Any article on How to SECURE my VICIDIAL server from any attack ?
Sep 3 00:26:28 vici sshd[22129]: reverse mapping checking getaddrinfo for 86-123-197-166.rdsnet.ro [86.123.197.166] failed - POSSIBLE BREAK-IN ATTEMPT!
Sep 3 00:26:30 vici sshd[22129]: Accepted password for cron from 86.123.197.166 port 4930 ssh2
Sep 3 01:41:19 vici sshd[11939]: Accepted password for cron from 82.165.140.50 port 1160 ssh2
Sep 3 02:39:43 vici login: pam_unix(login:session): session closed for user root
Sep 3 03:07:59 vici sshd[19474]: Failed password for root from 118.122.179.71 port 53340 ssh2
Sep 3 05:25:21 vici sshd[2348]: Received signal 15; terminating.
Sep 3 05:49:56 vici sshd[2340]: Server listening on :: port 22.
Sep 3 05:49:56 vici sshd[2340]: Server listening on 0.0.0.0 port 22.
Sep 3 05:51:08 vici webmin[2903]: Webmin starting
Sep 3 06:05:09 vici sshd[8917]: reverse mapping checking getaddrinfo for 86-123-197-166.rdsnet.ro [86.123.197.166] failed - POSSIBLE BREAK-IN ATTEMPT!
Sep 3 06:05:12 vici sshd[8917]: Accepted password for cron from 86.123.197.166 port 5900 ssh2
Sep 3 06:14:25 vici sshd[16053]: reverse mapping checking getaddrinfo for 86-123-197-166.rdsnet.ro [86.123.197.166] failed - POSSIBLE BREAK-IN ATTEMPT!
Sep 3 06:14:38 vici sshd[16053]: Accepted password for root from 86.123.197.166 port 5903 ssh2
Sep 3 06:37:51 vici sshd[2340]: Received signal 15; terminating.
Sep 3 06:39:55 vici sshd[2340]: Server listening on :: port 22.
Sep 3 06:39:55 vici sshd[2340]: Server listening on 0.0.0.0 port 22.