brute force ssh attack

Daniel B. Thurman dant at cdkkt.com
Thu May 5 01:23:46 UTC 2005


Folks,

Seems that I am getting daily brute-force ssl attacks --
Anything I can or should do?

Here is the System Logs:
=======================================
May  4 01:01:50 linux sshd[10438]: Did not receive identification string from ::ffff:194.65.138.98
May  4 01:04:44 linux sshd[10448]: Illegal user temp from ::ffff:194.65.138.98
May  4 01:04:57 linux sshd[10448]: Failed password for illegal user temp from ::ffff:194.65.138.98 port 52888 ssh2
May  4 08:22:32 linux sshd[18976]: Did not receive identification string from ::ffff:202.157.186.162
May  4 08:31:16 linux sshd[19134]: Illegal user anonymous from ::ffff:202.157.186.162
May  4 08:31:19 linux sshd[19134]: Failed password for illegal user anonymous from ::ffff:202.157.186.162 port 51542 ssh2
May  4 08:31:21 linux sshd[19136]: Illegal user bruce from ::ffff:202.157.186.162
May  4 08:31:24 linux sshd[19136]: Failed password for illegal user bruce from ::ffff:202.157.186.162 port 51753 ssh2
May  4 08:31:26 linux sshd[19138]: Illegal user chuck from ::ffff:202.157.186.162
May  4 08:31:28 linux sshd[19138]: Failed password for illegal user chuck from ::ffff:202.157.186.162 port 51960 ssh2
May  4 08:31:31 linux sshd[19140]: Illegal user darkman from ::ffff:202.157.186.162
May  4 08:31:33 linux sshd[19140]: Failed password for illegal user darkman from ::ffff:202.157.186.162 port 52185 ssh2
May  4 08:31:35 linux sshd[19142]: Illegal user hostmaster from ::ffff:202.157.186.162
May  4 08:31:38 linux sshd[19142]: Failed password for illegal user hostmaster from ::ffff:202.157.186.162 port 52382 ssh2
May  4 08:31:40 linux sshd[19144]: Illegal user jeffrey from ::ffff:202.157.186.162
May  4 08:31:43 linux sshd[19144]: Failed password for illegal user jeffrey from ::ffff:202.157.186.162 port 52591 ssh2
May  4 08:31:45 linux sshd[19146]: Illegal user loverd from ::ffff:202.157.186.162
May  4 08:31:47 linux sshd[19146]: Failed password for illegal user loverd from ::ffff:202.157.186.162 port 52791 ssh2
May  4 08:31:50 linux sshd[19148]: Illegal user eric from ::ffff:202.157.186.162
May  4 08:31:52 linux sshd[19148]: Failed password for illegal user eric from ::ffff:202.157.186.162 port 53002 ssh2
May  4 08:31:55 linux sshd[19150]: Illegal user lauren from ::ffff:202.157.186.162
May  4 08:31:57 linux sshd[19150]: Failed password for illegal user lauren from ::ffff:202.157.186.162 port 53209 ssh2
May  4 08:31:59 linux sshd[19152]: Illegal user mark from ::ffff:202.157.186.162
May  4 08:32:02 linux sshd[19152]: Failed password for illegal user mark from ::ffff:202.157.186.162 port 53409 ssh2
May  4 08:32:04 linux sshd[19154]: Illegal user sin from ::ffff:202.157.186.162
May  4 08:32:06 linux sshd[19154]: Failed password for illegal user sin from ::ffff:202.157.186.162 port 53610 ssh2
May  4 08:32:09 linux sshd[19156]: Illegal user richer from ::ffff:202.157.186.162
May  4 08:32:11 linux sshd[19156]: Failed password for illegal user richer from ::ffff:202.157.186.162 port 53814 ssh2
May  4 08:32:14 linux sshd[19158]: Illegal user fluffy from ::ffff:202.157.186.162
May  4 08:32:16 linux sshd[19158]: Failed password for illegal user fluffy from ::ffff:202.157.186.162 port 54022 ssh2
May  4 08:32:18 linux sshd[19160]: Illegal user gold from ::ffff:202.157.186.162
May  4 08:32:21 linux sshd[19160]: Failed password for illegal user gold from ::ffff:202.157.186.162 port 54220 ssh2
May  4 08:32:25 linux sshd[19162]: Failed password for tomcat from ::ffff:202.157.186.162 port 54430 ssh2
May  4 08:32:28 linux sshd[19164]: Illegal user cosinus from ::ffff:202.157.186.162
May  4 08:32:30 linux sshd[19164]: Failed password for illegal user cosinus from ::ffff:202.157.186.162 port 54632 ssh2

--- continues for a long time -- until ------

May  4 13:06:46 linux sshd[24894]: Failed password for illegal user Aaron from ::ffff:209.76.72.12 port 50619 ssh2
May  4 13:06:47 linux sshd[24896]: Illegal user Aba from ::ffff:209.76.72.12
May  4 13:06:49 linux sshd[24896]: Failed password for illegal user Aba from ::ffff:209.76.72.12 port 51060 ssh2
May  4 13:06:50 linux sshd[24898]: Illegal user Abel from ::ffff:209.76.72.12
May  4 13:06:52 linux sshd[24898]: Failed password for illegal user Abel from ::ffff:209.76.72.12 port 51113 ssh2
May  4 13:06:53 linux sshd[24900]: Illegal user Jewel from ::ffff:209.76.72.12
May  4 13:06:55 linux sshd[24900]: Failed password for illegal user Jewel from ::ffff:209.76.72.12 port 51604 ssh2
May  4 13:06:58 linux sshd[24902]: Failed password for sshd from ::ffff:209.76.72.12 port 51659 ssh2
May  4 13:06:58 linux sshd[24904]: Illegal user users from ::ffff:209.76.72.12
May  4 13:07:01 linux sshd[24904]: Failed password for illegal user users from ::ffff:209.76.72.12 port 52118 ssh2
May  4 13:07:01 linux sshd[24906]: Illegal user admins from ::ffff:209.76.72.12
May  4 13:07:04 linux sshd[24906]: Failed password for illegal user admins from ::ffff:209.76.72.12 port 52516 ssh2
May  4 13:07:04 linux sshd[24908]: Illegal user admins from ::ffff:209.76.72.12
May  4 13:07:07 linux sshd[24908]: Failed password for illegal user admins from ::ffff:209.76.72.12 port 52610 ssh2




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