Warning: No xauth data; using fake authentication data for X11 forwarding.My home directory is NFS exported over GB ethernet, and in this test case the host I am logging into is on the LAN and is RHEL 4.6 X86-64. I can ssh -X from the RHEL systems with no problem, it is just from this system to other systems. The other IA64 system we have is running RHEL 4.4 with no problem.
I have Fedora9 (x86-64) installed on my home system and ssh -X works fine.I have looked at some blogs on this issue, but none of the fixes suggested in the blogs make any difference.
Once I log in, forwarding works fine.In looking at the log, it appears that xauth is the issue as in the xauth list below.
[gaf@boslc01 ~]$ xauth listxauth: timeout in locking authority file /var/run/gdm/auth-cookie-XXF4YZIU-for-gaf
OpenSSH_5.0p1, OpenSSL 0.9.8g 19 Oct 2007 debug1: Reading configuration data /home/gaf/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to boslc03 [10.71.0.53] port 22. debug1: Connection established. debug1: identity file /home/gaf/.ssh/identity type -1 debug2: key_type_from_name: unknown key type '-----BEGIN' debug2: key_type_from_name: unknown key type '-----END' debug1: identity file /home/gaf/.ssh/id_rsa type 1 debug2: key_type_from_name: unknown key type '-----BEGIN' debug2: key_type_from_name: unknown key type '-----END' debug1: identity file /home/gaf/.ssh/id_dsa type -1 debug1: Remote protocol version 1.99, remote software version OpenSSH_3.9p1 debug1: match: OpenSSH_3.9p1 pat OpenSSH_3.* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.0 debug2: fd 3 setting O_NONBLOCK debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT receiveddebug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dssdebug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@xxxxxxxxxxxxxx,aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@xxxxxxxxxxxxxx,aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dssdebug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@xxxxxxxxxxxxxx,aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@xxxxxxxxxxxxxx,aes128-ctr,aes192-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib debug2: kex_parse_kexinit: none,zlib debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: mac_setup: found hmac-md5 debug1: kex: server->client aes128-cbc hmac-md5 none debug2: mac_setup: found hmac-md5 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 debug2: dh_gen_key: priv key bits set: 125/256 debug2: bits set: 511/1024 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'boslc03' is known and matches the RSA host key. debug1: Found key in /home/gaf/.ssh/known_hosts:1 debug2: bits set: 518/1024 debug1: ssh_rsa_verify: signature correct debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /home/gaf/.ssh/id_rsa (0x2000000800de03c0) debug2: key: (0x2000000800de3420) debug2: key: (0x2000000800de3130) debug2: key: (0x2000000800de3960) debug2: key: /home/gaf/.ssh/identity ((nil)) debug2: key: /home/gaf/.ssh/id_dsa ((nil)) debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Offering public key: /home/gaf/.ssh/id_rsa debug2: we sent a publickey packet, wait for reply debug1: Server accepts key: pkalg ssh-rsa blen 149debug2: input_userauth_pk_ok: fp 66:c6:38:ab:18:6f:52:c5:f1:70:e4:1f:62:49:4a:20
debug1: Authentication succeeded (publickey). debug1: channel 0: new [client-session] debug2: channel 0: send open debug1: Entering interactive session. debug2: callback start == Note: the following line is where the delay is debug2: x11_get_proto: /usr/bin/xauth list :0.0 2>/dev/null Warning: No xauth data; using fake authentication data for X11 forwarding. debug1: Requesting X11 forwarding with authentication spoofing. debug2: channel 0: request x11-req confirm 0 debug2: client_session2_setup: id 0 debug2: channel 0: request pty-req confirm 0 debug1: Sending environment. debug1: Sending env LANG = en_US.UTF-8 debug2: channel 0: request env confirm 0 debug2: channel 0: request shell confirm 0 debug2: fd 3 setting TCP_NODELAY debug2: callback done debug2: channel 0: open confirm rwindow 0 rmax 32768 debug2: channel 0: rcvd adjust 131072 Last login: Wed Oct 15 16:41:59 2008 from 10.71.0.51 -- Jerry Feldman <gaf@xxxxxxx> Boston Linux and Unix PGP key id: 537C5846 PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB CA3B 4607 4319 537C 5846
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