[CentOS] A new attack
John Hinton
webmaster at ew3d.comFri Nov 10 14:45:45 UTC 2006
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Log report is reporting a lot of these lately.. following is just a short snippet from the beginning on one server. WARNING!!!! Possible Attack: Attempt from 104.29.broadband2.iol.cz [83.208.29.104] with: command=HELO/EHLO, count=3 : 1 Time(s) Attempt from 106.7.broadband7.iol.cz [88.102.7.106] with: command=HELO/EHLO, count=3 : 1 Time(s) Attempt from 106.74.broadband5.iol.cz [88.100.74.106] with: command=HELO/EHLO, count=3 : 1 Time(s) Attempt from 126.239.broadband7.iol.cz [88.102.239.126] with: command=HELO/EHLO, count=3 : 1 Time(s) Attempt from 144.Red-80-34-151.staticIP.rima-tde.net [80.34.151.144] with: command=HELO/EHLO, count=3 : 1 Time(s) Could anyone expand on what these folks are actually doing? And if I should be concerned? This is happening on both my CentOS 3 and 4 systems, all running Sendmail. Thanks, John Hinton
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