Users can't access the Web

I've installed FreeRadius-0.9.3 (the latest version my old RedHat Linux distribution will support). FreeRadius is working fine for logins but since installing it users can't access the Web.

I'd appreciate any advice.

I'm answering my own query. Problem solved, it turned out to be unrelated to the installation. I was misled because the problem manifested itself when I started the newly installed FreeRadius. Regards, Rob