choose one of the following: TACACS - Enter this parameter if the server host utilizes the TACACS protocol. XTACACS - Enter this parameter if the server host utilizes the XTACACS protocol. TACACS+ - Enter this parameter if the server host utilizes the TACACS+ protocol. RADIUS - Enter this parameter if the server host utilizes the RADIUS protocol. Key Authentication key to be shared with a configured TACACS+ or RADIUS servers only. Specify an alphanumeric string up to 254 characters. Port (1-65535) Enter a number between 1 and 65535 to define the virtual port number of the authentication protocol on a server host. The default port number is 49 for TACACS/XTACACS/TACACS+ servers and 1813 for RADIUS servers but the user may set a unique port number for higher security. Timeout (1-255 sec) Enter the time in seconds the Switch will wait for the server host to reply to an authentication request. The default value is 5 seconds. Retransmit (1-255 times) Enter the value in the retransmit field to change how many times the device will resend an authentication request when the TACACS server does not respond. Click the Apply button to accept the changes made. NOTE: More than one authentication protocol can be run on the same physical server host but, remember that TACACS/XTACACS/TACACS+ are separate entities and are not compatible with each other. Login Method Lists Settings User-defined or default Login Method List of authentication techniques can be configured for users logging on to the Switch. The sequence of techniques implemented in this command will affect the authentication result. For example, if a user enters a sequence of techniques, for example TACACS - XTACACS- local, the Switch will send an authentication request to the first TACACS host in the server group. If no response comes from the server host, the Switch will send an authentication request to the second TACACS host in the server group and so on, until the list is exhausted. At that point, the Switch will restart the same sequence with the following protocol listed, XTACACS. If no authentication takes place using the XTACACS list, the local account database set in the Switch is used to authenticate the user. When the local method is used, the privilege level will be dependent on the local account privilege configured on the Switch. Successful login using any of these techniques will give the user a "User" privilege only. If the user wishes to upgrade his or her status to the administrator level, the user must use the Enable Admin window, in which the user must enter a previously configured password, set by the administrator. To view this window, click Security > Access Authentication Control > Login Method Lists Settings as shown below: 240