I use OS X all the time to access our cluster using SSH. I duplicated your command, and I also get the debug errors, so that must not be a problem. Can you connect with another linux machine to this address? I would also check the logs on the server. The client is connecting to the server 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 so it might be a server side error. - Donald Tripp [log in to unmask] ---------------------------------------------- HPC Systems Administrator High Performance Computing Center University of Hawai'i at Hilo 200 W. Kawili Street Hilo, Hawaii 96720 http://www.hpc.uhh.hawaii.edu On Feb 5, 2007, at 3:55 PM, wenfei yu wrote: > > Hello, > > This follows "need more work to make remote login possible after > installation of SL ". > > I was actually trying to access a SL 4 machine from a Mac OS X > (Tiger) using SSH. Besides what I reported in the previous e- > mails, here I give you more information which might be related to > Mac OS X. It is not clear to me whether this is related to the > "temporary SSH problems under Mac OS X and Linux" (http:// > security.fnal.gov/cookbook/SSHonMacOSX.html) > > The output is like this. There are several such reports on the > internet but none gives me an answer. Is this only a problem with > Mac OS X ? If I use another PC linux machine will it be fine ? > > Many thanks, > > Wen > > % ssh -v -l myusername 192.168.x.x > OpenSSH_3.8.1p1, OpenSSL 0.9.7g 11 Apr 2005 > debug1: Reading configuration data /etc/ssh_config > debug1: Connecting to 192.168.x.x [192.168.x.x] port 22. > debug1: Connection established. > debug1: identity file /Users/wenfei/.ssh/identity type -1 > debug1: identity file /Users/wenfei/.ssh/id_rsa type -1 > debug1: identity file /Users/wenfei/.ssh/id_dsa type -1 > debug1: Remote protocol version 1.99, remote software version > OpenSSH_3.9p1 > debug1: match: OpenSSH_3.9p1 pat OpenSSH* > debug1: Enabling compatibility mode for protocol 2.0 > debug1: Local version string SSH-2.0-OpenSSH_3.8.1p1 > debug1: An invalid name was supplied > Cannot determine realm for numeric host address > > debug1: An invalid name was supplied > A parameter was malformed > Validation error > > debug1: An invalid name was supplied > Cannot determine realm for numeric host address > > 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 > Write failed: Broken pipe > >