Date: Wed, 24 Dec 1997 01:48:45 +0000 From: Brian Somers <brian@awfulhak.org> To: Chris Aubuchon <chrisa@commlet.com> Cc: questions@freebsd.org Subject: Re: natd/libalias question Message-ID: <199712240148.BAA18064@awfulhak.demon.co.uk> In-Reply-To: Your message of "Tue, 23 Dec 1997 15:12:58 CST." <9712231512.aa08867@commlet.commlet.com>
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> Greetings,
>
> Do the packet aliasing functions in libalias only work with private
> IP addresses? 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16.
No - any addresses are fair game :-)
> I am setting up a firewall for our (as yet undelivered) internet line
> and my predecessors decided to make our interior network 126.0.0.0/24. I plan
> on changing this but for testing purposes of natd & ipfw I have left these
> alone. It appears that libalias is not doing what is says it should. I have
> natd started with -redirect_address 126.0.0.90 38.156.234.7 which according to
> the man pages for libalias & natd should allow outgoing requests from 126.0.0.90to appear as 38.156.234.7 and incoming requests for 38.156.234.7 to go to
> 126.0.0.90.
>
> Here is my network setup:
>
> 126.0.0.90 Internal machine
> 38.156.234.5 2.2.5-RELEASE with natd and ipfw running
> ed1 connected to 126.0.0.0/24
> ed0 connected to 38.156.234.0/24
> 38.156.234.3 2.2.5-RELEASE
>
> I run natd like so on 38.156.234.5:
> natd -v -redirect_address 126.0.0.90 38.156.234.7 -n ed0
>
> And I ping 38.156.234.3 from 126.0.0.90. Ping gets packets from 38.156.234.3
> but when I look at the output from natd I see:
>
> Out [ICMP] 126.0.0.90 -> 38.156.234.3 aliased to
> 38.156.234.5 -> 38.156.234.3
> In [ICMP] 38.156.234.3 -> 38.156.234.5 aliased to
> 38.156.234.3 -> 126.0.0.90
>
> Now according to the manpages, the output above should have .5 replaced with
> .7
>
> Any ideas?
Maybe the problem is that you're not quoting the argument to
-redirect_address ?
> Chris Aubuchon
> chrisa@commlet.com
>
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <brian@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
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