road runner and external connections

[Marvin Bellamy]

Has anyone had any difficulty setting their firewalls with redirection 
to intranet boxes to allow connections from the outside world?  I'm 
trying to get ipf and ipnat configured, but nothing seems to be working. 
 I've used tcpdump and I can see the attempts to connection to my web 
server, and I can connect to my web server from my firewall, but 
redirection doesn't seem to be working.  Note that I've had my network 
configured to only allow outgoing connections for at least a year now. 
It's the inbound redirections that aren't working.  Also, I have a 
dynamic IP, so I used a "best guess" of 0/32 to do this.  A sample 
ipnat.rules file configured for a dynamic external IP would help a lot.