How to ssh to a server via an intermediate server with X11 forwarding?

[Peng Yu]

> Add some -d options to one/both ssh commands.

Here is the output (I don't find a -d option). Do you see what is wrong? Thanks.

~$ ssh -v -oProxyCommand="ssh -v -W %h:%p intermediate" -Y dest
OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011
debug1: Reading configuration data /Users/myname/.ssh/config
debug1: /Users/myname/.ssh/config line 50: Applying options for dest
debug1: Reading configuration data /etc/ssh_config
debug1: /etc/ssh_config line 20: Applying options for *
debug1: /etc/ssh_config line 53: Applying options for *
debug1: Executing proxy command: exec ssh -v -W dest.xxx.com:22 intermediate
debug1: identity file /Users/myname/.ssh/id_rsa type 1
debug1: permanently_drop_suid: 509
debug1: identity file /Users/myname/.ssh/id_rsa-cert type -1
debug1: identity file /Users/myname/.ssh/id_dsa type 2
debug1: identity file /Users/myname/.ssh/id_dsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.2
OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011
debug1: Reading configuration data /Users/myname/.ssh/config
debug1: /Users/myname/.ssh/config line 142: Applying options for intermediate
debug1: Reading configuration data /etc/ssh_config
debug1: /etc/ssh_config line 20: Applying options for *
debug1: /etc/ssh_config line 53: Applying options for *
debug1: Connecting to intermediate.xxx.com [165.91.87.71] port 22.
debug1: Connection established.
debug1: identity file /Users/myname/.ssh/id_rsa type 1
debug1: identity file /Users/myname/.ssh/id_rsa-cert type -1
debug1: identity file /Users/myname/.ssh/id_dsa type 2
debug1: identity file /Users/myname/.ssh/id_dsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.2
debug1: Remote protocol version 2.0, remote software version
OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2 pat OpenSSH*
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5-etm at openssh.com zlib at openssh.com
debug1: kex: client->server aes128-ctr hmac-md5-etm at openssh.com zlib at openssh.com
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: Server host key: RSA c8:93:83:84:3e:d9:a5:cf:e2:90:3c:8e:02:6d:1a:40
debug1: Host 'intermediate.xxx.com' is known and matches the RSA host key.
debug1: Found key in /Users/myname/.ssh/known_hosts:101
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
Ubuntu 14.04.2 LTS
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/myname/.ssh/id_rsa
debug1: Server accepts key: pkalg ssh-rsa blen 279
debug1: read PEM private key done: type RSA
debug1: Enabling compression at level 6.
debug1: Authentication succeeded (publickey).
Authenticated to intermediate.xxx.com ([165.91.87.71]:22).
debug1: channel_connect_stdio_fwd dest.xxx.com:22
debug1: channel 0: new [stdio-forward]
debug1: getpeername failed: Bad file descriptor
debug1: Requesting no-more-sessions at openssh.com
debug1: Entering interactive session.
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.2
debug1: match: OpenSSH_6.2 pat OpenSSH*
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5-etm at openssh.com none
debug1: kex: client->server aes128-ctr hmac-md5-etm at openssh.com 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: Server host key: RSA c2:6f:77:70:0e:51:ab:70:3a:b5:32:e8:c3:01:f3:57
debug1: Host 'dest.xxx.com' is known and matches the RSA host key.
debug1: Found key in /Users/myname/.ssh/known_hosts:126
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/myname/.ssh/id_rsa
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Offering DSA public key: /Users/myname/.ssh/id_dsa
debug1: Server accepts key: pkalg ssh-dss blen 433
debug1: read PEM private key done: type DSA
debug1: Authentication succeeded (publickey).
Authenticated to dest.xxx.com (via proxy).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions at openssh.com
debug1: Entering interactive session.
debug1: Requesting X11 forwarding with authentication spoofing.
debug1: Sending environment.
debug1: Sending env LANG = en_US.UTF-8
X11 forwarding request failed on channel 0
Last login: Sat Jul 18 12:28:13 2015 from intermediate.xxx.com

-- 
Regards,
Peng