Date: Sat, 31 Jul 1999 10:22:45 +0100 From: Brian Somers <brian@Awfulhak.org> To: "Chris Wasser" <cwasser@v-wave.com> Cc: questions@FreeBSD.ORG Subject: Re: IPFW & NATD Message-ID: <199907310922.KAA01678@keep.lan.Awfulhak.org> In-Reply-To: Your message of "Sat, 31 Jul 1999 01:28:55 MDT." <001a01bedb26$591f0d40$0101a8c0@vwave.com>
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> Hi there, I have a problem that I hope can be resolved by posting here.
>
> We have a small intranet connected to a cablemodem. The machine behind the
> cablemodem is a FreeBSD box (3.2-R) with two Windows98 clients behind it
> accessing inet through network address translation. With this, we haven't
> had a problem. However, one of the clients behind the BSD machine plays
> games on the internet (the other is simply for business stuff) and needs
> certain ports forwarded for what I would imagine is DirectX DirectPlay.
>
> The following ports are in question:
>
> TCP - 47624
> UDP - 2300 to 2400
>
> Now I've tried several combinations for ipfw using divert and fwd with not
> much luck. I then turned to natd with the -redirect_port directive and
> plugged in manually, all those ports but it didn't help either. Here's what
> I did:
>
> natd.conf (called via natd -f /path/config):
>
> redirect_port tcp [bsd_inet_ip]:47624 192.168.1.2:47624
> redirect_port udp [bsd_inet_ip]:2300 192.168.1.2:2300
> ..
> ..
> redirect_port udp [bsd_inet_ip]:2400 192.168.1.2:2400
>
> It seems to me that neither ipfw (in some cases) or natd accept ranged
> values for ports, requiring manually plugging in each port one by one.
Natd does now:
redirect_port udp [bsd_inet_ip]:2300-2400 192.168.1.2:2300-2400
> ipfw add divert 47624 tcp from [bsd_inet_ip] to 192.168.1.2 47624
> ipfw add divert 2300 udp from [bsd_inet_ip] to 192.168.1.2:2300
>
> I imagine these forwarded connections must be accessible both ways
> (send<->receive) for gaming purposes. If it helps any, the game in question
> is Mechwarrior3 :)
If you find out the exact ports, drop me a line & I'll update the FAQ.
> At any rate, if anyone knows the problem here (wheter it be my own stupidity
> or not), I would appriciate any replies.
--
Brian <brian@Awfulhak.org> <brian@FreeBSD.org>
<http://www.Awfulhak.org>; <brian@OpenBSD.org>
Don't _EVER_ lose your sense of humour ! <brian@FreeBSD.org.uk>
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