Radius auth

[Martin Jessa]

My question may seem to be a bit off the list but I know that people here have both experience and knowledge to help me out.
I have Soekris boxes placed different places to serve WLAN access.
All of them are connected to a main FreeBSD server with mpd to create vpn tunnels and authenticate users also acting as router and firewall/gateway.
I would like to have a central controll center where I could add new accounts, check the account status, give the users certain bandtwith based on their username and possibly handle billing. Maybe with SQL or LDAP backend.
The best way would be to have all that enabled via web based interface.
Is there any Radius setup supporting it ?

Thank you in advance.

Martin Jessa