Why is Terminal Services not available?

Question

terminal emulator

Windows 2008
The terminal service was up and running
because the server inside the network made a VPN connection to another server with a real ip and forwarded the port there
, the problem is that the terminal server is not visible through the VPN.
I can connect locally
and see that:
TCP 0.0.0.0:3269 0.0.0.0:0 LISTENING
TCP 0.0.0.0:3389 0.0.0.0:0 LISTENING
TCP 0.0.0.0:4899 0.0.0.0:0 LISTENING
nmap from host vpn says they say
3269/ tcp open globalcatLDAPssl 4899
/tcp open radmin
in the terminal server configuration there is a "Network adapter" tab, but there are only (pseudo+) physical adapters. The "use all" option doesn't help.
Where to dig? Thanks in advance.