I've been using SSH tunnel for a while on Windows (using Putty).
On Windows with putty, it is always fine, but on mac or cygwin, it sometimes prompts the warning message:
open failed: administratively prohibited: open failed
My situation :
Me(localhost) -> Server A(ip:100.100.100.100) =>(server B(ip:192.168.25.100),server....)
i'm able to SSH into server since it has a true ip if i then want to connect to server b, i would ssh server b with it's ip(192.168.25.100)
example:
from my pc:
ssh user@100.100.100.100
then in 100.100.100.100,
ssh user@192.168.25.100
this would get me to server B with ssh
what if i want to connect to server b directly? how can i do that?
example:
from my oc:
ssh@192.168.25.100
i have tried the following:
ssh -L 22:localhost:22 user@100.100.100.100
without success
In Putty, there are three tunneling options:
Can someone explain what is the difference between them?
Is it possible to configure ssh (on linux) to allow access for tunneling only? Ie user can setup tunnels but cannot get a shell/access files?
I would like to copy stuff in bulk (reimage disk using dd) with netcat from host A to B via ssh encrypted channel on Linux.
What commands should I type on both ends?