I am trying to access my GIS server outside the server itself. But, I have trouble and tried to solve this problem by different solutions.
The background of my server
I have Windows 2012 Server x64 with SQL Server 2012.
I'm also using IIS 8 as a web server on the same machine.
I've installed ArcGIS for Server 10.3.1 and only used the "register folder" to store feature class in the file geodatabase.
I do not use the Web Adaptor. The Authentication Tier (security) inside the ArcGIS manager is "GIS Server"
I can access the url ("http://stateparkmap.okstate.edu:6080/arcgis/rest/services") inside the server. However, I can not access the url externally by browsers (IE, Chrome and Firefox) either by wifi or ethernet. In addition, I have disabled the proxy for these browsers. The message show "resource is online but is not responding to connection" on IE or "Failed to load resource: net::ERR_CONNECTION_TIMED_OUT" on Chrome.
I have installed the DNS server to bind the ip address with the domain (stateparkmap.okstate.edu). In addiiton, I can access to the http://stateparkmap.okstate.edu/index.html outside the server.
Could you share your precious opinions for this problem?