Tripwire is a free and open-source software tool that monitors key attributes of files to detect changes from an established baseline. It creates a database of original file attributes and then constantly checks for any unauthorized changes, reporting them to the user. Tripwire can increase security, accountability, and visibility of changes while also ensuring availability through rapid detection and recovery. However, it has some limitations with frequently changing files and requires more effort to install and maintain.

1. ishaque

2.  What is Tripwire?
 How does Tripwire Works?
 Tripwire Program Inputs
 Applications
 Tripwire for Network Devices
 Tripwire Manager
 What is the benefit of Tripwire?
 Drawbacks
 References

3.  Reliable intrusion detection system.
 It is a free and open-source software tool.
that checks to see what changes have been
made in your system.
 Pinpoints, notifies, determines the nature,
and provides information on the changes on
how to manage the change.
 Mainly monitors the key attributes(like binary
signature, size and other related data)
of your files.

4.  Changes to a file can be made without
changing its length or checksum!
 Changes are compared to the established
good baseline..
 Security not only means protecting your
system against various attacks but also
means taking quick and decisive actions
when your system is attacked.

6.  First, a baseline database is created storing the
original attributes like binary values in registry.
 First of all we must find out whether our system is
attacked or not,
 The TripWire software constantly checks the
systemlogs to check if any unauthorized changes
were made.
 If so, then it reports to the user.
 User can then undo those changes to revert the
system back to the original state

7.  Configuration file (tw.config)
◦ list of files & directories to be monitored
◦ their associated selection mask (list attributes that can
safely be ignored)
 Database file --describes each “file” –
automatically generated
◦ set of file names, inode attribute values, signature
info., associated tw.config entry
tw.config
file
old
database
Files residing on system

8.  Tripwire for Servers(used as software).
 Tripwire for Host Based Intrusion Detection
System(HIDS) and also for Network Based
Intrusion Detection System (NIDS).
 Tripwire for Network Devices like Routers,
Switches etc.

9.  It Can be installed on any server that needs to be monitored
for any changes.
 Typical servers include mail servers, web servers, firewalls,
transaction server, development server.
 A Host-based Intrusion Detection System (HIDS), as a special
category of an Intrusion-Detection System, focuses its
monitoring and analysis on the internals of a computing
system rather than on its external interfaces (as a Network
Intrusion Detection System (NIDS) would do)
.

10.  It is used for network devices like routers,
switches, firewall, etc.
 Tripwire for network devices maintains a log
of all significant actions including adding and
deleting nodes, rules, tasks and user
accounts.

11. There are two types of Tripwire Manager
 Active Tripwire Manager
 Passive Tripwire Manager
 This active Tripwire Manager gives a user the
ability to update the database, schedule
integrity checks, update and distribute policy
and configuration files and view integrity
reports.
 The passive mode only allows to view the
status of the machines and integrity reports.

12.  Increase security: - Immediately detects and
pinpoints unauthorized change.
 Instill Accountability :- Tripwire identifies and
reports the sources of change.
 Gain Visibility:- Tripwire software provides a
centralized view of changes across the
enterprise infrastructure
 Ensure Availability:- Tripwire software
reduces troubleshooting time, enabling rapid
discovery and recovery.

13.  Ineffective when applied to frequently
changing files.
 Higher learning curve to install, edit, and
maintain the software.
 Cost Effective

14.  Although having some limitations ;Tripwire is a
reliable intrusion detection system.
 It is a software that can be installed in any type of
system where damaged files are to be detected.
 The main attractive feature of this system is that
the software generates a report about which file
have been violated, when the file have been
violated and also what in the files have been
changed.

15.  www.google.com
 www.wikipedia.com
 www.studymafia.org