And whenever we talk about encryption and security, the most important phenomenon that comes to our mind in the Firewall itself. So, in this answer we are going to get informed about what firewall is and why it is so necessary to know about types of firewall.
A firewall, as the name already suggest, is a wall between a system and network, which helps the system to stay protected from various kinds of attacks, spams, malwares and what not.
Different types of firewalls according to their functionality are:
Circuit-level gateways
Next-generation firewalls
Packet-filtering
Proxy gateway
Stateful inspection
All these firewalls are used in their respective manners and industries, as per the requirements of data as well as the network.
If you are beginner in the field of networking then your should start by knowing how a firewall works inside the system. And then you must choose which type of firewall is most suitable as per your requirements.
If you have any other question, we are here to help you anytime.