ssh_exchange_identification: Connection closed by remote host

[Alfred Hovdestad]

There appears to be a problem interacting with our kerberos server.  We 
are using PAM with Kerberos authentication.  Everything was working with 
the previous version of openssh, but logins with the latest version of 
openssh started failing.

I tried turning off kerberos authentication in PAM, and that worked.  I 
then tried pointing to a test kerberos server, and that also worked. 
The only difference is that our main kerberos server is a Windows Domain 
Controller, and our test kerberos server is a Sun.

I don't know how the interaction between openssh and kerberos changed in 
the current version, but I have a workaround.  If you would like a dump 
of the logs, please let me know.

    Alfred Hovdestad


Darren Tucker wrote:
> Alfred Hovdestad wrote:
> 
>>I am running RedHat 9.0 with openssh 3.5.  I have tried connecting from
>>a RedHat 8.0 box running openshh 3.4 and a tru64 box also with openssh
>>3.4, with the same results:  I can login to the new account, but not to
>>my existing account.
> 
> 
> Perhaps your password are expiring?
> 
> 
>>The problem is not with tcp wrappers, as I can login to one account, but
>>not another.  I have tried deleting my ssh keys, my host keys, and
>>rebooting my system, none of which has made any difference.
>>
>>Is there anything else I can check?  I can send any log information that
>>you need.
> 
> 
> Yes, you need to post the *server* side debugging, ie:
> 
> /path/to/sshd -ddd -p 2022
> 
> then in another window:
> 
> ssh -p 2022 servername
>