Arik Chakma
274082fd77
* refactor: clean to roadmap content * refactor: move shared helpers into scripts/lib
10 lines
1.1 KiB
Markdown
10 lines
1.1 KiB
Markdown
# Firewall
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A firewall is a network security device that monitors and filters incoming and outgoing network traffic based on an organization's previously established security policies. It acts as a barrier between a trusted internal network and untrusted external networks, such as the internet, by analyzing data packets to determine whether they should be allowed or blocked. Setting up a firewall involves defining rules that specify which ports, protocols, and IP addresses are permitted to communicate with your infrastructure, effectively minimizing the surface area for potential unauthorized access.
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Visit the following resources to learn more:
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- [@article@What is Firewall?](https://www.checkpoint.com/cyber-hub/network-security/what-is-firewall/)
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- [@article@Types of Firewall](https://www.cisco.com/c/en_in/products/security/firewalls/what-is-a-firewall.html)
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- [@article@Why do we need Firewalls?](https://www.tutorialspoint.com/what-is-a-firewall-and-why-do-you-need-one)
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- [@video@Firewalls and Network Security - SimpliLearn](https://www.youtube.com/watch?v=9GZlVOafYTg) |