Authentication Server Settings - D-Link xStack Reference Manual

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xStack DGS-3200 Series Layer 2 Managed Gigabit Ethernet Switch Web UI Reference Guide
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:
Configure the following parameters to add an Authentication Server Host:
Parameter
IP Address
Protocol
Key
Port (1-65535)
Timeout (1-255)
Retransmit (1-20)
Click Apply to add the server host.
Figure 6 - 49. Authentication Server Settings window
Description
The IP address of the remote server host to add.
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.
Authentication key to be shared with a configured TACACS+ or RADIUS servers only. Specify
an alphanumeric string up to 254 characters.
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.
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.
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.
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