Re: [gentoo-user] Odd problem with OpenSSH

[Mick]

On Friday 15 February 2008, Florian Philipp wrote:
> On Fri, 2008-02-15 at 20:59 +0200, Alan McKinnon wrote:
> > On Friday 15 February 2008, Florian Philipp wrote:

> > > I can use ssh to login from DAU to NOTE but not vice versa. I've
> > > played around with several settings before this happened but I'm sure
> > > it worked after my last change.

Since you've unmerged everything the above is probably irrelevant to the 
problem below.

> > > Well, ultimately I've unmerged openssh, keychain and denyhosts on
> > > both computers and removed /etc/ssh and .ssh in root's and the users'
> > > home directories and then reemerged just openssh.

Did you then run ssh-keygen on both machines?

> > Ah. You probably shouldn't have done that, unless you know for a fact
> > that YOU screwed the ssh config up beyond all hope of recovery.
> > Usually, you just sit with the same problem anyway, or make it worse by
> > removing the configs that still work

Having both machines' settings would also allow for diff-ing between them, but 
it's all irrelevant now.

> > > Yet, the situation didn't change.
> > >
> > > Here's what happening:
> > >
> > > dsl@NOTE > ssh -vvv DAU
> > >
> > > OpenSSH_4.7p1-hpn12v19, OpenSSL 0.9.8g 19 Oct 2007
> > > debug1: Reading configuration data /etc/ssh/ssh_config
> > > debug2: ssh_connect: needpriv 0
> > > debug1: Connecting to DAU [192.168.2.4] port 22.
> > > debug1: Connection established.
> > > debug1: identity file /home/dsl/.ssh/identity type -1
> > > debug1: identity file /home/dsl/.ssh/id_rsa type -1
> > > debug1: identity file /home/dsl/.ssh/id_dsa type -1
> > > ssh_exchange_identification: Connection closed by remote host

As I said above, have you generated new keys?  If yes, you could copy public 
key A to the ~/.ssh/authorized_keys file and do away with the need to enter a 
password.  It's only then that you can turn PasswordAuthentication no.

Hope this helps.
-- 
Regards,
Mick