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I want to open a reverse tunnel in background. When using OpenSSH ssh -NfR 9022: <target> always worked. When I did that with dropbear on my router, it failed like this:

# ssh -NfR 9022: <target>
ssh: Exited: Error resolving '9022:localhost:22' port '22'. Name or service not known

ssh -R works fine, but doesn't start in background. Leaving either 'f' or 'R' didn't help; it printed the same error. Replacing the with localhost didn't help either.

Please, SF, help me! :)

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up vote 4 down vote accepted

Dropbear does not support the short form of options, try this instead:

ssh -N -f -R 9022: <target>
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Damn, I should've tried that. I'll do it as soon as I have access again (about 22:00+01) – keks Feb 20 '13 at 15:50
Thanks, that did it! – keks Feb 21 '13 at 18:50

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