Project Pages for Tripwire Open Source:
http://sourceforge.net/projects/tripwire. The place to obtain the very latest Tripwire Open Source code and documentation.
Tripwire Open Source Manual and Tripwire Open Source Reference Card:
http://prdownloads.sourceforge.net/tripwire/tripwire-2.3.0-docs-pdf.tar.gz
. required reading in PDF format. If this link doesn't work, try
http://sourceforge.net/project/showfiles.php?group_id=3130.
Tripwire Open Source: http://www.tripwire.org/.
Binaries for Linux available here.
Download Site for Tripwire Academic Source Release:
http://www.tripwire.com/downloads/tripwire_asr/index.cfml?
Advanced Intrusion Detection Environment (AIDE):
http://www.cs.tut.fi/~rammer/aide.html
FCheck:
http://www.geocities.com/fcheck2000/.
A 100% Perl and extremely portable integrity checker.
“Tripwire—The Only Way to Really Know”:
http://securityportal.com/topnews/tripwire20000711.html.
Article on using Tripwire Academic Source Release, by Jay Beale (yep, he's that Bastille-Linux guy).
“Design and Implementation of the Second Extended Filesystem”:
http://web.mit.edu/tytso/www/linux/ext2intro.html.
Excellent paper on the Linux ext2 filesystem by Rémy Card, Theodore Ts'o, and Stephen Tweedie. The section “Basic File System Concepts” is of particular interest to Tripwire users.