Network Applications and TCP/IP Security

Overview

This course covers the application-layer protocols and services that run on top of TCP/IP and the security mechanisms that protect them. Covering approximately 4 hours and 19 minutes of expert instruction across network services, application protocols, and TCP/IP security, learners develop the skills to configure and secure the services that users depend on daily. Learners benefit by understanding DNS, DHCP, NTP, email protocols, web services, file transfer protocols, and how to secure network communications using firewalls, access control lists, and secure protocol alternatives. online labs reinforce service configuration and security implementation tasks. By the end of this course, learners will be able to configure common network services, implement TCP/IP security controls, and explain how application-layer protocols operate in enterprise networks.

Syllabus

TCP/IP Protocols

This chapter introduces key network protocols, traffic types, and troubleshooting tools, including TCP/UDP, and ICMP/IGMP.

TCP/IP Applications

This chapter continues with troubleshooting tools, including Wireshark, netstat, NTP, and common service issues.

Network Naming & DNS

This chapter introduces the DNS system, explaining how domain names are resolved, the purpose of key DNS record types, and how to troubleshoot common DNS issues.

Securing TCP/IP

This chapter introduces core security and authentication concepts, covering identity verification, access control, AAA protocols, single sign‑on, symmetric and asymmetric encryption, and the role of digital certificates in securing networks.