I must seriously be the only person in the world with this problem, which is obviously pretty hard to believe but I have searched and searched and asked and asked and still can't find anyone with a complete answer.
The issue is that my Netcomm NB7 DSL modem will not forward port 80 from the WAN side to port 80 on the LAN side because it uses port 80 to access the modems config pages. So I have had to forward inbound HTTP requests to port 81 and configure my server to listen on port 81 rather than port 80.
I only have one internet connection and therefore have to access my server from a machine on the same network and behind the same modem as the server. Initially when I tried to access the server from a local machine by the domain name of a site hosted on the server, rather than display the site my browser would attempt to log into the modems config pages. I got around this by editing my "hosts" file to point the domain name at the network IP of the server but because the server listens on port 81 I have to append :81 to the domain name to get it to work.
This creates issues with trying to use a CMS like Wordpress for example to build websites on the server. If I install Wordpress using a browser on my local machine and then log into the Wordpress backend and go to the general settings page the sites address shows as http://mydomain.com:81
which is viewable from a local machine on the network but will return an error if someone in the outside world tries to view the site.
If I remove the :81 from the end of the domain name and save the settings the site is then viewable to the outside world but cannot be accessed from a machine on the same network as the server.
There are a few other issues too but to cut a long story short and to try to get to the point, what I need is a way to get my NB7 to forward on port 80 or a modem that will.
As I said I have searched high and low and have struggled to find people having the same issue let alone find a solution. Several people have suggested to me certain brands of modem that should be able to forward port 80 but as yet I have been unable to have any of these confirmed. Obviously I need to know for sure before I go out and spend the money on a modem that might just have the same problem.
Does anyone know a way to get the NB7 to forward on port 80? Is there a trick or way to get around this?
At the end of the day I need to get my server listening on port 80, help please.