[root@agro ~]# /usr/sbin/sshd -Dd -p 1122
debug1: sshd version OpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013
debug1: key_parse_private2: missing begin marker
debug1: read PEM private key done: type RSA
debug1: private host key: #0 type 1 RSA
debug1: key_parse_private2: missing begin marker
debug1: read PEM private key done: type ECDSA
debug1: private host key: #1 type 3 ECDSA
debug1: private host key: #2 type 4 ED25519
debug1: rexec_argv[0]='/usr/sbin/sshd'
debug1: rexec_argv[1]='-Dd'
debug1: rexec_argv[2]='-p'
debug1: rexec_argv[3]='1122'
Set /proc/self/oom_score_adj from 0 to -1000
debug1: Bind to port 1122 on 0.0.0.0.
Server listening on 0.0.0.0 port 1122.
debug1: Bind to port 1122 on ::.
Server listening on :: port 1122.
debug1: Server will not fork when running in debugging mode.
debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8
debug1: inetd sockets after dupping: 3, 3
Connection from 192.168.88.13 port 6500 on 192.168.88.29 port 1122
debug1: Client protocol version 2.0; client software version PuTTY_Release_0.69
debug1: no match: PuTTY_Release_0.69
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6.1
debug1: SELinux support enabled [preauth]
debug1: permanently_set_uid: 74/74 [preauth]
debug1: list_hostkey_types: ssh-rsa,ecdsa-sha2-nistp256,ssh-ed25519 [preauth]
debug1: SSH2_MSG_KEXINIT sent [preauth]
debug1: SSH2_MSG_KEXINIT received [preauth]
debug1: kex: client->server aes256-ctr hmac-sha2-256 none [preauth]
debug1: kex: server->client aes256-ctr hmac-sha2-256 none [preauth]
debug1: kex: [email protected] need=32 dh_need=32 [preauth]
debug1: kex: [email protected] need=32 dh_need=32 [preauth]
debug1: expecting SSH2_MSG_KEX_ECDH_INIT [preauth]
debug1: SSH2_MSG_NEWKEYS sent [preauth]
debug1: expecting SSH2_MSG_NEWKEYS [preauth]
debug1: SSH2_MSG_NEWKEYS received [preauth]
debug1: KEX done [preauth]
debug1: userauth-request for user root service ssh-connection method none [preauth]
debug1: attempt 0 failures 0 [preauth]
debug1: PAM: initializing for "root"
debug1: PAM: setting PAM_RHOST to "192.168.88.13"
debug1: PAM: setting PAM_TTY to "ssh"
debug1: userauth-request for user root service ssh-connection method gssapi-with-mic [preauth]
debug1: attempt 1 failures 0 [preauth]
debug1: Unspecified GSS failure.  Minor code may provide more information
Key table file '/etc/krb5.keytab' not found

debug1: userauth-request for user root service ssh-connection method password [preauth]
debug1: attempt 2 failures 0 [preauth]
debug1: PAM: password authentication failed for root: Authentication failure
Failed password for root from 192.168.88.13 port 6500 ssh2