Intruder Prevention System (IPS)

IPSs present a significant improvement over traditional firewall technologies, when making access control decisions based on traffic content, rather than IP addresses or ports. Some time later, some IPS were marketed by the One Secure company, which was finally acquired by NetScreen Technologies, which in turn was acquired by Juniper Networks in 2004. Since the IPS were literal extensions of the IDS systems, they continue in relation.

Functioning


Among its main functions are not only the identification of malicious activity, but the attempt to stop this activity.

The administrator must be alerted to the detection of intrusions or malicious activity, while it is exclusive to an Intruder Prevention System (IPS) to establish security policies to protect the computer or the network from an attack. that an IPS protects a network or computer proactively while an IDS reactively does it.



IPSs are classified into four different types:

1. Network-based Lan (NIPS): monitor the lan network for suspicious network traffic by analyzing activity by lan communication protocol.



2. Wireless Network Based (WIPS): monitor the wireless network for suspicious traffic by analyzing the activity by wireless communication protocol.



3. Network Behavior Analysis (NBA): Examines network traffic to identify threats that generate unusual traffic, such as denial of service attacks, certain forms of malware and network policy violations.



4. Host-based (HIPS): It is done by installing software packages that monitor a single host for suspicious activity.



Intrusion Detection and Prevention System Categorize the way they detect malicious traffic:

Signature-based detection: as an antivirus does.

Policy-based detection: IPS requires security policies to be declared very specifically.

Detection based on anomalies: depending on the pattern of normal traffic behavior.

IDS vs. IPS: what's the difference?

Intrusion Detection Systems (IDS) analyze network traffic for signatures that correspond to known cyber attacks. Intrusion Prevention Systems (IPS) also analyze packets, but they can prevent these packets from being delivered based on the types of attacks detected - helping to stop the attack.

How Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS) work

Both are part of the network infrastructure and compare network packets to a database of cyber threats containing known signatures and flag all corresponding packets.

The main difference between them is that IDS is a monitoring system, while IPS is a control system.

IDS does not alter network packets in any way since IPS prevents the packet from being delivered based on its content, just as a firewall prevents traffic by IP address.

Intrusion Detection Systems (IDS): analyzes and monitors network traffic for signs indicating that attackers are using a known threat to infiltrate and steal network data. IDS systems compare current network activity to a known threat database to detect various types of behavior, such as security policy violations, malware, and port scans.
Intrusion Prevention Systems (IPS) Live in the same area of ​​the network as a firewall, between the outside world and the internal network. IPS proactively deny network traffic based on a security profile, if that packet represents a known security threat.

Many IDS / IPS vendors integrate newer IPS systems with firewalls to create UTM (Unified Threat Management) technology that combines the functionality of these two similar systems in a single unit. Some systems provide IDS and IPS functionality in the same unit.

The differences between IDS and IPS
Both read network packets and compare the content to a database of known threats. The main difference between them is what happens next. IDSs are detection and monitoring tools that do not act on their own. IPSs are control systems that accept or reject a package based on a set of rules.

IDS requires a human being, or another system, to analyze the results and determine what actions to take next, which can be a full-time job, depending on the amount of network traffic generated each day. The purpose of the IPS, on the other hand, is to take dangerous packages and stop them before they reach the target. It is more passive than an IDS, requiring only that the database be updated regularly with new threat data.