--- title: Network Security description: Network security covers the policies, processes, and technologies used to protect network infrastructure from unauthorized access or abuse. Learners will understand how to implement firewalls, encryption, and intrusion detection systems to secure data in transit. category: programming-tech subcategory: technical-skills difficulty: beginner, intermediate, advanced url: /subject/network-security --- # Network Security Network security covers the policies, processes, and technologies used to protect network infrastructure from unauthorized access or abuse. Learners will understand how to implement firewalls, encryption, and intrusion detection systems to secure data in transit. ## Available Resources 3 Books • 6 Courses • 4 Websites ## Websites ### 1. Krebs on Security Brian Krebs's investigative blog covering data breaches, cybercrime operations, and payment fraud. Reading it regularly builds a working sense of how real attacks unfold, who runs them, and which defensive failures keep recurring across organizations. **Difficulty:** Beginner | **Price:** Free **Link:** https://krebsonsecurity.com/ **Tags:** cybercrime, data-breaches, threat-intelligence, security-journalism ### 2. OWASP Foundation Nonprofit foundation publishing open web application security standards and guides, including the OWASP Top Ten, the Application Security Verification Standard, the Web Security Testing Guide and the Cheat Sheet Series, used to identify, test for and prevent common web vulnerabilities. **Difficulty:** Intermediate | **Language:** English | **Price:** Free **Link:** https://owasp.org **Tags:** owasp-top-ten, application-security, secure-coding, vulnerability-testing, web-vulnerabilities ### 3. tryhackme.com TryHackMe is an online cybersecurity training platform offering hands-on labs, guided learning paths, and real-world scenarios (rooms and challenges) to practice penetration testing, web security, and network defense in an interactive, gamified environment. **Difficulty:** Intermediate | **Language:** English | **Price:** Free **Link:** https://tryhackme.com **Tags:** websites, technology-computer-science, computer-sciences ### 4. sans.org Sans.org is the official site of the SANS Institute, a leading provider of cybersecurity training and certification. It offers training courses, GIAC certifications, security research, white papers, and various resources for security professionals. **Difficulty:** Intermediate | **Language:** English | **Price:** Free **Link:** https://sans.org **Tags:** websites, technology-computer-science, cybersecurity ## Courses ### 1. Network Security Learn network security essentials with this Cisco course. Master concepts and skills to protect networks from threats. **Difficulty:** Beginner | **Price:** Free **Link:** https://www.netacad.com/courses/networking/network-security **Tags:** network-security, cisco, firewalls, threat-mitigation ### 2. CompTIA Security+ Certification Ace your CompTIA Security+ SY0-601 exam with Professor Messer's comprehensive network security video course! **Difficulty:** Beginner | **Price:** Free **Link:** https://www.professormesser.com/security-plus/sy0-601/sy0-601-video/ **Tags:** comptia-security-plus, certification, exam-prep, security-fundamentals ### 3. HackTheBox Academy Hack The Box's structured, module-based learning platform, separate from its labs. Modules pair written theory with browser-based target machines and end in graded skills assessments; job-role paths lead to the CPTS and CBBH certifications. Fundamentals tier is free, most modules cost cubes. **Difficulty:** Intermediate | **Price:** Free **Link:** https://academy.hackthebox.com/ **Tags:** penetration-testing, hands-on-labs, cpts, red-teaming, web-security ### 4. Data, Security, and Privacy **Author:** Tim Carrington Short UC Irvine course from the Introduction to Computer Information Systems specialization covering digital literacy, how security breaches happen, recognising system vulnerabilities, and protecting personal data, so learners can use the internet safely and reason about privacy and ethics. **Difficulty:** Beginner | **Language:** English | **Duration:** 3 weeks of study, 3 - 6 hours/week | **Price:** Free **Link:** https://www.coursera.org/learn/data-security-privacy **Tags:** digital-literacy, information-security, data-privacy, computer-information-systems, cyber-ethics ### 5. Cryptography I Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key. Throughout the course participants will be exposed to many exciting open problems in the field and work on fun (optional) programming projects. In a second course (Crypto II) we will cover more advanced cryptographic tasks such as zero-knowledge, privacy mechanisms, and other forms of encryption. **Difficulty:** Beginner | **Language:** English | **Price:** Free **Link:** https://www.coursera.org/learn/crypto **Tags:** courses, technology-computer-science, cryptocurrency--blockchain ### 6. Network Security If you are an associate-level cybersecurity analyst who is working in security operation centers, this course will provide introduction to network infrastructure and network security monitoring tools. By the end of the course, you will be able to: •Describe ACL operation when using the established option • Describe the purpose of Access List Control lists •Describe network address translation (NAT) fundamental concepts • Explain the NSM tools that are available to the network security analyst • Describe the three types of NSM tools used within the SOC (commercial, Open Source, or homegrown) • Describe network-based malware protection • Describe the benefits of load balancing and web application firewalls. • Describe AAA • Describe basic models for implementing access controls over network resources. To be successful in this course, you should have the following background: 1. Skills and knowledge equivalent to those learned in Implementing and Administering Cisco Solutions (CCNA) v1.0 course 2. Familiarity with Ethernet and TCP/IP networking 3. Working knowledge of the Windows and Linux operating systems 4. Familiarity with basics of networking security concepts. **Difficulty:** Beginner | **Language:** English | **Price:** Free **Link:** https://www.coursera.org/learn/network-security **Tags:** courses, technology-computer-science, computer-networks ## Books ### 1. Network Security Essentials **Author:** William Stallings Textbook covering applied protocol security rather than cryptographic theory: symmetric and public-key basics, then Kerberos, X.509, PGP, S/MIME, IPsec, and TLS. You finish able to explain how each protocol authenticates parties and protects traffic. **Difficulty:** Intermediate | **Language:** English | **Price:** Paid **Link:** https://www.amazon.com/dp/0130160938?tag=edmonddante07-20 **Tags:** books, technology-computer-science, computer-networks ### 2. Hacking Exposed: Network Security Secrets and Solutions **Author:** Stuart McClure, Joel Scambray, George Kurtz Long-running reference on network attack techniques, organized around the attacker's workflow: footprinting, scanning and enumeration, then exploitation of Windows, UNIX, remote-access and wireless systems, each paired with countermeasures. Readers learn how intrusions unfold so they can harden networks; some tool coverage is dated. **Difficulty:** Intermediate | **Language:** English | **Price:** Paid **Link:** https://www.amazon.com/dp/0071613749?tag=edmonddante07-20 **Tags:** network-security, penetration-testing, ethical-hacking, network-attacks, countermeasures ### 3. Practical Packet Analysis **Author:** Chris Sanders Guide to reading network traffic with Wireshark and tcpdump, working from capture setup and filters through annotated real-world traces. You finish able to diagnose slow connections, broken services, and suspicious traffic from packet captures. **Difficulty:** Intermediate | **Language:** English | **Price:** Paid **Link:** https://www.amazon.com/dp/1593271492?tag=edmonddante07-20 **Tags:** books, technology-computer-science, computer-networks --- *This content is part of Dantes.io - Your Treasure Map to Knowledge* *Curated by humans at Dantes.io. Personal study use welcome; republishing this curation requires permission (team@dantes.io).* View this page online: https://dantes.io/subject/network-security