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TWFILES(5) File Formats Manual TWFILES(5) NAME twfiles - overview of files used by Tripwire and file backup process DESCRIPTION Configuration File default: /usr/local/etc/tripwire/tw.cfg The configuration file stores system-specific information, such as the location of Tripwire data files. The configuration settings are gener- ated 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: /usr/local/etc/tripwire/tw.pol The policy file consists of a series of rules specifying the system ob- jects 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 dis- cussion. 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)-$(DATE).twr Once the above three files have been created, Tripwire can run an in- tegrity check and search for any differences between the current system and the data stored in the "baseline" Tripwire database. This informa- tion is archived into report files, a collection of rule violations discovered during an integrity check. With the appropriate settings, a report can also be emailed to one or more recipients. See the trip- wire(8) and twprint(8) man pages for information on creating and print- ing report files. Key Files defaults: /usr/local/etc/tripwire/site.key and /usr/local/etc/trip- wire/$(HOSTNAME)-local.key It is critical that Tripwire files be protected from unauthorized ac- cess--an attacker who is able to modify these files can subvert Trip- wire operation. For this reason, all of the above files are signed us- ing 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 Trip- wire 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 in- tegrity check reports. See the twadmin(8) man page for more informa- tion on keys. File Backup To prevent the accidental deletion of important data, Tripwire automat- ically 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 ex- ists, 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 changed. VERSION INFORMATION This man page describes Tripwire 2.4. AUTHORS Tripwire, Inc. COPYING PERMISSIONS Permission is granted to make and distribute verbatim copies of this man page provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this man page under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a per- mission notice identical to this one. Permission is granted to copy and distribute translations of this man page into another language, under the above conditions for modified versions, except that this permission notice may be stated in a trans- lation approved by Tripwire, Inc. Copyright 2000-2019 Tripwire, Inc. Tripwire is a registered trademark of Tripwire, Inc. in the United States and other countries. All rights reserved. SEE ALSO twintro(8), tripwire(8), twadmin(8), twprint(8), siggen(8), twcon- fig(4), twpolicy(4) Open Source Tripwire 2.4 04 Jan 2018 TWFILES(5)
NAME | DESCRIPTION | VERSION INFORMATION | AUTHORS | COPYING PERMISSIONS | SEE ALSO
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