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IK2218 Protocols and Principles of the Internet 6.0 credits

A continuation course in computer science giving a good insight into and a overview of internet technology and services on Internet.

Choose semester and course offering to see current information and more about the course, such as course syllabus, study period, and application information.

Headings with content from the Course syllabus IK2218 (Spring 2019–) are denoted with an asterisk ( )

Content and learning outcomes

Course contents

Overview of the TCP/IP and OSI models, adressing, local and wide-area networks, routing protocols, transport protocols (TCP/UDP), switched and routed networks, name lookup, IPv6, network security and address translation. The course contains several guest lecturers and a thorough lab course.


Intended learning outcomes

After the course, the student should be able to:

  • generally describe the architecture of the Internet, its services and protocols, including the administration and organization of global Internet resources, such as domain names, IP addresses and Internet standards.
  • in technical detail explain the central protocols that constitute the Internet, including IP, UDP, TCP, ARP, ICMP, SNMP, DNS and SMTP.
  • describe abstractions and principles for network design, including layering, the end-to-end principle, the hourglass model, encapsulation and multiplexing.
  • describe how the procotols are implemented in end systems and routers. Explain how packet forwarding is acheived in a router, including routing, forwarding and error handling.
  • assess different methods for naming, addressing, routing and error detection and how they are used in bridged and routed networks.
  • in detail explain how reliability is provided by the Internet transport protocols such as TCP and SCTP. Describe algorithms for connection control, flow control, congestion control and error handling. The student should also be able to describe the protocol behaviour by studying a packet trace.
  • in detail describe how name lookup on the Internet works and be able to configure a simple name server.
  • describe security aspects within networking and how firewalls and address translation works and why they are necessary.
  • on a general level describe how routing works internally, and between, autonmous systems, as well as explain how they most common VPN technologies work.

Literature and preparations

Specific prerequisites

Single course students: 90 university credits including 45 university credits in Mathematics or Information Technology. English B, or equivalent.

Recommended prerequisites

For those already studying at KTH: one of the courses 2D1320/DD1320 Applied Computer Science, 2D1345/DD1345 Introduction to Computer Science, 2D1343 Computer Science, 2D1344/DD1344 Fundamentals of Computer Science, DD1346 Object-Oriented Program Construction or the equivalent


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Behrouz A Forouzan, TCP/IP Protocol Suite, fjärde utgåvan.

James F. Kurose, Keith W. Ross: Computer Networking: A Top-Down Approach, Global Edition, 7/E. ISBN-10: 1292153598, ISBN-13: 9781292153599. Pearson/Addison Wesley. 

Examination and completion

If the course is discontinued, students may request to be examined during the following two academic years.

Grading scale

A, B, C, D, E, FX, F


  • LABA - Laboratory work, 1.5 credits, grading scale: P, F
  • TENA - Examination, 3.5 credits, grading scale: A, B, C, D, E, FX, F
  • UPGA - Assignment, 1.0 credits, grading scale: P, F

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

Opportunity to complete the requirements via supplementary examination

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Opportunity to raise an approved grade via renewed examination

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Ethical approach

  • All members of a group are responsible for the group's work.
  • In any assessment, every student shall honestly disclose any help received and sources used.
  • In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

Further information

Course room in Canvas

Registered students find further information about the implementation of the course in the course room in Canvas. A link to the course room can be found under the tab Studies in the Personal menu at the start of the course.

Offered by

Main field of study

Computer Science and Engineering, Electrical Engineering, Information and Communication Technology

Education cycle

Second cycle

Add-on studies

IK2215 Advanced Internetworking


Peter Sjödin

Supplementary information

In this course, the EECS code of honor applies, see:

This course has replaced DD2392/DD2393 Principles and Protocols of the Internet.

The course can not be counted in the degree if the student has taken EP2120 or IK1550/IK1552. 

The content in this course overlaps partly with IK1203 Networks and Communication 7,5 credits. Students that have studied IK1203 is recommended to take IK2215 Advanced internetworking 7,5 credits instead.

The course is given in English.