Learn what intrusion detection and prevention systems are. Jungwoo describes their roles in network security and how intrusion detection systems are different from intrusion prevention systems. He also talks about the two primary mechanisms behind intrusion detection and prevention systems: signature and behavior-based approaches.
- [Instructor] The best defense in network security…is to constantly monitor for suspicious activities…to either prevent attacks or stop them…before they incur significant damage.…When a system passively observes network traffic…to recognize a security threat…it is labeled as an intrusion detection system, or IDS.…If the same system has an additional ability…to drop network traffic based on it's observation…it is called an intrusion prevention system, or IPS.…
You can configure a system to either act…as an IDS or IPS according to your needs.…Many traditional IDS's rely…on signature-based detection approach.…They look for a static pattern in network traffic…and find a match from a database…of known malicious signatures.…Since certain network attacks always begin…with sending a certain big pattern,…signature-based IDS's are looking for a string…consisting of binary numbers…constituting the network attack traffic.…
One of the major weaknesses in this method…is that unknown patterns cannot be detected…so any novel attacks can get through.…
- Network security concepts
- The basic functions of a firewall
- Intrusion detection and prevention systems
- Using network data to improve security
- Using log servers to collect data
- Collecting application data
- Collecting OS data
- Network forensics
- Network security visualization
Skill Level Intermediate
1. Network Security Review
2. Network Data Sources
3. Data Collection
4. Data Analytics
Network forensics2m 25s
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