openssh unix dev - Jan 2006 - Stalls and closes

Hi,

	Trying to SSH to a server over an OPENVPN link, and it seems to be
stalling , and then closing the connection. Can I do some command line magic
to stop the stall, or get a password in before it closes?


vjofn% ssh -v tuc at 10.2.0.2
OpenSSH_3.5p1 FreeBSD-20030924, SSH protocols 1.5/2.0, OpenSSL 0x0090704f
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Rhosts Authentication disabled, originating port will not be trusted.
debug1: ssh_connect: needpriv 0
debug1: Connecting to 10.2.0.2 [10.2.0.2] port 22.
debug1: Connection established.
debug1: identity file /home/tbohml/.ssh/identity type -1
debug1: identity file /home/tbohml/.ssh/id_rsa type -1
debug1: identity file /home/tbohml/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_3.8.1p1
FreeBSD-20040419
debug1: match: OpenSSH_3.8.1p1 FreeBSD-20040419 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.5p1 FreeBSD-20030924
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 sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: dh_gen_key: priv key bits set: 122/256
debug1: bits set: 1021/2048
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
The authenticity of host '10.2.0.2 (10.2.0.2)' can't be established.
DSA key fingerprint is 37:ed:f0:c8:ab:ec:fd:b9:69:6a:3f:a3:2a:70:90:b7.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.2.0.2' (DSA) to the list of known hosts.
debug1: bits set: 1027/2048
debug1: ssh_dss_verify: signature correct
debug1: kex_derive_keys
debug1: newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: waiting for SSH2_MSG_NEWKEYS
debug1: newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: done: ssh_kex2.
debug1: send SSH2_MSG_SERVICE_REQUEST
debug1: service_accept: ssh-userauth
debug1: got SSH2_MSG_SERVICE_ACCEPT

		STALLS HERE


debug1: authentications that can continue: publickey,keyboard-interactive
debug1: next auth method to try is publickey
debug1: try privkey: /home/tbohml/.ssh/identity
debug1: try privkey: /home/tbohml/.ssh/id_rsa
debug1: try privkey: /home/tbohml/.ssh/id_dsa
debug1: next auth method to try is keyboard-interactive
Connection closed by 10.2.0.2
debug1: Calling cleanup 0x804c158(0x0)
vjofn%

Tuc at T-B-O-H wrote:
> Hi,
> 
> 	Trying to SSH to a server over an OPENVPN link, and it seems to be
> stalling , and then closing the connection. Can I do some command line
magic
> to stop the stall, or get a password in before it closes?
if your transport is flakey, then no. On the other hand, both the client
and the server are quite old versions, so you should consider updating.

-d

Shot in the dark, does reverse DNS work for your 10.x.x.x addresses from 
the server back to the client.  If you issue a:

$ dig -x 10.x.x.x

 From the server system using the clients IP, how long does it take to 
return a response?   If you have a delegation setup and they are not 
opertional or routable then the resolver will retransmit out the 
requests before failing and passing control back to SSHD to continue.


-- 
Darryl L. Miles