have anyone know about dansguardian?...

how can we set certain IP adress to certain limit?...I mean, they can download certain files (e.g: .zip, .doc etc) but they still can't browse prohibited sites...

if I use exceptioniplist, they can have a full access but that's the problemo...if I set in the bannedextensionlist, other clients that can't be allowed to download those files, now can use this priviledge...

anyone?...
thanx in advance...