.....
Apr 26 19:57:11 81-174-49-117 sshd[9220]: Did not receive identification string from 140.123.76.227
Apr 26 20:13:12 81-174-49-117 sshd[15607]: Invalid user lpd from 140.123.76.227
Apr 26 20:13:15 81-174-49-117 sshd[15607]: Failed password for invalid user lpd from 140.123.76.227 port 46245 ssh2
Apr 26 20:13:24 81-174-49-117 sshd[15731]: Invalid user lpa from 140.123.76.227
Apr 26 20:13:26 81-174-49-117 sshd[15731]: Failed password for invalid user lpa from 140.123.76.227 port 46334 ssh2
Apr 26 21:31:39 81-174-49-117 sshd[29895]: Did not receive identification string from 203.194.70.100
Apr 27 00:32:32 81-174-49-117 sshd[15598]: Did not receive identification string from 211.157.104.19
Apr 27 00:54:41 81-174-49-117 sshd[16151]: Failed password for root from 211.157.104.19 port 37296 ssh2
Apr 27 07:45:45 81-174-49-117 xinetd[29861]: START: smtp pid=12051 from=127.0.0.1
Apr 27 07:46:40 81-174-49-117 xinetd[29861]: START: smtp pid=13736 from=127.0.0.1
Apr 27 07:52:15 81-174-49-117 xinetd[29861]: START: pop3 pid=22014 from=82.105.154.10
Apr 27 08:02:16 81-174-49-117 xinetd[29861]: START: pop3 pid=1589 from=82.105.154.10
Apr 27 08:12:16 81-174-49-117 xinetd[29861]: START: pop3 pid=16005 from=82.105.154.10
Apr 27 09:05:18 81-174-49-117 sshd[13350]: Failed password for root from 203.194.70.100 port 59710 ssh2
Apr 27 09:05:24 81-174-49-117 sshd[13441]: Failed password for root from 203.194.70.100 port 59755 ssh2
......
seguono altri tentativi su root
Apr 27 09:07:36 81-174-49-117 sshd[18148]: Failed password for root from 203.194.70.100 port 60761 ssh2
....
questo non capisco cosa vuol dire, mi devo preoccupare?
Apr 27 09:07:39 81-174-49-117 sshd[18204]: Address 203.194.70.100 maps to mail.dexagroup.com, but this does not map back to the address - POSSIBLE BREAKIN ATTEMPT!
Apr 27 09:07:41 81-174-49-117 sshd[18204]: Failed password for root from 203.194.70.100 port 60806 ssh2
......