Hi. Any idea if it is possible to connect via two tunnels (I need to first access a gateway via SSH, where - via SSH - I login to our actual server). Maybe via start-up script? Or using a batch version of Putty?
thanks for any advice!
Regards
Christo
Connecting via two tunnel hops?
Hi,
You basically have three possibilities:
Tunnel from
As noted above, the connection from
Tunnel from
This will open a tunnel from localhost to host1 and another tunnel from
Tunnel from
This will open a tunnel from
You basically have three possibilities:
Tunnel from
localhost
to host1
:ssh -L 9999:host2:1234 -N host1
As noted above, the connection from
host1
to host2
will not be secured.Tunnel from
localhost
to host1
and from host1
to host2
:ssh -L 9999:localhost:9999 host1 ssh -L 9999:localhost:1234 -N host2
This will open a tunnel from localhost to host1 and another tunnel from
host1
to host2
. However the port 9999
to host2:1234
can be used by anyone on host1
. This may or may not be a problem.Tunnel from
localhost
to host1
and from localhost
to host2
:ssh -L 9998:host2:22 -N host1
ssh -L 9999:localhost:1234 -N -p 9998 localhost
This will open a tunnel from
localhost
to host1
through which the SSH service on host2
can be used. Then a second tunnel is opened from localhost
to host2
through the first tunnel.
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