Port forwarding.

[Daniel A.]

Ah, thanks a lot! It finally works!

*Does a happy dance*

All the other guides to ipfilter / ipnat only listed changes to ONE of
the files (either ipf.rules or ipnat.rules), and never mentioned
putting the changes before mapping, even though they did cover that
topic.

On 1/24/06, Igor Robul <igorr at speechpro.com> wrote:
> On Tue, Jan 24, 2006 at 06:41:27AM +0100, Daniel A. wrote:
> > sis0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> >         options=8<VLAN_MTU>
> >         inet6 fe80::20a:e6ff:fe53:fc1e%sis0 prefixlen 64 scopeid 0x2
> >         inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255
> >         ether 00:0a:e6:53:fc:1e
> >         media: Ethernet autoselect (100baseTX <full-duplex>)
> >         status: active
> > rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> >         options=8<VLAN_MTU>
> >         inet6 fe80::2b0:2ff:fe00:27f3%rl0 prefixlen 64 scopeid 0x3
> >         inet 87.50.69.60 netmask 0xffffff80 broadcast 87.50.69.127
> >         ether 00:b0:02:00:27:f3
> >         media: Ethernet autoselect (100baseTX <full-duplex>)
> >         status: active
> >
> > I have been googling and reading ifconfig papers all day yesterday, in
> > the search for how to do simple port-forwarding, but nothing have
> > worked.
> > So, this is my final resort: How would I forward the ports 9541 (TCP)
> > and 9542 (UDP) to 192.168.0.2 on my LAN?
> /etc/ipnat.conf:
> rdr rl0 0/0 port 9541 -> 192.168.0.2 port 9541 tcp
> rdr rl0 0/0 port 9542 -> 192.168.0.2 port 9542 udp
>
> somewhere on top of file (before "map").
>
> Also you need something like this in your /etc/ipf.rules:
>
> pass in quick on rl0 proto tcp from any to 192.168.0.2/32 port = 9541 keep state
> pass in quick on rl0 proto udp from any to 192.168.0.2/32 port = 9542 keep state
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