---
title: "Discussion on \"CYBER SECURITY (Penetration Testing Prerequisites) 1.8 Firewall and Network defense\" | Hashnode"
description: "Discussion on \"CYBER SECURITY (Penetration Testing Prerequisites) 1.8 Firewall and Network defense\". -There are many different appliances on the market that a system administrator can use to protect the network.\n-These devices use different techniques and work on different\nlayers to perform access control, attack detection, and\nprevention.\nSo, How D..."
url: "https://hashnode.com/posts/cyber-security-penetration-testing-prerequisites-18-firewall-and-network-defense/6243f24407df12dd7c50cdd4"
---

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# [CYBER SECURITY (Penetration Testing Prerequisites) 1.8 Firewall and Network defense](https://mohamed-abdalla.com/cyber-security-penetration-testing-prerequisites-18-firewall-and-network-defense?utm_source=hashnode&utm_medium=feed)

\-There are many different appliances on the market that a system administrator can use to protect the network. -These devices use different techniques and work on different layers to perform access control, attack detection, and prevention. So, How D...

Mar 30, 2022 · 4 min read · mohamed-abdalla.com  
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## Written by

[Mohamed Abdalla Ibrahim](https://hashnode.com/@x0)

@x0 · Kuwait

  
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Cybersecurity Analyst

Welcome to my blog! My name is Mohamed Abdalla Ibrahim and I am a Cyber Security Specialist and IS security enthusiast. With over 15 years of experience in an enterprise environment, I have a strong understanding of the business risks related to IT. I am always seeking out the newest technologies to upgrade my knowledge and enhance my skills and qualifications in my field. I am self-motivated and have strong communication skills, and my greatest goal is to be a distinguished source of innovation in the IT field. Thank you for visiting my blog, and I hope you find the information and resources on this site helpful and informative

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