Tunnelling errors (works in LAN)

Perfect! So i open TCP port 22 on my Zyxel ADSL router.

What does that mean? Do you forward port 22 to your copssh server?

Yes.The copSSH Server is behind the router with private IP (192.168.0.x)
If I use Putty to connect in LAN to private IP, tunnelling works fine.
If I use Putty to connect (from Internet) to public IP of router, login works fine but tunnelling NO.

I don't know why.

How do you specify tunnelling in putty ?

Tunnels Section:Source port: 5901
Destination: :5900
Local
Auto

This configuration works in LAN.
If I connect with a PC with private IP (192.168.0.x) tunnelling works fine.

If I connect from Internet VNC doesn't works. It reports error:
"Connection failed - Error reading Protocol Version"

Thanks,
Bye

Try following:

• Specify local port forwarding in Putty (Menu Connection->SSH->Tunnels) :
• Local port - 5999, Destination - localhost:5900
• Initiate SSH connection to your public IP (Menu Session):
• Hostname your public IP, port 22, protocol ssh
• I assume that your router is configured to forward port 22 to your copssh server.
• Enter your credentials
• Your ssh tunnel will be operative after a succesful login
• Start UltraVNC and connect to localhost:5999.
• Putty tunnel will forward your localhost:5999 connection to your private IP:5900.

Now tunnelling works!!

I substitute in the destination field of Tunnels section private IP copSSH server:5900

Now Remote Desktop works too!

Thank you very much!!!