VPN client works well, but I am not able to open the desktop remotely

Hi all

I configured a router 877 with features of firewall and VPN and DDNS, when the user connects his WAN pc via VPN all works well (mail, telnet, ping, LAN access) but the Remote Desktop feature is not available. I traced with wireshark and saw that the request to port 3389 was correctly sent to the destination server, but the response to the VPN client has been abandoned by the router... and I have no idea how to solve this problem.

Can someone help me...? Thank you very much.

Ilaria.

In room router attached.

Your problem is the NAT-config. First of all, the next line is not necessary that RDP does not have UDP ober:

IP nat inside source static udp 192.168.10.136 3389 3389 Dialer0 interface

Then, the following command causes problems:

IP nat inside source static tcp 192.168.10.136 3389 3389 Dialer0 interface

With which the router assumes that the server 192.168.10.136 must always be reached through the IP address of dialer0 and made a translation.

There are two ways to solve the problem, but they all have some disadvantages...

(1) only access the server through VPN. For that you can just remove the NAT statement above (the one with tcp) and you should be able to reach the server via VPN.

(2) restrict the NAT for not doing a translation if a VPN-peer's access to the server.

To do this, you must attach a roadmap to the NAT statement. But who does not work with the "interface" - keyword in the NAT Statement. But you can use it if you get a fixed IP address from your provider.

(3) assign a second IP address to the RDP server. The period of the original INVESTIGATION that is used in the NAT statement is used to access the server without VPN, the second IP address is used to access the server through VPN.

--
Don't stop once you have upgraded your network! Improve the world by lending money to low-income workers:
http://www.Kiva.org/invitedBy/karsteni

Tags: Cisco Security

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