Login failed ( With VPN & Port 80 )

[#1]

Hello,

I have a problem to access the access point from the outside (VPN and / or port 80). When I try to connect, I get a page automatically "login2.html" and entering my password, I get an error "Login failed".

I cleared my cookies, and try to log like domain\user

I'm using NTFS security

But everything is ok in domain network.

Are they any prerequisites on ports to open?