[SATLUG] SSH Forwarding Problem

[David Kowis]

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Sean Carolan wrote:
> Maybe someone can help me figure this out.  I have three machines,
> let's call them apple, banana and cherry.  Apple is my workstation,
> banana is a box that I can SSH to, and cherry is only available from
> banana.
> 
> If I run these commands everything works fine:
> 
> $ ssh -L 2022:cherry:22 banana
> $ ssh localhost -p 2022
> 
> And I get immediately connected to cherry with no problem.
> 
> When I try to put these settings into my ~/.ssh/config file I get this
> error on the client:
> ssh_exchange_identification: Connection closed by remote host
> 
> And this error on the server:
> channel 47: open failed: administratively prohibited: open failed
> 
> Here is a copy of my ~/.ssh/config file:
> 
> ****************
> Host banana
> Hostname banana.full.domain.name
> LocalForward 21031 cherry.full.domain.name:22
> 
> Host cherry
> Hostname localhost
> Port 21031
> HostKeyAlias cherry
> ***************
> 
> What's really frustrating is that the config file works fine for some
> hosts, but not for others.  There are about six problem hosts on my
> network that are not allowing the local port forwarding.  Any
> suggestions???


Check the obvious? Permissions on the .ssh dir? Permissions on the
files? Those usually get me :/ Ownership matters too. I didn't even know
you could do things like you're talking about ;)

- --
David Kowis

www.sourcemage.org
SourceMage GNU/Linux

Progress isn't made by early risers. It's made by lazy men trying to
find easier ways to do something.
  - Robert Heinlein
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