Firewall

Difference between IDS, IPS and Firewall.

refer: https://www.linkedin.com/pulse/difference-between-ids-ips-firewall-possible-mondal-ceh-jncia-/

Firewall - a traditional firewall is the rules-based engine that analyzes packet headeron protocol type, source address, destination address, source port, and/or destination port. If the Packets are not match with firewall rules, packets will be dropped. There is something called a Next Generation Firewall (NGFW).This can make a single device act as both a traditional Firewall and IPS.

Intrusion Prevention System (IPS)- The IPS sits between your firewall and the rest of your network. Because, it can stop the suspected traffic from getting to the rest of the network. The IPS monitors the inbound packets and what they are really being used for before deciding to let the packets into the network. An IPS will inspect content of the request and be able to drop, alert, or potentially clean a malicious network request based on that content. The determination of what is malicious is based either on behaviour analysis or through the use of signatures.