To our delight, SBR supports IP address pool management. We used the radius.ini file to ensure that the address pools were kept mutually exclusive and to avoid IP address overlap across multiple realms. The ability to allocate IP address pools based on NAS device gave us granularity in authorizing clients with respect to network resources.
Although navigation and administration were simple, to administer the server remotely we had to install the Win32 Server Configuration API on every remote computer. Or you could run SBR from a terminal server and use Terminal Service clients for remote administration. In contrast, Cisco's ACS and Interlink's RAD-Series let you configure the server remotely from a Web page. Funk says SBR 5.0 will have a Web-based installer.
SBR was the only server tested to support user-based accounting for EAP-TTLS (EAP-Tunneled Transport Layered Security) in anonymous mode. EAP-TTLS and EAP-PEAP (EAP-Protected EAP) use anonymous user names to set up tunnels and then encrypt all data in the tunnels. Most RADIUS servers can't extract accounting data from such sessions because the user credentials are hidden.
SBR doesn't support time quotas and native time-of-day enforcement, but honors time-of-day restrictions. You can impose session time-out and concurrent logon restrictions as attributes on individual user and group profiles. But SBR doesn't offer administrative or configuration audit logs; this could make it difficult to track and troubleshoot changes. The level of logging can extend to capturing each transaction the server makes apart from the standard accepts, rejects and discards, and also to why the requests were rejected.
Our favorite reporting feature in SBR is its ability to tie server statistics to the Windows Performance Monitor. This one-stop shop provides an overall perspective of server-resource use. Even the management interface has a real-time counter of server stats. The display session tab is a brilliant reporting tool; we used it to keep track of how the server was handling multiple session threads.
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