[Gumstix-users] problems connecting via ssh over ppp link

[Paul <pl...@wi...>]

Hi Gumstix Users,

I have a Gumstix Verdex board configured with ppp.  The ppp serial link is
successfully established between the gumstix (ttyS0) and my (Linux) host
computer, and I can successfully ping the Verdex from the host and vice versa.

When attempting to ssh to the Verdex from my host, the connection transaction
seems to be proceeding as expected, but then times out and fails waiting for the
SSH2_MSG_KEXDH_REPLY:

$ ssh -v root@192.168.0.176
OpenSSH_5.1p1 Debian-5ubuntu1, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 192.168.0.176 [192.168.0.176] port 22.
debug1: Connection established.
debug1: identity file /home/paul/.ssh/identity type -1
debug1: identity file /home/paul/.ssh/id_rsa type -1
debug1: identity file /home/paul/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version dropbear_0.48
debug1: no match: dropbear_0.48
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.1p1 Debian-5ubuntu1
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: sending SSH2_MSG_KEXDH_INIT
debug1: expecting SSH2_MSG_KEXDH_REPLY
.
. after a long delay....
.
Read from socket failed: Connection reset by peer

Any advice on how to resolve this?

Many thanks in advance.

Paul