I have two servers a RDS server and a hyperv host, the RDS server has all the rds services in it remote apps work and I can connect to local machines using the RDS gateway, I install a RD virtualization HOST on a hyperv host and created a pooled desktop deployment desktop-1 and desktop-2, all seems to be working, I can launch a pooled desktop while on LAN, Once on the WAN I can not access to pooled desktops from rdweb or remote desktop app for a 8.1 client, same client I can access RDweb, remote apps, remote computers using the RD Gateway but I can not access any of the pooled desktops. I attempted to connect and goes through the motions but hangs at "initiating remote connection" and will stay there forever, on the RDS gateway server there is no connection listed. I try to connect through the RDS gateway directly to one of the pooled desktop computers it connects without issue. I've verified tcp 3389 and udp 3391 on firewall are open.
It seems like i'm missing something in he RDS gateway configuration that will allow it to connect tor pooled desktops.