Published on (  See this if you're having trouble printing code
examples  FreeBSD Basics File Integrity and Anti-DDoS Utilities
by Dru Lavigne  In my previous article, I walked you through the
usage of tripwire. While tripwire is the most well-known of the
file integrity utilities, it is not the only utility available
for this purpose.  All file integrity utilities create a
database of hashes representing a baseline of the files on a
system. For this reason, the best time to create the database is
just after installing and configuring the system and before
connecting it to the Internet. When deciding upon which utility
to use, the following factors come into play:  I've summarized
the license and algorithms for three utilities in the following
table:  tripwireGPL, tripwireMD5, SHA, HAVAL, CRC32   As for the
ease of use and complexity of the configuration files, let's
check out aide and yafic and see how they compare to tripwire.
I'll start with aide:  $ cd /usr/ports/security/aide $ make
install clean  Relat