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This chapter covers network protocols, services, and infrastructure essential to cybersecurity operations. The OSI and TCP/IP models provide a tiered picture of data transport across networks. HTTP, HTTPS, FTP, SMTP, DNS, and DHCP are examined with examples of their use and vulnerabilities. Port numbers, IP addressing, and subnetting are covered in the chapter to teach networking basics. Students learn how routers, switches, firewalls, and intrusion detection systems (IDS) contribute to a safe and functional infrastructure. Wired and wireless technologies are discussed, focusing on configurations and hazards. Network design from traditional models to cloud-based and software-defined networks is also examined in the chapter. Traffic analysis and troubleshooting with Wireshark and Netcat encourage hands-on learning. The information helps students examine real-world network protocol and misconfiguration attacks. This chapter connects theoretical networking ideas to security consequences, providing cybersecurity experts with their technical foundation.

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Network Protocols, Ethernet and IP Protocol, Connectivity Verification, Address Resolution Protocol

  • 章节

  • 发表日期：

    2025年

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  • Rajkumar Banoth,
  • Aruna Kranthi Godishala

摘要

This chapter covers network protocols, services, and infrastructure essential to cybersecurity operations. The OSI and TCP/IP models provide a tiered picture of data transport across networks. HTTP, HTTPS, FTP, SMTP, DNS, and DHCP are examined with examples of their use and vulnerabilities. Port numbers, IP addressing, and subnetting are covered in the chapter to teach networking basics. Students learn how routers, switches, firewalls, and intrusion detection systems (IDS) contribute to a safe and functional infrastructure. Wired and wireless technologies are discussed, focusing on configurations and hazards. Network design from traditional models to cloud-based and software-defined networks is also examined in the chapter. Traffic analysis and troubleshooting with Wireshark and Netcat encourage hands-on learning. The information helps students examine real-world network protocol and misconfiguration attacks. This chapter connects theoretical networking ideas to security consequences, providing cybersecurity experts with their technical foundation.