I have gone through the installation of ArcGIS Server 10.1 SP1 and all seemed to go smoothly. However now that it is installed I have discovered that the Web Adaptor is installed on port 6080. I guess this must be a default??? So my Rest services are now showing up on http://servername:6080/arcgis/rest/services
How can I change the port of that Web Adaptor to port 80 so that outside access is available to the rest services?
I am running Windows Server 2012 with ArcGIS Server 10.1 SP1
After digging a bit deeper it appeared that some of the files for the Web Adapter were missing. I uninstalled it and re-installed it and now it does work as expected on Port 80.