뭘 하려는 걸까요?
글쓴이: DefaultX / 작성시간: 화, 2005/11/01 - 3:02오후
로그 messages 에 기록된 내용입니다
사전에 나오는 단어들은 다 넣어보는것 같습니다
대체 이넘이 뭘 할수 있을까요?
당췌 불안해서 원...
Nov 1 13:12:01 jjabsae opensshd[8157]: Invalid user nothing from 140.113.239.232 Nov 1 13:12:01 jjabsae opensshd[8157]: error: Could not get shadow information for NOUSER Nov 1 13:12:01 jjabsae opensshd[8157]: Failed password for invalid user nothing from 140.113.239.232 port 53687 ssh2 Nov 1 13:12:02 jjabsae opensshd[8159]: Invalid user Where from 140.113.239.232 Nov 1 13:12:02 jjabsae opensshd[8159]: error: Could not get shadow information for NOUSER Nov 1 13:12:02 jjabsae opensshd[8159]: Failed password for invalid user Where from 140.113.239.232 port 53721 ssh2 Nov 1 13:12:02 jjabsae opensshd[8161]: Invalid user text from 140.113.239.232 Nov 1 13:12:02 jjabsae opensshd[8161]: error: Could not get shadow information for NOUSER Nov 1 13:12:02 jjabsae opensshd[8161]: Failed password for invalid user text from 140.113.239.232 port 53753 ssh2 Nov 1 13:12:03 jjabsae opensshd[8163]: Invalid user passwd from 140.113.239.232 Nov 1 13:12:03 jjabsae opensshd[8163]: error: Could not get shadow information for NOUSER Nov 1 13:12:03 jjabsae opensshd[8163]: Failed password for invalid user passwd from 140.113.239.232 port 53782 ssh2 Nov 1 13:12:04 jjabsae opensshd[8165]: Invalid user angel from 140.113.239.232 Nov 1 13:12:04 jjabsae opensshd[8165]: error: Could not get shadow information for NOUSER Nov 1 13:12:04 jjabsae opensshd[8165]: Failed password for invalid user angel from 140.113.239.232 port 53815 ssh2 Nov 1 13:12:04 jjabsae opensshd[8167]: Invalid user love from 140.113.239.232 Nov 1 13:12:04 jjabsae opensshd[8167]: error: Could not get shadow information for NOUSER Nov 1 13:12:04 jjabsae opensshd[8167]: Failed password for invalid user love from 140.113.239.232 port 53843 ssh2 Nov 1 13:12:05 jjabsae opensshd[8169]: Invalid user lost from 140.113.239.232 Nov 1 13:12:05 jjabsae opensshd[8169]: error: Could not get shadow information for NOUSER Nov 1 13:12:05 jjabsae opensshd[8169]: Failed password for invalid user lost from 140.113.239.232 port 53878 ssh2 Nov 1 13:12:05 jjabsae opensshd[8171]: Invalid user leave from 140.113.239.232 Nov 1 13:12:05 jjabsae opensshd[8171]: error: Could not get shadow information for NOUSER Nov 1 13:12:05 jjabsae opensshd[8171]: Failed password for invalid user leave from 140.113.239.232 port 53904 ssh2 Nov 1 13:12:06 jjabsae opensshd[8173]: Invalid user psy from 140.113.239.232 Nov 1 13:12:06 jjabsae opensshd[8173]: error: Could not get shadow information for NOUSER Nov 1 13:12:06 jjabsae opensshd[8173]: Failed password for invalid user psy from 140.113.239.232 port 53935 ssh2 Nov 1 13:12:07 jjabsae opensshd[8175]: Invalid user cyborg from 140.113.239.232 Nov 1 13:12:07 jjabsae opensshd[8175]: error: Could not get shadow information for NOUSER Nov 1 13:12:07 jjabsae opensshd[8175]: Failed password for invalid user cyborg from 140.113.239.232 port 53964 ssh2 Nov 1 13:12:07 jjabsae opensshd[8177]: Invalid user notice from 140.113.239.232 Nov 1 13:12:07 jjabsae opensshd[8177]: error: Could not get shadow information for NOUSER Nov 1 13:12:07 jjabsae opensshd[8177]: Failed password for invalid user notice from 140.113.239.232 port 53993 ssh2 Nov 1 13:12:08 jjabsae opensshd[8179]: Invalid user msg from 140.113.239.232 Nov 1 13:12:08 jjabsae opensshd[8179]: error: Could not get shadow information for NOUSER Nov 1 13:12:08 jjabsae opensshd[8179]: Failed password for invalid user msg from 140.113.239.232 port 54026 ssh2 Nov 1 13:12:08 jjabsae opensshd[8181]: Invalid user right from 140.113.239.232
Forums:
간혹 저걸로 뚫릴 정도로 간단한 아뒤암호가 있는 서버가 있지요...그
간혹 저걸로 뚫릴 정도로 간단한 아뒤암호가 있는 서버가 있지요...
그걸 노리는 겁니다. :evil:
저렇게 지X 거리는 것을 iptables 로 걸러주도록 스크립트 하나 짜면 좋겠는데 귀찮아서 그냥 냅두고 있어요... :twisted:
https://xenosi.de/
서버 관리 하시는 분들은 거의 매일 매일 볼수 있는 Dictionary
서버 관리 하시는 분들은 거의 매일 매일 볼수 있는 Dictionary attack... 입니다.
단순히 저거.. 만으로 뭘 한다는건.....
그냥 눈에 띌때마다
iptables -I INPUT -s 아이피 -j DROP
해서 막아버리세요....
정 불안하시다면 일전에 어떤분이 소개하신 knocking 방식으로 ssh 를 이용하시는 것도 좋겠죠.
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