Protecting Linux against automated attackers

by on September 25, 2005 · 1 comment· LAST UPDATED September 25, 2005

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So you wanna block script kiddies? Most of the new crackers who wanna crack your server they use port scanners, dictionary attacks and what not... Blocking them automatically is the subject of this article.

It discuss how to protect Linux against automated attacks using tools. It is worth to read it. Before reading this I had my small perl script which is used to monitor /var/log/secure and if more login failed attempt found it will send an email to us and then we use to block IPs at router/server itself.

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{ 1 comment… read it below or add one }

1 Thomas Scott January 29, 2007 at 1:55 am

100 years ago , bankers solved
the problem ..
Hacker succeeds in guessing a P.W.
but he gets one chance to
guess a “scratch” number ,
on a users list .
Also , if SU needs to suspend
that P.W. , its trivial .
SU hands out lists of
scratch numbers to remote users .
————-
Admins create scripts , that make them
look like Wizards …
Why learn Linux , if you dont have to ?
There is no faster way to
work Linux , than to forget the syntax .

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