Learn more about technologyandthefuture with this collection
How to build trust in a virtual environment
How to manage remote teams effectively
How to assess candidates remotely
How The Technology Works
When a firewall checks if data can enter your network, it'll read a message that comes with it called metadata. This will list a string of numbers indicating where the data has come from (known as the source address), where it's going (the 'destination address' aka your PC) and over which port.
Whether the data has permission will all depend on a set of rules known as a protocol. These rules can be set to prevent you — or any other particular user – from uploading certain files to the internet.
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The Firewall
A firewall is an online security measure to protect your computer from viruses and other malicious attacks.
You can use the internet to communicate with around 4.9 billion people worldwide.
The...
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Data Packets: The Atoms Of The Internet
A video file isn't sent from YouTube to your computer as a single file. Instead, it's broken down into smaller pieces called data packets, which reassemble once you receive them, according to the website security company Cloudflare. Packet-filtering firewalls will check each data packet to make s...
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A Virtual Toll Gate
A firewall works at your computer's ports. When we're talking about computer networking, a port isn't the same as a jack or socket you plug your monitor into. Rather it's a virtual entry point where your computer exchanges information with other networks.
Every computer has lots of ports, ...
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