Hi,
My scenario as below:
I have iPad connected to VPN configured on external NIC of TMG and running some application. On Internal NIC inside our LAN I have some web server.
I created new Outbound TCP protocol on port 1111 (My1111) and configured allow rule on TMG to allow traffic from VPN to Internal. iPAD application connected to web server on port 1111 with protocol My1111, user authenticated on server IIS and everything is OK.
But when I am trying to switch both iPAD and server binding to port 80, the application can connect only once. Next tries are failed.
I tried to find solution with TMG logs. There is no dropped packets. The only problem is protocol changed from My80, that I created, to http. This is only difference from traffic through port 1111.
Looking like a problem with caching on TMG. I already disabled all caching, but it wasn't help.
Is any way to prevent it TMG to recognize the traffic through port 80 as http?
Any help is appreciated.