I have two servers. Say A and B.
ssh-copy-ided on both servers to each other.
And I can connect from A to B without password. But I failed to connect from B to A.
I found that audit log is different
B's log when connecting from A to B (success) ... (hostname=192.168.0.1, addr=192.168.0.1, terminal=sshd ref=success A's log when connecting from B to A (failed) ... (hostname=?, addr=192.168.0.1, terminal=sshd ref=failed
Where should I look into?
Here comes what
ssh -v showed.
$ ssh -v user@<a's ip address> 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 <a_ip_address> [a_ip_address] port 22. debug1: Connection established. debug1: identity file /home/user/.ssh/identity type -1 debug1: identity file /home/user/.ssh/id_rsa type 1 debug1: identity file /home/user/.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 '<a_ip_address>' is known and matches the RSA host key. debug1: Found key in /home/<user>/.ssh/known_hosts:8 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 Unknown code krb5 195 debug1: Unspecified GSS failure. Minor code may provide more information Unknown code krb5 195 debug1: Unspecified GSS failure. Minor code may provide more information Unknown code krb5 195 debug1: Next authentication method: publickey debug1: Trying private key: /home/<user>/.ssh/identity debug1: Offering public key: /home/<user>/.ssh/id_rsa debug1: Authentications that can continue: publickey,gssapi-with-mic,password debug1: Trying private key: /home/<user>/.ssh/id_dsa debug1: Next authentication method: password user@<a_ip_address>'s password: