Introduction to Firewall: Types and their working, Design Principles and Limitations

Thanks for clicking CSEMA Videos

In this video we learn about Firewall, How it works, Types of Firewall, Design Principles and Limitations of Firewall.

Firewall is a network security System designed to prevent unauthorized access to or from a private network.
OR
It used to monitors incoming and outgoing packets and It can be Hardware or Software type firewall.

Firewall can be categorized into four parts
(i). Packet Filtering Firewall
(ii). Application level Firewall
(iii). Circuit level Firewall and
(iv). Hybrid Firewall