이런 종류의 해킹 보셨나요

리눅스를 사용하고있습니다.

서버에 어떤 부하를 주는 프로세스는 눈씻고 찾아봐도 없고, 서버부하를 줄수 있는 요인은 하나도 없는데,

시스템이 너무 느려져서 로그파일을 조사해 봤더니 별다른 이상은 없는데, portsentry를 깔아놨더니 로그파일이 다음과 같이 발생을 합니다.

분명 해킹인것 같은데, 전혀 보시못했던 해킹시도같습니다. 아시는분 정보공유했음 좋겠습니다.

Feb 11 14:05:49 ddd portsentry[629]: adminalert: Psionic PortSentry 1.1 is starting.
Feb 11 14:05:49 ddd portsentry[632]: securityalert: Psionic PortSentry is shutting down
Feb 11 14:05:49 ddd portsentry[632]: adminalert: Psionic PortSentry is shutting down
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 1
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 11
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 15
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 79
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 111
Feb 11 14:05:49 ddd portsentry[631]: adminalert: ERROR: could not bind TCP socket: 111. Attempting t
o continue
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 119
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 143
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 540
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 635
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 1080
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 1524
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 2000
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 5742
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 6667
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 12345
Feb 11 14:05:49 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 12346
Feb 11 14:05:50 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 20034
Feb 11 14:05:50 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 27665
Feb 11 14:05:50 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 31337
Feb 11 14:05:50 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 32771
Feb 11 14:05:50 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 32772
Feb 11 14:05:50 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 32773
Feb 11 14:05:50 ddd portsentry[631]: adminalert: Going into listen mode on TCP port: 32774

이상입니다.