SSH to server takes a long time.
1. Check that you have working DNS servers set in /etc/resolv.conf
nameserver 209.11.240.35
nameserver 209.11.240.36
nameserver 8.8.8.8
2. Update openssh
yum update openssh
3. debug ssh connection
[krypt@jump5 .ssh]$ ssh -v 174.139.114.98
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 174.139.114.98 [174.139.114.98] port 22.
debug1: Connection established.
debug1: identity file /home/krypt/.ssh/identity type -1
debug1: identity file /home/krypt/.ssh/id_rsa type -1
debug1: identity file /home/krypt/.ssh/id_dsa type -1
debug1: loaded 3 keys
debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3
debug1: match: OpenSSH_4.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.3
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 '174.139.114.98' is known and matches the RSA host key.
debug1: Found key in /home/krypt/.ssh/known_hosts:87
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: Unspecified GSS failure. Minor code may provide more information
No credentials cache found
debug1: Unspecified GSS failure. Minor code may provide more information
No credentials cache found
debug1: Unspecified GSS failure. Minor code may provide more information
No credentials cache found
debug1: Next authentication method: publickey
debug1: Trying private key: /home/krypt/.ssh/identity
debug1: Trying private key: /home/krypt/.ssh/id_rsa
debug1: Trying private key: /home/krypt/.ssh/id_dsa
debug1: Next authentication method: password
krypt@174.139.114.98's password:
It gets stuck at "debug1: Unspecified GSS failure. Minor code may provide more information
No credentials cache found."Try disabling gssapi-with-mic authentication in /etc/ssh/sshd_config:
# GSSAPI options
GSSAPIAuthentication no
GSSAPICleanupCredentials no
source: http://llbb.wordpress.com/2007/07/11/ssh-takes-exactly-1-minute-20-seconds-or-80-seconds/
TM
