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Hello everybody,
I have been trying to create some sh tunneling commands that would allow
me to create a ssh session to a machine behind an firewall/nat from a
machine behind a firewall/nat but with a public server in between. I
have spent a day trying to figure things out but without success. So I
wanted to ask for some help to get the right command...
I have added an attachment with ASCII art that should hopefully explain
my situation and what I would like to do.
I would be very thankful if somebody could help me getting a solution.
Would somebody be willing to help?
Thanks in advance,
Jelle
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question: how can admin0 and admin1 get a ssh session with user0 to provide
remote support?
what are the exact ssh commands and there sequences for user0, admin0 and
admin1?
+----------------+ +----------+ +--------------+
+----------+
| user0 |--------| firewall |--------| internet www |--------|
firewall |
| ip: unknown | +----------+ +--------------+
+----------+
| ssh access to: | | |
| server0 | +----------+
+---------------------+
+----------------+ | firewall | | server0
|
+----------+ | ip:
84.245.3.195 |
+----------------+ | | provided
access to: |
| admin0 |------------------------------------+ | user0
|
| ip: unknown | | admin0
|
| ssh access to: | | admin1
|
| server0 |
+---------------------+
+----------------+ |
|
+----------------+ |
| admin1 |----------------------------------------------------------+
| ip: unknown |
| ssh access to: |
| server0 |
+----------------+
All systems are using Debian Linux sid or lenny, and no firewall can be
changed so only outgoing connection are allowed with exception of the
firewall of server0
------------------------------------------------------------------------
#!/bin/bash
# command script for user0
...
exit
------------------------------------------------------------------------
#!/bin/bash
# command script for admin0
...
exit
------------------------------------------------------------------------
#!/bin/bash
# command script for admin1
...
exit
------------------------------------------------------------------------
# notes:
http://www.debianadmin.com/howto-use-ssh-local-and-remote-port-forwarding.html
