proxies and firewalls

jan.muenther at jan.muenther at
Mon Feb 2 08:29:35 PST 2004

> Are you saying you know of an proxy server that does the nat
> function?

Actually, the point of having  proxies is *not* having
to route. Your proxy machine should not be able to forward packets. 

Roughly, there a two different sub-groups: Circuit layer and application
layer proxies, names should be self explaining. 

Example for an app layer gateway:

Port:   fwtk-2.1
Path:   /usr/ports/security/fwtk
Info:   A toolkit used for building firewalls based on proxy services

Example for a circuit level proxy:

Port:   nylon-1.2
Path:   /usr/ports/net/nylon
Info:   A Unix SOCKS 4 and 5 proxy server

Socks5 is already app layer, too, IIRC.

Cheers, J.

More information about the freebsd-questions mailing list