Re: SSH authentication

["Jerry Feldman-2" <user=4@nabble.blu.org>]

 On Tue, 1 Jan 2008 00:28:54 -0500 
Derek Martin <[hidden email]> wrote: 

> Jerry, 
> 
> On Mon, Dec 31, 2007 at 03:19:11PM -0500, Jerry Feldman wrote: 
> [...] 
> > There are 3 scenarios where key authentication does not work and I 
> > must use my password: 
> > 1. log in from one Linux system to another Linux system. 
> > 2. log in from my company Windows laptop using a key generated by 
> > Putty. 
> > 3. log in from my Linux laptop. Again, I can successfully log in from 
> > my laptop to home or the blu servers. 
> [...] 
> > In my case here, there were no changes made to ssh or sshd. 
> 
> Clearly, *something* has changed.  My first guess would be that the 
> Linux systems' sshd_config somehow got overwritten with a different 
> config file in which encryption-based authentication is disabled. 
> 
> Barring that, much more info is needed.  As usual, looking at the logs 
> from your connection attempts would likely be revealing, as would 
> the output of ssh -v $host.  It would probably be most helpful though 
> if you could run the sshd in debug mode (it will only listen to one 
> connection) and take a look at that debug output.  Feel free to post 
> that stuff for more help, if it's not immediately obvious what the 
> problem is...