INTRUSION PREVENTION SYSTEM (IPS)
What is Intrusion Detection System?
Intrusion Prevention System (IPS) is a tool used to detect malicious activities occurring in the network and / or on the system. IPS can also be called intrusion detection and prevention system (IDPS). Intrusion Detection System works by detecting malicious activity, recording and reporting information about malicious activity, and trying to prevent it from happening.
IPS is an expanded system based on the capabilities of Intrusion Detection System (IDS), serving the primary purpose of monitoring network and system traffic. What makes IPS more advanced than IDS systems is that they are located directly on the network (inline) so they have the ability to prevent malicious activities from happening in real time.
How does Intrusion Detection System work?
The IPS is usually placed behind the Firewall and acts as a secondary filter against malicious activities. Since Intrusion Detection System is set to inline, they are capable of analyzing and performing automatic actions on all network traffic flows. These tasks include alerting administrators, dropping dangerous packets, suspending traffic coming from malicious source addresses, and restarting connections.
An effective IPS system should be kept to a minimum to minimize the interference of network access performance. In addition, IPS systems must be fast and accurate enough to detect malicious activity in real time and minimize false alarms.
Intrusion Detection System has many different ways to detect malicious activity, but the two main methods used are signature-based detection and detection based on anomaly ( anomaly-based detection).
The digital signature method uses a database of digits containing the unique identifiers that exist uniquely within the source code of the various intrusions. There are two types of digital-based detection methods for IPS systems: exploit-facing and vulnerability-facing. The exploit face method detects malicious activity based on common attack types, while the vulnerability face method tries to detect malicious activity by identifying specific vulnerabilities.
In addition, the anomalous detection method works by randomly sampling network traffic, and then comparing it with the baseline samples collected under normal conditions to identify the Intrusion attack sign.
How to choose IPS?
Market Intrusion Detection System has a very wide range of products to offer. This makes choosing the most suitable IPS system a pretty daunting task. In order to reduce the complexity of choosing the most suitable IPS system, Enterprises need to set a specific budget, identify the criteria that the IPS system will need to meet, and study the systems. Different IPS are available in the market.
However, it is important to note that Intrusion Detection System is a standalone system and not a complete security solution. Although IPS is a good technology it can help detect malicious activities on the network. However, a comprehensive and effective security strategy will need to leverage additional security technologies and solutions to protect data, secure endpoints, and assist in response. network security incidents.
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