Computer Networking - Digital Network Security


Alison Review


Online(Course Link)


On Demand

Course Categories

IT, Technology and Software





Course Fees


No. of Attendant


Acquired Skills/Covered Subjects

  • Describe how Firewalls protect network security.,Describe how the role of a Perimeter network.,List the two types of Packet filtering and their functions.,Explain the different types of Network security systems.
Provider Name Alison
Training Areas
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About The Provider

Alison is one of the world’s largest free learning platforms for education and skills training. It is a for-profit social enterprise dedicated to making it possible for anyone, to study anything, anywhere, at any time, for free online, at any subject level. Through our mission we are a catalyst for positive social change, creating opportunity, prosperity, and equality for everyone.

Alison was founded in Galway, Ireland, in 2007 and has grown organically to become a major force in free online education and skills training. Today, with more than 13 million learners in 195 countries, Alison is changing how the world learns and up-skills.

They are committed to equality and access to education and skills training irrespective of gender, geography, economic status or any other barriers that can so often stunt potential. So they offer a range of free courses that meet the many diverse needs of our learners. The UN declared in Article 26 of the 1946 Declaration of Human Rights that “Education shall be free…”. This statement will always inspire us.

Alison was founded by Alison CEO, Mike Feerick. Mike is a businessman, but one with a difference. He believes in social impact, and that you can build a financially successful business focused on meeting a huge global social need, making education and skills training more accessible for everyone. He invites anyone who believes that too, to support the Alison mission.

Alison is free of charge to you. But it’s still a business – albeit a socially-focused one. We are a social enterprise making our money through advertising, merchandise, and the sale of Certificates and Diplomas, should a graduate choose to buy one.

The course begins by defining network infrastructure and network security. It then continues by describing the features and functions of the VPN protocol and the Point-to-Point Tunneling Protocol (PPTP). It will teach you how PPTP captures Point-To-Point (PPP) frames into IP datagrams for transmission over an IP-based network. You will also learn about L2TP and how it relies on IPSec in Transport Mode for encryption services. You will also look into how Firewalls protect a network from malicious attack and unwanted intrusion.

You will then learn how a Perimeter network keeps certain information open only to specific users or to the public while keeping the rest of the data an organization's secret. The course will also discuss how Application-level gateway functions, supports, and checks whether the type of application traffic is allowed. Finally, you will look into how the Network Intrusion Detection System(NIDS) detects and monitors network traffic and how the Network Intrusion Prevention System(NIPS) inspects, removes, and redirects malicious traffic.

With the proliferation of information technology, more and more of our personal data is being encoded and stored in the world wide web. This makes it a lot easier for hackers to gain access. While it is true that there is still no network that is totally immune to attacks, it is still essential to have trained professionals who can create stable and efficient network security system. By taking this course in Digital Network Security, you will take one big step towards becoming such a valued professional.

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