58 DOMINION SX I NSTALLATION AND O PERATIONS MANUALEnabling RADIUSEvery unit has to be configured for RADIUS Communication to obtain authentication from the RADIUSServer. Administrators should log on to the unit as any non-RADIUS user, and then configure the unitfollowing these steps to obtain authentication:1. Click on the RADIUS Tab.Figure 61 RADIUS Configuration Display2. Check the Enable RADIUS check box.3. In the Primary Server IP field enter the address of the RADIUS server.4. In the Shared Secret field, enter the password for the client, which was added while configuring theRADIUS server. Please refer to Appendix D: RADIUS Server for additional information.5. In the Port field, enter the port number – by default, the port number is 1812, and should be modifiedin case the RADIUS server is configured for a different port number. The early deployment ofRADIUS was done using the chosen port number 1645, which conflicts with the “Datametrics” service.The officially assigned default port number for RADIUS is 1812.6. The Information for the Secondary RADIUS Server is optional. This is a mirrored image of thePrimary RADIUS Server and it is used only in case the Primary RADIUS Server fails to respond.7. Click on the [Update] button.8. Click on the [Save] button.Note:→ When you factory reset your box, all the RADIUS parameters will be lost.→ RADIUS users are not cached in the memory. Every time you log on as a RADIUS user, authenticationcomes from the RADIUS server.→ The RADIUS client sends a packet to the RADIUS server and waits for a reply. If it does not receive aresponse within 10 seconds, it resends the packet to the same server. If the Primary RADIUS Server againfails to respond, it contacts the Secondary RADIUS Server, if configured to do so. If it does not receive aresponse from the Secondary RADIUS Server, it informs the user accordingly. Thus, a user may have towait for as long as 20 seconds if one or both RADIUS server(s) fail to respond or if the Dominion SX unitis not properly configured.→ RADIUS users will appear in the Current users list in the left panel of the main window, but not in theUsers list on the Users configuration screen.
