Normal keys are forwarded over the
ssh session, so none of those will work. Instead, use the escape sequences. To kill the current session hit subsequently Enter, ~, ..
(Keep in mind that in international keyboards where
~ is set to be a composing character, you have to hit it twice: Enter, ~, ~, .)
More of these escape sequences can be listed with Enter, ~, ?:
Supported escape sequences:
~. - terminate connection (and any multiplexed sessions)
~B - send a BREAK to the remote system
~C - open a command line
~R - request rekey
~V/v - decrease/increase verbosity (LogLevel)
~^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.)
You can close the list of Escape sequences by hitting Enter.
Notice that because hitting ~~ causes
ssh to send the
~ instead of intercepting it, you can address N nested
ssh connections by hitting ~ N times. (This only applies to ~s that directly follow an Enter.) That is to say that Enter~~~~~. terminates an
ssh session 5 layers deep and keeps the other 4 intact.