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DGS-3200 Series Layer 2 Managed Gigabit Ethernet Switch Web UI Reference Guide

167

NOTE: The three built-in server groups can only have server hosts running the same TACACS

daemon. TACACS/XTACACS/TACACS+ protocols are separate entities and are not compatible

with each other.

Authentication Server Settings

User-defined Authentication Server Hosts for the TACACS / XTACACS / TACACS+ / RADIUS security protocols can be set on

the Switch. When a user attempts to access the Switch with Authentication Policy enabled, the Switch will send authentication

packets to a remote TACACS / XTACACS / TACACS+ / RADIUS server host on a remote host. The TACACS / XTACACS /

TACACS+ / RADIUS server host will then verify or deny the request and return the appropriate message to the Switch. More than

one authentication protocol can be run on the same physical server host but, remember that TACACS / XTACACS / TACACS+ /

RADIUS are separate entities and are not compatible with each other. The maximum supported number of server hosts is 16.

To view the following window, click Security > Access Authentication Control > Authentication Server Settings:

Figure 6 - 49. Authentication Server Settings window

Configure the following parameters to add an Authentication Server Host:

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)

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 (1-20)

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 Apply to add the server host.

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