ssh to a remote server via gateway server

[lux]

On Mon, Jun 2, 2008 at 4:38 PM, Cameron Simpson <cs at zip.com.au> wrote:

> On 02Jun2008 16:23, lux <yuanlux at gmail.com> wrote:
> | > >> I have a script called "sshto" that does exactly this for multihop
> ssh
> | > >> connections. Very handy, especially since you can make "sshto" the
> | > >> default transport for rsync, letting you do multihop rsyncs easily:
> | > >>
> | > >>   rsync some-dir/ host1\!host2\!host3:some-other-dir/
> | > >
> | > > It sounds like you have experience with what he is trying to do, so
> | > > please continue to advice the OP. What he is does now is ssh to PC A,
> and
> | > > then ssh to PC B. What he wants to ssh to PC B in one command, but he
> has
> | > > to go through PC A. (firewall machine?)
> | >
> | > Then he definitely wants sshto:
> | >
> | >  http://www.cskk.ezoshosting.com/cs/css/bin/sshto
> | >
> | > Conveniently, it can make use of an sshtorc file that maps "name" into
> an
> | > arbitrary "name1!name2!name3!..." ssh hop path. I routiney get only
> | > certain hosts as "sshto foo" where "foo" designates a multihop ssh
> path.
> |
> | Sounds a  very interesting tool. I gave it a try. But
> | what is shqstr?
> | looks a like a command, but not in my system
>
> Yeah, sshto shamelessly uses other scripts from that same collection.
> Shqstr quotes strings for handing to eval/sh/remote-ssh intact.
>
> The simplest thing is to go to:
>   http://www.cskk.ezoshosting.com/cs/css/
> and download the tarball, unpack into /opt/css. Source /opt/css/env.sh
> to fix up your $PATH (it appends, so as not to preempt any of your
> normal commands or libraries). Then retry.
>
> Please let me know if you have further trouble; this stuff is _meant_ to be
> usable by people who aren't me:-)
>
> Cheers,
>

Thanks a lot, I will try it. I followed your hint of ProxyCommand

here is the .ssh/config file:

Host labpc
        ProxyCommand ssh  lux at gw -t -w 3 labpc 22

When

ssh labpc

I got two layers of prompt for login. there were possible outputs:

1st, sometime, I got login to labpc , but it last 1 or 2 seconds, and get
discconetctd with this message:Connection to labpc closed by remote host.

the 2nd output is failure to login and got this message:
Write failed: Broken pipe

any suggest? thanks

Y





> --
> Cameron Simpson <cs at zip.com.au> DoD#743
> http://www.cskk.ezoshosting.com/cs/
>
> When Microsoft Office is your only hammer, pretty much everything begins to
> look like a nail. Or a thumb. - Rob Pegoraro
>
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