ssh interactive session, through intermediate hosts ... problems ...
joshsuid at yahoo.com
Sat Dec 4 00:56:31 UTC 2010
I connect to some systems via a series of ssh "jumps" - something like:
# ssh user at host
host~/ # ssh user at host2
host2~/ # ssh user at host3
host3~/ # (do some work)
This is working well for me and does what I want it to. However, there are
some things I'd like to do that are not working well for me...
First, where on the ssh client command line (see above) can I specify a more
liberal timeout value ? Since my interactive session has three or more layers
of host between it, the whole thing falls apart if even one link slows down a
bit... how can I make my ssh sessions more tolerant to timeouts ?
Alternatively, since I control all of these systems, is there a global
FreeBSD setting (sysctl ?) that would do this ?
Second, how can I construct this session with just a single command ? When I
ssh user at host ssh user at host2 ssh user at host3
I get this error:
# ssh user at host ssh user at host2
Pseudo-terminal will not be allocated because stdin is not a terminal.
Permission denied (publickey,keyboard-interactive).
Is there a way to build this tunnel with a single command ? (an ssh command,
run over an ssh command, run over an ssh command)
Finally, is there a way to scp a file over intermediate hosts ? That is to
say, I want to scp the file: user at host:/some/file to myself, but I want
the ssh session to go through hosts X and Y first ... there must be a way
to do this where you pipe the output of scp over ssh to ... head spinning...
Thanks a lot.
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