From owner-freebsd-questions  Thu Dec  3 06:09:59 1998
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Date: Thu, 3 Dec 1998 16:09:21 +0200
From: Johann Visagie <wjv@cityip.co.za>
To: Greg Quinlan <greg@qmpgmc.ac.uk>
Cc: questions@FreeBSD.ORG
Subject: Re: Natd - IP Redirect!
References: <01be1ec2$19080fc0$380051c2@greg.qmpgmc.ac.uk>
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On Thu, 03 Dec 1998 at 13:37 SAST, Greg Quinlan wrote:
> 
> What about socks5?
> Is this similar to natd but with proxying?

No, quite different (though it may well be used for the same purposes).

Socks is a circuit-level proxy (as opposed to application layer proxies like
Squid).  In order to use socks to proxy a specific service, you need a client
for that service which has been adapted to use socks (many web browsers,
etc., can do so out of the box).

NAT is purely an address translation scheme.  It gives users on the internal,
reserve-numbered network the illusion that they have full, direct IP
connectivity to the Internet.

I recommend the natd(8) man page for a succinct but comprehensive description
of how the process works.

Note that there's no reason why you can't use NAT and proxying (whether
circuit- or application-level) simultaneously.

-- V

Johann Visagie | wjv@CityIP.co.za | Tel: +27 21 419-7878 | ICQ: 20645559

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