I'v installed the Web Adaptor on the iis web server which sits in a DMZ. The ports 6080 & 6443 are open in the firewall to ArcGIS Server. I have checked using a port scanner and have accessed the rest services directory from
"http://[arcgis server machine name]:6080/arcgis/rest/services"
But when I try to access the same rest services directory from
"http://[web server name]/arcgis/rest/services"
I get the "Could not access any GIS Server machines. Please contact your system administrator." error.
The weird thing is it lets me add arcgis server with no problem. I did have to edit the windows host file so that the arcgis server machine name would resolve. Since the web server is sitting in a DMZ.
Does the web adaptor need any other ports open?
ArcGIS Server 10.3
Windows Server 2012 R2