Hello,

When i am trying to log in to red hat linux server,it will ask password and but after entering password, i am not able to log in.Below i mentioned output of ssh -v command.
[root@exegenix ~]# ssh -v 172.20.20.65
OpenSSH_4.7p1, OpenSSL 0.9.8b 04 May 2006
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 172.20.20.65 [172.20.20.65] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/identity type -1
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, 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_4.7
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 '172.20.20.65' is known and matches the RSA host key.
debug1: Found key in /root/.ssh/known_hosts:17
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


debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/identity
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Next authentication method: password
root@172.20.20.65's password:
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: channel 0: free: client-session, nchannels 1
Read from remote host 172.20.20.65: Connection reset by peer
Connection to 172.20.20.65 closed.
debug1: Transferred: stdin 0, stdout 0, stderr 98 bytes in 114.3 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.9
debug1: Exit status -1
[root@exegenix ~]#

Thanks in advance for your help.....

For this kind of thing it helps to look at the server-side logs.

Since you are attempting root maybe you have PermitRootLogin as "no" in sshd_config on the server.

Hello,

Thanks for your quick reply, but i am facing these problem from yesterday.Before it was working fine and i rebooted server before sometime and try to log in that time i was able to log in. But after sometime once again i try to log in i got this error.

...and you still haven't checked the logs, as was suggested. The server-side logs need to be examined for information, and again, have you checked to see if the permitrootlogin is set to "no"? If the change was made and the server rebooted, that would make that change take effect.

Are you able to log in as a 'regular' user? Is ANYONE able to log in via SSH? Is SSH even running?

could you use non root user to have a try and show the detail

A non-root user doesn't have permissions to look at those log files, and we've already asked for details, thanks.

sorry , didn't see what you write.