What do I need to install FreeRadius?

In order to provide a better organization in the authentication services at Coral, I decided give a try freeradius.

LDAP for the authentication/authorization and Pgsql for the accounting.

Three days to achieve this, and still left the Monthly-Session-Limit.

SNMP support gave a terribly headache, so drop it, sqlcounting is experimental (how can I prove it?).

Bored saturday, worst sunday.

Quick wireless links (why am I returning to this shit?):

The hidden node is the whole problem? So what in the hell is the interference? TurboCell(TM) claims to be the solution. Is this an free alternative?