Hi,

I am trying to make SSH tunneling work without much success.

environment:

- my laptop (Windows) - source
- server1 (CentOS) - intermediate
- server2 (CentOS) - destination.

i am trying to ssh from my laptop to server2 via server1 (SSH only).
whatever i tried so far i cant see any traffic coming to server1 (tcpdump is running on server1).

appreciate any feedback.
Peace.
yanive

I don't understand the problem. Can you ssh to server1? Can you then ssh from server1 to server2? Where is the breakdown?

I am trying to establish a tunneling connection using Putty from my laptop to server2 via server1.
i can SSH to server1 and then SSH to server2 but i want to do it via tunneling.

Thanks
Y.

What tunnels do you want to open? Between which machine and which machine, and what data would pass through? What is the ultimate goal here?

Why? The purpose of an ssh tunnel is generally so you can pass other, non-ssh data through an encrypted tunnel that wouldn't otherwise be encrypted, or wouldn't otherwise have access on the necessary port. Maybe if I understood how you intend to use it, I could help with how it needs to be set up.

Are you perhaps asking for the putty equivalent of:
Which would open a tunnel between your laptop and server1, with an exit point at port 22 on server2? So that future connections from your laptop could simply access localhost:9999 and they would end up at the sshd server on server2? Or do you want to open a tunnel between server1 and server2 so that if you ssh to server1 on a special port from any computer you'll end up on server2 instead?