Problems with OpenSSH/Cygwin connectivity to Windows NT/2000 machines.

[Tevfik Karagülle]

I tested password authentication with Putty 0.53 and ssh 4.1. Both fail.

Switches '-vvv' on client side and '-d -d -d' on daemon side gave no
reasonable explanations.

We established environment 2 (Cygwin 1.5.17, openssh 4.1p-1, openssl 0.9.7g)
on an 2000 machine. 
Putty/ssh from an XP PC and a 2000 server gave 'access denied' errors. We
made then  a simple update: replacing cygwin1.dll v1.5.17 with v1.5.14.
Everything works as expected.

That's reason I sent a message to this mailing list. It seems to me it might
be something in cygwin1.dll causing the problem.

Best regards Tev

> -----Original Message-----
> From: Igor Pechtchanski [mailto:pechtcha@cs.nyu.edu] 
> Sent: 4. juni 2005 02:07
> To: Tevfik Karagülle
> Cc: cygwin@cygwin.com
> Subject: Re: Problems with OpenSSH/Cygwin connectivity to 
> Windows NT/2000 machines.
> 
> On Fri, 3 Jun 2005, Tevfik Karagülle wrote:
> 
> >  Hi,
> >
> > Are there essential differences between cygwin versions 1.5.14 and 
> > 1.5.17 regarding openssh authentication ?
> >
> > I have two test environments:
> >
> > 1) Cygwin 1.5.14, openssh 4.1p-1, openssl 0.9.7g
> > 2) Cygwin 1.5.17, openssh 4.1p-1, openssl 0.9.7g
> >
> > While everything (nt/2000/xp/2003) work as expected in 
> environment 1, 
> > we get 'access denied' messages when we try to connect to nt/2000 
> > machines in environment 2.  Xp and 2003 work just fine.
> >
> > Any clues ?
> 
> Since you mention authentication, I assume you're asking 
> about sshd.  I also assume you've eliminated the client from 
> the equation by using the same host to ssh into the machines 
> in question.
> 
> In what situation do you get "access denied"?  Do you use 
> public key authentication?  Are your permissions identical on 
> sshd support/config files?  Are /etc/passwd and /etc/group 
> files up-to-date on both machines?
> Did you try running sshd with debugging flags?  Do you get 
> any messages in the log files or in the Windows Event Log?  
> What does "ssh -vvv" (yes, on the client) report when 
> connecting to both working and non-working machines?
> 
> If worse comes to worst, and the above doesn't provide any 
> clues, there's always strace (the output of which from both 
> machines can be compared easily enough).
> 	Igor
> -- 
> 				http://cs.nyu.edu/~pechtcha/
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>      |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
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> 
> "The Sun will pass between the Earth and the Moon tonight for 
> a total Lunar eclipse..." -- WCBS Radio Newsbrief, Oct 27 
> 2004, 12:01 pm EDT
> 
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