Network Ports and Routing Requirements
The SimpleHelp server is able to accept incoming connections from technicians and remote machines on any configured port. On first install the SimpleHelp server will try to use ports 80 and 443 if they are available. If these ports are in use the SimpleHelp server will attempt to use a number of different ports instead. The port that is chosen during setup is dependent on what ports are available on your server. You can check and change the ports used by your SimpleHelp server in the Administration tab of the Technician Console. See the Administrator Guide here for additional details.
SimpleHelp can be configured to run on any free port. The server on which SimpleHelp is installed and any relevant routers will need to allow inbound TCP and UDP connections on all of the ports SimpleHelp is configured to us. Forwarding HTTP access or using another web server as a reverse proxy will not be sufficient.
If you are already running a web server on the same machine as your SimpleHelp server then it is likely that ports 443 and 80 are taken by the web server. In this case you can configure SimpleHelp to use an alternative port however there are advantages to being able to run SimpleHelp on port 80 or 443 since these ports are often open on proxies your customers might be connecting through.