> I have a small problem, my ISP owns the router at my installation.
> By default they have put it up this way that I have a fixed IP, and all
> inboud traffic to port 25 is routed to x.x.x.2 and all traffic to port 21 is
> routed to x.x.x.3
> I could ask the ISP to change the configuration of the router but this is
> costly, therefor I would like to know if there is a way to assign the
> x.x.x.2 and x.x.x.3 to the WAN interface of monowall and the sent the
> traffic to serveres placed in a proper DMZ.
Have a look at the M0n0wall Handbook, Section 16.9