Date: Thu, 29 Oct 1998 09:19:50 +0000 From: Richard Smith <richard@jezebel.demon.co.uk> To: Drew Baxter <netmonger@genesis.ispace.com> Cc: chat@FreeBSD.ORG Subject: Re: NAT Message-ID: <36383336.EE1E2F78@jezebel.demon.co.uk> References: <4.1.19981028212645.00a66a50@genesis.ispace.com>
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Drew Baxter wrote:
>
> I've got a NAT Question, hoping someone's used it enough to be able to help
> me out..
I'm no expert, but I *do* have a NAT that works ;-)
> Nat doesn't work. Here's my config stuff.
>
> /etc/rc.ipfw contains this to run Nat:
> natd -s -n fxp1 -l -m
> IPfw show is:
> 04000 152 21539 allow udp from any to any
> 05000 0 0 allow icmp from 209.63.182.0/24 to 209.63.182.0/24
> 05500 503 35414 allow tcp from any to any
> 05750 0 0 allow udp from any to any
> 06000 0 0 divert 8668 ip from 192.168.0.0/24 to any out xmit fxp1
> 06500 0 0 divert 8668 ip from any to 192.168.0.0/24 in recv fxp1
> 65000 0 0 allow ip from any to any
> 65535 4 264 deny ip from any to any
My guess is that the divert never happens because it is numbered above
all the allows. A matching 'allow' rule terminates rule processing for
that packet.
My divert rule is the lowest numbered rule and is a pretty standard...
$fwcmd add divert natd all from any to any via ${fw_oif}
HTH HAND
richard.
> ifconfig -a shows:
> fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> inet 209.63.182.99 netmask 0xffffff00 broadcast 209.63.182.255
> ether 00:a0:c9:af:8c:90
> media: autoselect
> supported media: autoselect 100baseTX <full-duplex> 100baseTX
> 10baseT/UTP <full-duplex> 10baseT/UTP
> fxp1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255
> ether 00:a0:c9:b4:e1:04
> media: autoselect
> supported media: autoselect 100baseTX <full-duplex> 100baseTX
> 10baseT/UTP <full-duplex> 10baseT/UTP
> --------
>
> Soo.. what am I doing wrong? I do a ping to 192.168.0.5 and it's
> 1.something ms, so that works fine.. I have gateway running, and divert is
> enabled in the kernel..
>
> ---
> Drew "Droobie" Baxter
> Network Admin/Professional Computer Nerd(TM)
> OneEX: The OneNetwork Exchange 207-942-0275
> http://www.droo.orland.me.us
> My Latest Kernel: FreeBSD 3.0-CURRENT (ONEEX) #14: Mon Oct 19 22:36:58 EDT 1998
>
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--
_______________________________________________________________________
Richard Smith Assistant Chief Engineer TRL Technology Limited
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