Re: ssh/sshd hang after "debug2: channel 0: open confirm rwindow 0

Hi Peter,

A bit more information:

(1) My hotel's IP (Pasadena Hilton, service from AT&T) is NOT properly
registered in DNS:

ballen$ nslookup
> 12.191.122.167
Server: 85.37.17.16
Address: 85.37.17.16#53
** server can't find 167.122.191.12.in-addr.arpa: NXDOMAIN

(2) On opensshd version 4.8, turning UseDNS off makes no difference.
Is there some other config switch I should try?

(3) I CAN connect to an opensshd version 3.6 ssh daemon.

(4) As far as I can tell, the sshd_config files being used for the v 3.6
and v 4.8 sshd servers have only unimportant differences.

Any further thoughts or suggestions? I have a few more days in the hotel
so I can try some other things.

Cheers,
Bruce



On Sat, 15 Mar 2008, Bruce Allen wrote:

>>> So it's probably not machine misconfiguration on the client side either.
>
>> Do you know if your own hosts require correct reverse DNS records?
>
>> Maybe the hotel ISP doesn't have names set up and you're not being
>> let in because of that - while other hosts with less strict
>> requirements allow you access.
>
> Peter, as I recall one can disable the reverse DNS in ssh1 but not in ssh2.
> Is that right?
>
> I have seen this problem in the past and as I recall, the ssh-sshd dialog
> stops much earlier than I am seeing, and with a fairly clear error message
> saying that the reverse DNS lookup failed or didn't resolve to the same
> name/IP combination.
>
> So I am inclined to think that this is not the problem.
>
> Cheers,
> Bruce
>
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