Getting started with OSSEC (Intrusion Detection System)

1. How do I set up Ossec?
2. Is Ossec a SIEM?
3. What can Ossec detect?
4. What type of intrusion detection system is the Ossec?
5. Where is Ossec output stored?
6. What port does Ossec use?
7. What is the best SIEM solution?
8. Is splunk a SIEM?
9. Is AlienVault a SIEM?
10. Is Ossec any good?
11. What is difference between HIDS and NIDS?
12. How often does Ossec check for new files?

How do I set up Ossec?

Follow the instructions in How To Set Up a Firewall Using Iptables on Ubuntu 14.04 to set up iptables on both servers.

1. Step 1 — Download and Verify OSSEC on the Server and Agent. ...
2. Step 2 — Install the OSSEC Server. ...
3. Step 3 — Configure the OSSEC Server. ...
4. Step 4 — Install the OSSEC Agent.

Is Ossec a SIEM?

OSSEC. Technically, OSSEC is an open-source intrusion detection system rather than a SIEM solution. However, it still offers a host agent for log collection and a central application for processing those logs. Overall, this tool monitors log files and file integrity for potential cyber attacks.

What can Ossec detect?

OSSEC Features

• Log based Intrusion Detection (LIDs) Actively monitors and analyzes data from multiple log data points in real-time.
• Rootkit and Malware Detection. Process and file level analysis to detect malicious applications and rootkits.
• Active Response.

What type of intrusion detection system is the Ossec?

OSSEC (Open Source HIDS SECurity) is a free, open-source host-based intrusion detection system (HIDS). It performs log analysis, integrity checking, Windows registry monitoring, rootkit detection, time-based alerting, and active response.

Where is Ossec output stored?

All logs are stored in subdirectories of /var/ossec/logs . OSSEC's log messages are stored in /var/ossec/logs/ossec.

What port does Ossec use?

The OSSEC manager listens on UDP port 1514.

What is the best SIEM solution?

SolarWinds and Splunk are the top solutions for SIEM. McAfee ESM is one of the popular SIEM software and has features like prioritized alerts and dynamic presentation of data. ArcSight ESM is good for sources ingestion and is available through the appliance, software, AWS, and Microsoft Azure.

Is splunk a SIEM?

Splunk Enterprise Security:

it is a SIEM system that makes use of machine-generated data to get operational insights into threats, vulnerabilities, security technologies, and identity information.

Is AlienVault a SIEM?

AlienVault® OSSIM™, Open Source Security Information and Event Management (SIEM), provides you with a feature-rich open source SIEM complete with event collection, normalization and correlation.

Is Ossec any good?

Ossec is a good and easy start for security compliance when you want to deploy log analysis.

What is difference between HIDS and NIDS?

NIDS works in real-time, which means it tracks live data and flags issues as they happen. On the other hand, HIDS examines historical data to catch savvy hackers that use non-conventional methods that might be difficult to detect in real-time.

How often does Ossec check for new files?

Out of the box, an installation of OSSEC is configured to monitor for changes and modification every 20 hours in the following system directories: /etc , /usr/bin , /usr/sbin , /bin , /sbin , and /boot . In this step, we'll modify the configuration so that some of those changes are reported in real time.