[ldmelo]

My DDWRT is behind another router and I am having trouble setting it up as a ssh server for external access (remote putty access for tunneling).

In fact, I managed to make it work, but only with this configuration:

INTERNET
|
ROUTER1 (internet IP/192.168.0.1) (port 22 fowarded to 192.168.0.2)
| (lan port - wan port)
DDWRT (192.168.0.2/10.0.0.1) (dhcp enabled, ssh listening on port 22)
|
CLIENTS (10.0.0.X)

It works fine and I can connect via SSH to my DDWRT from work and bypass some stupid proxy restrictions. But the problem is that I need DDWRT clients to be in the same local net as router1. Something like the configuration below. But when I do it, I no longer can access the ssh server (DDWRT) remotely.

INTERNET
|
ROUTER1 (internet IP/192.168.0.1) (port 22 fowarded to 192.168.0.2)
| (lan port - lan port)
DDWRT (WAN DISABLED/192.168.0.2) (dhcp disabled, ssh listening on port 22)
|
CLIENTS (192.168.0.X)

Any help?? (router1 acts also as a Modem, therefore I can't replace it or install DDWRT on it)

[Per Yngve Berg]

You can set router 1 in bridge mode and get the public ip on the dd-wrt router.

[ldmelo]

Thank you for the replay, Per Yngve Berg.

Problem with bridge mode is that there are other clients connected to router1. That is in fact the reason I am trying to change the configuration of the network... I need all the clients from router1 and ddwrt to be on the same network, so they can communicate and access each other.

[Per Yngve Berg]

The issue is that the vpn router is not the gateway for clients. You have to enter a static route on router 1.

[ldmelo]

I feel stupid. It was just a bad configuration of the ssh server on DDWRT.

I had the right ssh port on the tab "Administration" but it turns out that there is another setting for the ssh port on the tab "Services", and I had overlooked that one, which is just the port for local access...

Now the tunnel is working fine. No need to mess with router1, only a simple port forward to 192.168.0.2.

Thanks!