What is Tripwire ?
- Reliable intrusion detection system.
- Tool that checks
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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.
- Changes are compared to the established good baseline.
- Security is compromised, if there is no control over the various operations taking place.
How does it works:
- First, a baseline database is created, storing the original attributes like binary values in registry.
- If the host computer is intruded, the intruder changes these values to go undetected.
- The TripWire software constantly checks the system logs 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.
Where it is used?
- Tripwire for Servers(TS) is software used by servers.
- 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.
- It is also used for Host Based Intrusion Detection System(HIDS) and also for Network Intrusion Detection System(NIDS).
- It is used for network devices like routers, switches, firewall, etc.
- If any of these devices are tampered with, it can lead to huge losses for the Organization that supports the network.
Tripwire for Network Devices:
- Tripwire for network devices maintains a log of all significant actions including adding and deleting nodes, rules, tasks and user accounts.
- Automatic notification of changes to your routers, switches and firewalls.
- Automatic restoration of critical network devices.
- Heterogeneous support for today’s most commonly used network devices.
Tripwire for servers:
- For the tripwire for server’s software to work two important things should be present –the policy file and the database.
- The Tripwire for server’s software conducts subsequent file checks automatically comparing the state of system with the baseline database.
- Any inconsistencies are reported to the Tripwire manger and to the host system log file.
- Reports can also be emailed to an administrator.
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.
How to Install and Use:
- Install Tripwire and customize the policy file.
- Initialize the Tripwire database.
- Run a Tripwire integrity check.
- Examine the Tripwire report file.
- Take appropriate security measures.
- Update the Tripwire database file.
- Update the Tripwire policy file.
What is the benefits of Tripwires:
Increase security: Immediately detects and pinpoints unauthorized changes.
Instill Accountability: Tripwire identifies and reports the sources of changes.
Gain Visibility: Tripwire software provides a centralized view of changes across the enterprise infrastructure and supports multiple devices from multiple vendors.
Ensure Availability: Tripwire software reduces troubleshooting time, enabling rapid discovery and recovery. Enables the fastest possible restoration back to a desired, good state.
What are the features of tripwire?
The main attractive feature of this system is that the
- Software generates a report about which file has been violated, when the file has been violated and also what information in the files have been changed.
- If properly used it also helps to detect who made the changes.
- Proper implementation of the system must be done with a full time manager and crisis management department.