What is a firewall?
A firewall is a security device that monitors network traffic. It checks incoming and outgoing data on your network. ️️
Types of firewalls:

Hardware firewalls: Physical devices that protect entire networks
Software firewalls: programs that protect individual devices

How firewalls work:

You look at every single data element
They use rules to decide whether the data is secure
They let secure data through and block unsafe data ️‍️

Why firewalls are important:

They prevent unauthorized access
They protect against cyber attacks
You protect your data

Firewalls are like guards for your network. They ensure that only the right information comes in and goes out. ‍️
Understanding firewalls is key to network security. They are an essential tool for protecting against online threats.
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