Intrusion prevention system (IPS) helps in better network security by identifying any potential threat at the right time and taking action against them swiftly. An intrusion prevention system monitors network security throughout to find threats, if any.
It works by taking immediate action against an illegitimate traffic as per rules defined by the network administrator. An intrusion prevention system can use different detection mechanisms like generic pattern matching, packet anomaly detection, TCP connection analysis, address matching, etc. to detect the intrusion of attackers in a network.
A reliable intrusion prevention system from brands like McAfee, IBM and Huawei works in a way that there is little or no need of human intervention for keeping the network safe. Also, they segregate efficiently between legitimate user traffics and attackers to take action accordingly.
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An Intrusion Prevention System is a network security technology that helps in identifying the potential threats. An Intrusion Prevention System offers the proactive detection and prevention against unwanted traffic by preventing it to reach to its intended victim. It basically examines the network traffic flows to detect and prevent vulnerability exploits by the threats as vulnerable exploits usually come in the form of malicious inputs. It analyses the inbound and outbound network traffic for suspicious activities and perform appropriate actions instantaneously to prevent the intruders from entering into the internal network.
Intrusion Prevention System (IPS) helps in delivering the secure platform to the network as it proactively responds to any unauthorized threats or unwanted traffic. It has a capability to detect the threat instantly. An Intrusion Prevention System works in in-line mode. It contains a sensor that is located directly in the actual network traffic route, which deep inspects all the network traffic as the packets passes through it. The in-line mode allows the sensor to run in prevention mode where it performs real-time packet inspection. Because of this, any identified suspicious or malicious packets are dropped immediately.
The functions of an Intrusion Prevention System are as follows:-
The main difference between Intrusion Prevention System (IPS) and an Intrusion Detection System (IDS) is that an IPS is implemented in-line whereas and IDS sits off to the side of network and monitors at many different points and provide visibility into the security posture of the network.
There are four different approaches through which IPS secures the network:-
The main category of Intrusion Prevention System is:-
There are various companies which provides the IPS Solutions:-
In Signature-Based approach, predefined signatures or patterns of well-known network attacks are encoded into the IPS device by its vendors. The predefined patterns are then used to detect an attack by comparing the patterns that an attack contains, against the ones that are stockpiled in IPS. This method is also referred to as Pattern-Matching approach.
In Anomaly-Based approach, if any abnormal behavior or activity is detected in the network, an IPS blocks its access to the target device as per the criteria defined by the administrators. This method is also known as Profile-based approach.
In Policy-Based approach, administrators configure security policies into an IPS device according to their network infrastructure and organization policies. If an activity attempts to violate the configured security policies, an IPS triggers an alarm to alert the administrators about the malicious activity.