Is it possible to authentication Socks requests?
I tried to authenticate first and applyfiltering afterwards. Using a browser this ends with an authentication loop?
I'd like to allow socks only for wsers which belongs to a dedicated AD group.
Are there any SOCKS practice guides in place?
Socks 4: Basic Auth
Socks 5: GSSAPI (kerberos) auth or Basic.
Just use the normal authentication rule set. and make sure to allow basic auth (as this is what's being used). The client will need to supply it's credentials upfront; there's no way MWG could 'ask'.