can't ssh out?

[Matt Price]

ho folks,

on an otherwise functioning laptop, I've suddenly found I can't ssh out,
although, fortunately, I can ssh IN, so my data's not entirely trapped.
I've tried from various user accounts, including one fresh one, so the
problem doesn't seem to be in the ~/.ssh/ directory.  

ssh -v [host] gives this:

~$ ssh -v 192.168.2.210
OpenSSH_4.3p2 Debian-8ubuntu1, OpenSSL 0.9.8c 05 Sep 2006
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for 192.*
debug1: Applying options for *
debug1: Connecting to 192.168.2.210 [192.168.2.210] port 22.
debug1: Connection established.
debug1: identity file /home/matt/.ssh/identity type -1
debug1: identity file /home/matt/.ssh/id_rsa type -1
debug1: identity file /home/matt/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version
OpenSSH_4.3p2 Debian-7ubuntu1
debug1: match: OpenSSH_4.3p2 Debian-7ubuntu1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.3p2 Debian-8ubuntu1
debug1: An invalid name was supplied
Configuration file does not specify default realm

debug1: An invalid name was supplied
A parameter was malformed
Validation error

debug1: An invalid name was supplied
Configuration file does not specify default realm

debug1: An invalid name was supplied
A parameter was malformed
Validation error

debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
Warning: Permanently added '192.168.2.210' (RSA) to the list of known
hosts.
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
------------------------------
...after this the process just hangs.  Meanwhile on the server side I
get this in /var/log/auth.log:
sshd[PID]: fatal: Timeout before authentication for 192.168.2.104

I'm not sure what the trouble can be.  As I mentioned, the process works
fine in the opposite direction so there's no issue with the network
connection, and i don't believe i've modified the files in /etc/ssh/ for
a while -- certainly not recently enough to have caused this problem
directly.  I am running ubuntu feisty, so this may be a bug in ssh, but
i don't seem anything reported on launchpad and this is pretty odd
behaviour.  So I just wondered if there was an ssh guru out there who
could help me interpret these messages.  

thanks,
matt
	


-- 
Matt Price
History Dept
University of Toronto
matt.price-H217xnMUJC0sA/PxXw9srA at public.gmane.org
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