SSH question [was: FOSS app like Hamachi? ]
Ben Scott
dragonhawk at gmail.com
Wed Feb 14 08:38:52 EST 2007
On 2/14/07, Paul Lussier <p.lussier at comcast.net> wrote:
> Is there a way to add a port-forwarding rule to an existing ssh session?
Yah, you put ssh into "command mode", and then type the -L/-R switch
as you would on the command line. You get into command mode by
sending the escape character (tilde by default), followed by a capital
C. For example (done at a Unix prompt, but can be done anywhere,
since the destination host never sees the keystrokes):
$ ~?
Supported escape sequences:
~. - terminate connection
~B - send a BREAK to the remote system
~C - open a command line
~R - Request rekey (SSH protocol 2 only)
~^Z - suspend ssh
~# - list forwarded connections
~& - background ssh (when waiting for connections to terminate)
~? - this message
~~ - send the escape character by typing it twice
(Note that escapes are only recognized immediately after newline.)
[~C sent here]
ssh> help
Commands:
-Lport:host:hostport Request local forward
-Rport:host:hostport Request remote forward
-KRhostport Cancel remote forward
-- Ben
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