Hi
I'm experimenting with Jsch and got private key ssh connections to work without
a hitch. I'm now trying to do Kerberos authentication and am getting
authentication failures:
My code:
jsch = new JSch();
jsch.setLogger( SIMPLE_LOGGER );
if ( sshKeyPath != null )
{
jsch.addIdentity( sshKeyPath );
}
jsch.setKnownHosts( "/dev/null" );
session= jsch.getSession( targetUser, targetNode, SSH_PORT );
config = new java.util.Properties();
config.put( "StrictHostKeyChecking", "no" );
config.put("PreferredAuthentications",
"gssapi-with-mic,publickey" );
session.setConfig( config );
session.connect( SSH_CONNECT_TIMEOUT );
channel = (ChannelExec)session.openChannel( "exec" );
channel.setCommand( targetCommand );
channel.setAgentForwarding( true );
inStream = channel.getInputStream();
channel.connect( SSH_CHANNEL_TIMEOUT );
With logging on I'm seeing:
junit] SSH_MSG_KEXINIT sent
[junit] SSH_MSG_KEXINIT received
[junit] kex: server->client aes128-ctr hmac-md5 none
[junit] kex: client->server aes128-ctr hmac-md5 none
[junit] SSH_MSG_KEXDH_INIT sent
[junit] expecting SSH_MSG_KEXDH_REPLY
[junit] ssh_rsa_verify: signature true
[junit] Permanently added 'benleis.desktop' (RSA) to the list of known
hosts.
[junit] SSH_MSG_NEWKEYS sent
[junit] SSH_MSG_NEWKEYS received
[junit] SSH_MSG_SERVICE_REQUEST sent
[junit] SSH_MSG_SERVICE_ACCEPT received
[junit] Authentications that can continue: gssapi-with-mic,publickey
[junit] Next authentication method: gssapi-with-mic
[junit] Authentications that can continue: publickey
[junit] Next authentication method: publickey
[junit] Disconnecting from benleis.desktop port 22
[junit] line: Failed to open the SSH channel to benleis.desktop: Auth fail
com.jcraft.jsch.JSchException
Compared to a verbose cmd-line ssh login which succeeds:
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
debug1: Host 'benleis.desktop' is known and matches the RSA host key.
debug1: Found key in /home/benleis/.ssh/known_hosts:30
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
debug1: Authentications that can continue: publickey,gssapi-with-mic,password
debug1: Next authentication method: gssapi-with-mic
debug1: Authentication succeeded (gssapi-with-mic).
I've not done much with Kerberos before. Does anyone have advice on diagnosing
the failure or some option I need to configure to get this working?
Thanks
Ben
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