[plug] name-based port forwarding with iptables

[indy at THE-TECH.MIT.EDU]

On Wed, Feb 05, 2003 at 08:52:50PM +0800, John wrote:
> I'm running woody on a 2.4 kernel with iptables setup, and what i want
> to do is port forward based on the NAME of the server that's being
> requested.
> 
> What I mean is that I have a box with a real-world IP address, which has
> two dns entries mapped to it.  That box gateways for my network.  Now,
> if a packet comes in that's trying to go to abc.org, I want that packet
> to go to one machine on the network.  If a packet comes in that's
> looking for xyz.org, I want it routed to another machine.
> 
> Nothing I've read so far tells me how to do this except for with a web
> server setup using apache.  I want to do it with smtp, and one machine
> is running postfix and the other exim.
> 
> Anyone done this?  Anyone got any ideas on how to do it?
> 

Well, it is possibel in a number of ways, but
when i've played around with doing this, I've started off
by hacking around with something like Perdition.

http://www.vergenet.net/linux/perdition/

Indy.


-- 
Indranath Neogy
<indy at the-tech.mit.edu>