We have a website and can be accessed by internal users via vpn and external users from outsitde network and incoming requests from external users will talk to Bluecoat and then to IIS.
Now we are planing to migrate to ISA server from Bluecoat.
We have hosted website in server1(xxx.xxx.x.xx) in port 1610 for internal users and for external users in port 1620.
The above sites are working fine via VPN .
We have test server for ISA (server2), as part of testing we have created simulated external environment to see if external user requests are passing thru ISA server or not and we are trying to access the url via simulated external environment and getting message 'This webpage requires to login 'and not allowing to go further.
From application perspective, do I need to configure in IIS anything related to ISA?
ISA server configured for the above site.
How to trouble shoot above issue? I have access to application server but do not have access to either simulated external environment or ISA server.