Look in the logs.  Does it show blocked connection attempts on port 8080?
If so, then you have a configuration problem.

----- Original Message ----- 
From: "ACE" <aceofsnett at cox dot net>
To: <m0n0wall at lists dot m0n0 dot ch>
Sent: Sunday, October 19, 2003 9:22 PM
Subject: [m0n0wall] Troubles


I have a web server set up on my internal network on port 8080. I have a
Dynamic Dns address setup to forward to port 8080, as my isp (cox) blocks
port 80. The forwarding itself is setup perfectly fine. However, it does not
work. I did not have this problem with the hardware router I had - Only with
m0n0wall. No doubt I am missing some basic configuration.. Do I have to
manually add a rule to the firewall for each NAT entry? If so, in what
context in this instance? Thanks.