What is firewalls in computer security?

In computer security there are so may tools and software that we use to protect computers, networks, and phones.

And today we are going to talk about firewalls.

In this post, you'll learn:

• what is firewalls?
• what does firewalls do?
• what are firewalls types?

So let’s dive into it.

what is firewalls in computer?

In computer security a firewall is device, or software that monitors the Incoming and outgoing network traffic. Its main rule is to allow non-threatening traffic in, and to keep dangerous traffic out the network.

A firewall sits as a gateway between a private internal network and the public Internet.

what does firewalls do?

A firewall is a security system that block the dangerous traffic from coming to the network, or to your computer, and allow the non-dangerous traffic to come inside the network, or to your computer.

It can detect and block malware, and other types of dangerous security risks.

Firewalls types:

There are many types of firewalls, and here is list of them.

Packet-filtering Firewalls

Circuit-level Gateways

Application-level Gateways (Proxy Firewalls)

Stateful Multi-layer Inspection (SMLI) Firewalls

Next-generation Firewalls (NGFW)

Threat-focused NGFW

Network Address Translation (NAT) Firewalls

Cloud Firewalls

Unified Threat Management (UTM) Firewalls

You can find a lot of resourse abou them online.