messages 로그 확인 좀 부탁드립니다.

고수님들 cat /var/log/messages로 확인한것인데요

해킹시도였는지.. 또 무슨 짓을 하려던것인지 좀 알려주세요

그리고, 앞으로 어떻게 해야할지도 좀.. ^^;

시원하고 행복한 하루 되세요~

Jul 22 15:34:42 goksc sshd[3920]: input_userauth_request: illegal user test
Jul 22 15:34:42 goksc sshd[3920]: Failed password for illegal user test from 61.222.98.114 port 1653 ssh2
Jul 22 15:34:42 goksc sshd[3920]: Received disconnect from 61.222.98.114: 11: Bye Bye
Jul 22 15:34:43 goksc sshd[3921]: input_userauth_request: illegal user guest
Jul 22 15:34:43 goksc sshd[3921]: Failed password for illegal user guest from 61.222.98.114 port 1654 ssh2
Jul 22 15:34:43 goksc sshd[3921]: Received disconnect from 61.222.98.114: 11: Bye Bye
Jul 22 15:48:25 goksc sshd[3930]: input_userauth_request: illegal user test
Jul 22 15:48:25 goksc sshd[3930]: Failed password for illegal user test from 61.222.98.114 port 1978 ssh2
Jul 22 15:48:25 goksc sshd[3930]: Received disconnect from 61.222.98.114: 11: Bye Bye
Jul 22 15:48:27 goksc sshd[3931]: input_userauth_request: illegal user guest
Jul 22 15:48:27 goksc sshd[3931]: Failed password for illegal user guest from 61.222.98.114 port 1979 ssh2
Jul 22 15:49:09 goksc sshd[3931]: Received disconnect from 61.222.98.114: 11: Bye Bye
Jul 22 17:41:27 goksc sshd[3998]: Did not receive identification string from 211.185.96.123
Jul 22 18:29:14 goksc sshd[4028]: input_userauth_request: illegal user test
Jul 22 18:29:14 goksc sshd[4028]: Failed password for illegal user test from 156.17.99.11 port 46392 ssh2
Jul 22 18:29:14 goksc sshd[4028]: Received disconnect from 156.17.99.11: 11: Bye Bye
Jul 22 18:29:17 goksc sshd[4030]: input_userauth_request: illegal user guest
Jul 22 18:29:17 goksc sshd[4030]: Failed password for illegal user guest from 156.17.99.11 port 46452 ssh2
Jul 22 18:29:17 goksc sshd[4030]: Received disconnect from 156.17.99.11: 11: Bye Bye
Jul 22 18:29:20 goksc sshd[4031]: input_userauth_request: illegal user admin
Jul 22 18:29:20 goksc sshd[4031]: Failed password for illegal user admin from 156.17.99.11 port 46521 ssh2
Jul 22 18:29:20 goksc sshd[4031]: Received disconnect from 156.17.99.11: 11: Bye Bye
Jul 22 18:29:23 goksc sshd[4032]: input_userauth_request: illegal user admin
Jul 22 18:29:23 goksc sshd[4032]: Failed password for illegal user admin from 156.17.99.11 port 46585 ssh2
Jul 22 18:29:23 goksc sshd[4032]: Received disconnect from 156.17.99.11: 11: Bye Bye
Jul 22 18:29:26 goksc sshd[4033]: input_userauth_request: illegal user user
Jul 22 18:29:26 goksc sshd[4033]: Failed password for illegal user user from 156.17.99.11 port 46650 ssh2
Jul 22 18:29:27 goksc sshd[4033]: Received disconnect from 156.17.99.11: 11: Bye Bye
Jul 22 18:29:29 goksc sshd[4034]: Failed password for root from 156.17.99.11 port 46723 ssh2
Jul 22 18:29:30 goksc sshd[4034]: Received disconnect from 156.17.99.11: 11: Bye Bye
Jul 22 18:29:32 goksc sshd[4035]: Failed password for root from 156.17.99.11 port 46789 ssh2
Jul 22 18:29:33 goksc sshd[4035]: Received disconnect from 156.17.99.11: 11: Bye Bye
Jul 22 18:29:35 goksc sshd[4036]: Failed password for root from 156.17.99.11 port 46865 ssh2
Jul 22 18:29:36 goksc sshd[4036]: Received disconnect from 156.17.99.11: 11: Bye Bye
Jul 22 18:29:38 goksc sshd[4037]: input_userauth_request: illegal user test
Jul 22 18:29:38 goksc sshd[4037]: Failed password for illegal user test from 156.17.99.11 port 46945 ssh2
Jul 22 18:29:39 goksc sshd[4037]: Received disconnect from 156.17.99.11: 11: Bye Bye