Subject: Re: tech-net : NAT 1:1 mappings
To: None <firstname.lastname@example.org>
From: Jens A Nilsson <email@example.com>
Date: 04/04/1999 09:44:05
Chris Jones <firstname.lastname@example.org>,wrote on Apr 02, 1999 at 11:26 -0700:
> I'm trying to get NAT working with a 1:1 mapping of external to
> internal IP addresses. I'd like to get it to pass through incoming
> connections to the appropriate internal IP.
> I've got my NAT machine at 18.104.22.168, and I want to make it
> forward packets for 22.214.171.124 from de0 to 10.1.240.181 on de1.
> But, of course, if I "ifconfig de0 alias 126.96.36.199", the NAT
> machine starts accepting packets for the hidden machine.
> If I use a "map" rule in ipnat.conf, it only works for outgoing
> connections. Once the connection is established, packets can go in
> both directions; but I'd like it to allow incoming connections, too.
> I can use "rdr de0 188.8.131.52/32 port 23 -> 10.1.240.181/32 port 23 tcp",
> but I have to specify that for each service on the machine. Making
> things like NFS work becomes a real pain this way.
If you use port 0 all ports will redirected the way you want.