Some of the things we learned this week are:

• We learned about the differences between NIDS and NIPS. NIDS or network intrusion detection system examines the network traffic patterns to identify intrusions for an entire network. NIPS or network intrusion prevention system examines network traffic flows to detect and prevent vulnerability exploits.
• Rules used to detect the intrusions itself are always being updated by other researches themselves.
• There are two types of IDS (Intrusion Detection System), commercial (paid) and open-source (free). Examples of IDS are NGIPS, Extreme NIPS, Tipping Point IPS, etc.