Date: Fri, 9 Oct 2009 16:48:14 -0500 From: Adam Vande More <amvandemore@gmail.com> To: Aflatoon Aflatooni <aaflatooni@yahoo.com> Cc: freebsd-questions@freebsd.org Subject: Re: Security blocking question Message-ID: <6201873e0910091448h46c13ce4h2e9df8920a8fe27a@mail.gmail.com> In-Reply-To: <526808.11391.qm@web56207.mail.re3.yahoo.com> References: <526808.11391.qm@web56207.mail.re3.yahoo.com>
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On Fri, Oct 9, 2009 at 4:45 PM, Aflatoon Aflatooni <aaflatooni@yahoo.com>wrote: > Hi, > The production server that has a public IP address has SSH enabled. This > server is continuously under dictionary attack: > Oct 8 12:58:40 seven sshd[32248]: Invalid user europa from 83.65.199.91 > Oct 8 12:58:40 seven sshd[32250]: Invalid user hacked from 83.65.199.91 > Oct 8 12:58:40 seven sshd[32251]: Invalid user cop\r from 83.65.199.91 > Oct 8 12:58:41 seven sshd[32254]: Invalid user gel from 83.65.199.91 > Oct 8 12:58:41 seven sshd[32255]: Invalid user dork from 83.65.199.91 > Oct 8 12:58:41 seven sshd[32258]: Invalid user eva from 83.65.199.91 > Oct 8 12:58:41 seven sshd[32260]: Invalid user hacker from 83.65.199.91 > Oct 8 12:58:41 seven sshd[32261]: Invalid user copila\r from 83.65.199.91 > Oct 8 12:58:42 seven sshd[32265]: Invalid user dorna from 83.65.199.91 > Oct 8 12:58:42 seven sshd[32264]: Invalid user gelo from 83.65.199.91 > Oct 8 12:58:42 seven sshd[32268]: Invalid user evara from 83.65.199.91 > Oct 8 12:58:43 seven sshd[32270]: Invalid user hack from 83.65.199.91 > Oct 8 12:58:43 seven sshd[32271]: Invalid user copil\r from 83.65.199.91 > Oct 8 12:58:43 seven sshd[32274]: Invalid user Doubled from 83.65.199.91 > Oct 8 12:58:43 seven sshd[32275]: Invalid user gelos from 83.65.199.91 > Oct 8 12:58:44 seven sshd[32278]: Invalid user eve from 83.65.199.91 > > Is there a way that I could configure the server so that if there are for > example X attempts from an IP address then for the next Y hours all the SSH > requests would be ignored from that IP address? > There are only a handful of people who have access to that server. > > Thanks > > /usr/ports/security/denyhosts -- Adam Vande More
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