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From: Sam Carleton (scarletonmiltonstreet.com)
Date: Sun Jul 22 2001 - 08:52:03 CDT

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    I am under the impression that this is NOT the most ideal place to post
    this email. Considering this question is solely about IP Filter, I
    would think that the IP FIlter mailing list would be ideal. The
    problem, I posted this email there yesterday and had NO replies, nor
    seen anyone post anything else, what so ever. Thus I am turning to you
    all, I hope you don't mind.
    ----------------------------------------------
    I am setting up my IP FIlter firewall. But I thought I should get NAT
    working the way I want it first.

    I have a cable modem and am assigned an IP via DHCP. I have a server
    behind the firewall that will host a web server, among other things. I
    need incoming requests to port 22,25,80, and 443 on the outside NIC
    (iy0) to be redirected to the respected port on my web server
    (192.168.0.5). With the below ipnat.conf, when I ssh'ed into the
    system, I ended up on the firewall, not the 192.168.0.5 server. At this
    time there is NO ipfilter rules. What am I doing wrong?

    map iy0 192.168.0.1/24 -> 0/32 proxy port ftp ftp/tcp
    map iy0 192.168.0.1/24 -> 0/32 portmap tcp/udp 40000:60000
    map iy0 192.168.0.1/24 -> 0/32

    rdr iy0 0/32 port 22 -> 192.168.0.5 port 22
    rdr iy0 0/32 port 25 -> 192.168.0.5 port 25
    rdr iy0 0/32 port 80 -> 192.168.0.5 port 80
    rdr iy0 0/32 port 443 -> 192.168.0.5 port 443

    I have also tried replacing the 0/32 in the rdr commands with
    0.0.0.0/32.