💠 What is a Firewall | Infosecwithme

💠 What is a Firewall?
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⚜ A firewall is a software system that simply allows us to manage and filter all incoming and outgoing traffic between 2 networks or computers in the same network.

⚜ If the incoming or outgoing traffic complies with a series of Rules that we can specify, then the traffic can access or leave our network or computer without any restriction. In case the traffic not complying with the rules the incoming or outgoing traffic will be blocked.

⚜ Therefore from the definition, we can ensure that with a well-configured firewall we can simply prevent unwanted intrusions in our network and computer as well as block certain type of outgoing traffic from our computer or our network as well.

💠 What does a Firewall serve?

⚜ Basically, the function of a firewall is to protect individual computers, servers or networked equipment against unwanted access by intruders who can steal confidential data, lose essential information or even deny services in our network as well.

⚜ Hence, it is clear that it is highly recommended that everyone should use a firewall for the following reasons:-

🌀 Preserve our security and privacy.

🌀 Protect our home or business network.

🌀 Protect the information stored in our network, servers or computers.

🌀 Avoid the intrusions of unwanted users (both hackers and users belonging to our same network) in our network and computer.

🌀 Avoid possible denial of service attacks.

Hence, all these points simply justified that a properly configured firewall can simply protect us against attacks such as IP address spoofing, Attacks Source Routing, and much more.

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