Network Protocols

Last Updated on 12 April 2011, Total: 48 Articles and Tutorials

This section contains articles that will help you understand how networked computers communicate with each other using a pre-defined set of rules, otherwise known as a protocol.

  1. Understanding the DNS Protocol (Part 3)

    Over the past two articles on DNS we have seen just how big the Domain Name Service protocol actually is. It performs more then simple domain name resolution as we have seen, and also is a key player in the delivery of email via the MX resource record. In this last part on DNS we will actually break out various... Read More

  2. Understanding the FTP Protocol

    Out of the many protocols in existence today only a couple have been written for the purpose of data transfer. After all, not all of the Internet’s activity revolves around HTTP and web pages. This article will cover the FTP protocol and how it goes about actually doing your data transfers for you... Read More

  3. Understanding the HTTP Protocol (Part 1)

    The Internet is composed of all kinds of packets containing various types of traffic. One of the most used application layer protocols is HTTP. We will take a look at what really happens during an HTTP transaction, and thereby gain a deeper understanding of what this protocol is about... Read More

  4. Understanding the HTTP Protocol (Part 2)

    In part one of this article series, we covered the HTTP traffic metrics that come from a web browser client. This second part will cover what the web server itself will send, and expand a little more on HTTP itself... Read More

  5. Understanding the HTTP Protocol (Part 3)

    In part two of this article series we covered all of the HTTP metrics that were sent by the web server. We also expanded a bit more on HTTP, and how the Internet largely communicates using the client/server model. In this last part on HTTP we will further delve into the inner designs of HTTP, and show you a tool... Read More

  6. Understanding the ICMP Protocol (Part 1)

    Can you imagine a world where there are no traffic lights, stop signs, and other ways to control daily life? Well, just imagine what the Internet would be like then without the ICMP protocol. It would quickly become an unwieldy mess without it. In this article we will explore just what the ICMP protocol is, and how it works... Read More

  7. Understanding the ICMP Protocol (Part 2)

    In part one of the article we covered what the ICMP protocol actually was, and what it was used for. Further to that we also looked at one of the most common ICMP message types seen; the ping packet. This last part on ICMP will cover other various types of ICMP error messages that can commonly be seen traversing the... Read More

  8. Understanding the NNTP Protocol

    Everyone knows about peer-to-peer programs such as Napster, Kazaa, amongst others. How many people though know about binary newsgroups? I would wager not many. These binary newsgroups are based on the NNTP protocol, and this protocol will be the focus of this article. Read on to learn more about NNTP!... Read More

  9. Understanding the SMTP Protocol

    Who amongst us doesn’t like getting email? We all do of course! It is just like looking in the mailbox every morning after the postman comes by. How does email work though, and just what makes it arrive to our inbox? This will all be explained in this article giving you a far better understanding of how email works... Read More

  10. Understanding the SNMP Protocol

    With the advent of computer networks has come the logical need to manage them. It is simply not practical to be continually running from workstation to server back to workstation to verify all is well. Well that is where the Simple Network Management Protocol comes into play... Read More

Featured Links