Firewall/NAT

I've got a pretty basic setup, 1 lan, 1 wan,  Running mono  1.231. 

The issue i'm having is running a jinzora server from behind this router.  i had it setup with dyndns for about 6mo. connecting to port 81 on the wan port, with a NAT translation from 81 to 80 when it came in to the jinzora server.  i wanted to get things going on port 80 so i didn't have to specify a port anymore, and could get right to the server.  changed NAT and firewall rules to port 80, and webgui port of the monowall to 55. 

I've had several people from the outside try to get in to the server, and they are greeted with "The connection to the server was reset while the page was loading.".  i've had them try both the dyndns address and the straight ip, and get the same result.  nothing in the firewall logs about them being rejected.  i've tried having them ping, which does show up as rejected, as it should.

wondering if there's something special i have to do to get port 80 working....

here's what i've got for firewall rule, and NAT rule

(allow)  TCP/UDP      *      *      192.168.1.5      80 (HTTP)      NAT Jinzora  (firewall rule)
 WAN      TCP/UDP      80 (HTTP)      192.168.1.5      80 (HTTP)      Jinzora  (NAT)


i've even set the firewall rule to log everything, and no successes, no failures, nothing showing from it at all

Found the problem.  It seems most ISPs won't allow incomming port 80 on home internet connections, you have to upgrade to the business connection for that.

To get by this problem I've implemented a webhop with dyndns to redirect port 80 traffic to 81.  Looks like normal to the end user, which was the whole goal.