Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 2 Feb 2004 11:51:26 -0500
From:      "JJB" <Barbish3@adelphia.net>
To:        <jan.muenther@nruns.com>
Cc:        questions@freebsd.org
Subject:   RE: proxies and firewalls
Message-ID:  <MIEPLLIBMLEEABPDBIEGOEJGFHAA.Barbish3@adelphia.net>
In-Reply-To: <20040202162806.GA1639@ergo.nruns.com>

next in thread | previous in thread | raw e-mail | index | archive | help
Thanks for your reply, But I must be thick headed this morning,
because what you say below makes no sense to me.
I checked out the 2 referenced descriptions and they say
nothing about doing nat.

I have Lan with private ip address that send packets to
public internet. How does an proxy server solve the private ip
address versus my public ip address problem?

-----Original Message-----
From: owner-freebsd-questions@freebsd.org
[mailto:owner-freebsd-questions@freebsd.org]On Behalf Of
jan.muenther@nruns.com
Sent: Monday, February 02, 2004 11:28 AM
To: JJB
Cc: Jorn Argelo; questions@freebsd.org
Subject: Re: proxies and firewalls

> 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.


_______________________________________________
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to
"freebsd-questions-unsubscribe@freebsd.org"



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?MIEPLLIBMLEEABPDBIEGOEJGFHAA.Barbish3>