A good knowledge of networking will be a great stepping stone to having an exciting career in Networking and Securiy.

Why Networking & Security?

Our daily lives rely increasingly on connectivity, we live in the world of The Internet of Things. It is vital that we know how to use this technology in a secure manner. We need to understand how this technology works and be able to identify the potential threats involved when we use it. Furthermore, there are more and more exciting careers available in the Networking and Security world. Why not pursue a career in the exciting and evolving field of Networking and Security?

This course will take the student through every step taken to configure and secure the typical devices used in the process. On completion of this course the student will have sufficient knowledge and skills to be able to embark on a career in Networking and Security.


Course Overview

You will get an extensive overview of all the key components of a computer network. This Diploma course will teach you the skills needed to support Network devices in a modern IT environment and enable you to study other fields such as Cybersecurity.

Diploma in Networking Content

In this course we will cover:

  • An Introduction to Networking
  • Security Threats
  • Operating systems – Windows & Linux
  • OSI Model and the TCP/IP protocol suit
  • Analysis of Network Protocols and their roles – TCP/IP, ARP, DHCP, DNS, NAT
  • Use of a Wireshark software in analysing network traffic
  • Network Devices and their configuration
  • Network Security Infrastructure – IPS, IDS, Firewalls, SNMP
  • Types of attacker and their tools
  • Security Technologies and Protocols – NTP, Syslog, DNS, HTTPS, Access Control Lists
  • Encryption
  • Digital Forensics
  • Building & securing a small network

What Will I Learn From This Course?

Having completed this course, the student will be able to configure and secure the key components of a modern network, including PCs, routers, and switches. The student will be able to identify the potential threats posed when accessing and using Information Technology Systems.

Diploma in Networking Course Fee

Online course: €895
(€995 if paying in instalments)

If paying in instalments by direct debit, the deposit to book a place is €150 and the balance is split into three equal monthly payments.

Non-EU students: Call +353 1 4160034



John Sexton

John Sexton is a Chartered Engineer Electronic Engineering.

He holds a Master’s degree in Engineering from DCU, obtained in 1998.
John originally worked in the Telecoms sector before moving into Network Engineering in the nineties.

In 1998, he joined the lecturing staff in the Institute of Technology Tallaght, now part of the Technological University of Dublin. He lectured in Network Engineering for 18 years. In this time, he designed and delivered Networking modules at NFQ levels 6, 7 and 8. He has also delivered the CCNA Routing and Switching course for over 10 years.

He is currently a visiting lecturer for the Université de Toulouse II Jean Jaurès.

He has acquired a lot of experience teaching to groups of varying levels of education.


A pass grade on the written assignment will be required for awarding of the Diploma.

Similarly, the Project must be handed in on the due date unless a sound reason for lateness is provided. In such instances, an extension may be awarded at the discretion of the lecturer.

Why City Colleges

  • Courses for students who are passionate about their subject, delivered by leaders in their field.
  • Live lectures which are also streamed live on Moodle and recorded for review
  • Leading e-learning tools to make the online learning experience a pleasant one
  • Study rooms and library in our City Centre location in Dublin, Ireland
  • Limited class size creating a better learning environment

Enrol Now

Select your Courses

Select the desired options and click the enrol button below when finished

Diploma in Networking & Security (Live Online)

Online Diploma in Networking & Security


6:30 PM - 9:30 PM