Department of

Short Course in Computer Network and Security

The computer networks use several technologies for connecting computers together we will learn some of those popular technologies that are commonly used today. This course on computer networking and security is aimed at teaching two wide spread areas of computer networking and the networking systems.
First part of the course is devoted to cover the network systems from physical cabling to planning of address schemes for network devices to build up a network. The second part of the course will be starting with topics of configuring network devices up to routing in computer networks.

Objectives of this course are as follows,

  • Different classification of networks
  • Components in interconnecting networks
  • Concepts of Communication
  • Different media types and their functionality
  • IP addressing in a network
  • Enabling Management of a switch
  • How to install and configure a Web server in Linux
  • Different media types and their functionality
  • Configure NAT Service on a Server

During this course you will learn following modules in detail.

Computer Networks

Types of Computer Networks, Network Topologies, Routers, Modems, Network HUB/Switch, Different Modes in Communication, Internet Model, Wired Media, Wireless Media Structured Network Cabling

Computer Network Practical

Switching Basis, Configuring a Manageable Switch, Routing, Network without a Centralized Administration, Active Directory Users and Computers, Installing and Configuring Linux Servers, Web Server, Database Servers, E-Mail Server, Routing and Remote Access with NAT

Network Security

Computer Security, Security Architecture, Securing Systems, Network Security, Proxy servers, Firewalls, Network Monitoring Tools

Highly recognized certificate will be offered by the Open University of Sri Lanka to the participants who successfully complete the course.

Programme Category : Short Programme –(CERC Project) Approved by The Department of Computer Science
Conducted by : The Department of Computer Science
Programme Duration : 6 months (on Saturdays)
Discipline(s) / Course(s) : Short course in Computer Network Security
Delivery : Online lectures and Onsite practical (Every Saturday)
Medium : English/Sinhala

Those who wish to get skills and knowledge in the subject.

Issuing of Applications : 22/12/2023
Closing Date for Applications : 08/03/2024
Programme commencing date : March 09, 2024 (From 8.00 am to 12.00 noon)

How to apply

Step 01: Pay Rs. 40,000/= as the course fee, to any branch of the Bank of Ceylon (BOC). Account No. 7417821

  • Account Number: 7417821
  • Account Holder’s Name and Address: The Open University of Sri Lanka
  • Purpose of Deposit: Short course in Computer Networks and Security

Sample Bank Receipt: 💾 Click here


Step 02: The Google application can be filled out through the below link. (attached images of the National Identity Card (N.I.C.), the Paid Bank paying voucher, and a recent photograph of the student)

Google Form Link:


**We will send you an email confirming of accepting your application form

*** You can pay in two installments (one installment should be paid before the deadline)



Course fee for a student will be Rs. 40, 000 /= (Per head).


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Contact Details

This Short programme is conducted by The Department of Computer Science.

For more details Contact

Address: The Department of Computer Science, Faculty of Natural Sciences,
The Open University of Sri Lanka, Nawala, Nugegoda.
Contact : Colombo Regional Centre – 0773 917088 (weekdays from 9.00 a.m. to 3.00 p.m.)
E-mail : Colombo Regional Centre –
Contact Programme Coordinator