NAV Web Client

I need to open the NAV Web Client from another computer from the external network. I turned off the firewall on both the server and the computer, but I still can not open the web client. The URL I use is:
http: // serverIP: 8080 / DynamicsNAV100 / WebClient /
I run the web client on a server without any problems using the http: // localhost: 8080 / DynamicsNAV100 / WebClient /

Does anyone know what needs to be configured to allow access to external networks