ssh hang on wrong port - is it a bug ?

[Darren Tucker]

> Hari wrote:
> ssh client program seems to hang when specified a wrong port no (port
> on which some other server, like telnetd is running).

Don't do that, then.

> "netstat -an" shows the connection is established.
> I expect the ssh program to report invalid server msg and exit.
> Is this a bug or known behaviour ???

ssh probably waiting for the SSH server banner. telnetd is probably
waiting for a response to telnet option negotiation. Stalemate.

A quick experiment here shows the same behaviour for ftp & http servers.
I expected it for http (it doesn't say anything when you connect so is
indistinguishable from a slow ssh server) but I would have thought the
ftp server banner would have caused ssh to abort (like sshd does).

-- 
Darren Tucker (dtucker at zip.com.au)
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    Good judgement comes with experience. Unfortunately, the experience
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