[mythtv-users] MythWeb from outside my lan (from internet)

[Damian]

 >> Another method is to forward a different port to local port 80, say 
external:7654->192.168.0.4:80 <http://192.168.0.4:80>. This is the 
method I use and haven't seen any unauthorized access (I also use a 
password, don't use this as your only security!). This will also defeat 
any port blocking on port 80 that your ISP may be implementing. Of 
course your router must support this kind of forwarding, I use dd-wrt 
and it works a treat.
--Justin Johnson

How could I do this? Is it a MythWeb setting or a router setting (or both)?

Opening up port 80 has made me nervous and I don't even know if I have a 
password set for my web server. I know MythWeb has a password set, but I 
assume that's a different thing.

Thanks
Damian