Man Linux: Main Page and Category List


       twfiles - overview of files used by Tripwire and file backup process


   Configuration File
       default: /etc/tripwire/tw.cfg
       The configuration file stores system-specific information, such as the
       location of Tripwire data files. The configuration settings are
       generated during the installation process, but can be changed by the
       system administrator at any time.  See the twconfig(4) man page for a
       more complete discussion.

   Policy File
       default: /etc/tripwire/tw.pol
       The policy file consists of a series of rules specifying the system
       objects that Tripwire should monitor, and the data for each object that
       should be collected and stored in the database file.  Should unexpected
       changes occur, the policy file can describe the person to be notified
       and the severity of the violation.  See the policyguide.txt file in the
       policy directory and the twpolicy(4) man page for a more complete

   Database File
       default: /var/lib/$(HOSTNAME).twd
       The database file serves as the baseline for integrity checking.  After
       installation, Tripwire creates the initial database file, a "snapshot"
       of the filesystem in a known secure state.  Later, when an integrity
       check is run, Tripwire compares each system object described in the
       policy file against its corresponding entry in the database.  A report
       is created, and if an object has changed outside of constraints defined
       in the policy file, a violation is reported.  See the tripwire(8) and
       twprint(8) man pages for more information on creating and maintaining
       database files.

   Report Files
       default: /var/lib/tripwire/report/$(HOSTNAME)-$(DATE).twr
       Once the above three files have been created, Tripwire can run an
       integrity check and search for any differences between the current
       system and the data stored in the "baseline" Tripwire database.  This
       information is archived into report files, a collection of rule
       violations discovered during an integrity check.  With the appropriate
       settings, a report can also be emailed to one or more recipients.  See
       the tripwire(8) and twprint(8) man pages for information on creating
       and printing report files.

   Key Files
       defaults: /etc/tripwire/site.key and
       It is critical that Tripwire files be protected from unauthorized
       access‐‐an attacker who is able to modify these files can subvert
       Tripwire operation.  For this reason, all of the above files are signed
       using public key cryptography to prevent unauthorized modification.
       Two separate sets of keys protect critical Tripwire data files.  One or
       both of these key sets is necessary for performing almost every
       Tripwire task.

       The site key is used to protect files that could be used across several
       systems.  This includes the policy and configuration files.  The local
       key is used to protect files specific to the local machine, such as the
       Tripwire database.  The local key may also be used for signing
       integrity check reports.  See the twadmin(8) man page for more
       information on keys.

   File Backup
       To prevent the accidental deletion of important data, Tripwire
       automatically creates backup files whenever any Tripwire file is
       overwritten. The existing file will be renamed with a .bak extension,
       and the new version of the file will take its place.  Only one backup
       copy for each filename can exist at any time.  If a backup copy of a
       file already exists, the older backup file will be deleted and replaced
       with the newer one.

       File backup is an integral part of Tripwire, and cannot be removed or


       This man page describes Tripwire 2.3.1.


       Tripwire, Inc.


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       Permission is granted to copy and distribute translations of this man
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       translation approved by Tripwire, Inc.

       Copyright 2000 Tripwire, Inc. Tripwire is a registered trademark of
       Tripwire, Inc. in the United States and other countries. All rights


       twintro(8), tripwire(8), twadmin(8), twprint(8), siggen(8),
       twconfig(4), twpolicy(4)

                                  1 July 2000