Stand-a-lone NAT PGM

[FBSD_User]

Are you saying I can run NATD as a stand-a-lone function? IE: not
enabling IPFW and using the 'divert natd' rule

-----Original Message-----
From: owner-freebsd-questions at freebsd.org
[mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Matthew
Emmerton
Sent: Tuesday, July 01, 2003 6:49 PM
To: FBSD_user at adelphia.net; freebsd-questions at FreeBSD. ORG
Subject: Re: Stand-a-lone NAT PGM

> I have been looking for NAT program which is not part of some
other
> program like NATD is part of IPFW or IPNAT is part of IPFILTER or
> NAT of user ppp. I can not find any NAT program in the FBSD ports
> collection unless I mis-understood some description.  If anybody
> knows of one please let me know. Yes I know that I can set
firewall
> rule to pass all packets just to use NAT function, but I don't
want
> overhead of firewall logic, just simple NAT like PPP NAT function
> with out the PPP stuff.

The reason you can't find a NAT program in the ports collection is
because
such a program exists in the base system.
natd(8) is a front-end to the libalias(3) library, which implements
generic
packet aliasing and masqerading functions (aka NAT).

> I was wondering if the NAT logic code from user ppp could be
copied
> and made into stand-a-lone NAT program. My programming ability is
> not great so I am asking for opinions  on weather this is
technical
> possible?  Thanks

Both ppp(8) and natd(8) use the libalias(3) library for NAT
functionality.

--
Matt Emmerton

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