Blog.Bajiri

 This week's post will cover the operation of the Internet Protocol. Specifically, Time to Live (TOL), Type of Service(TOS), the Header Checksum, and the other remaining options available when transmitting data across IP. While this post will cover the basic operations and provide descriptions of their functions and use, a more technical dive will be saved for next week's post, which will cover the specification section of RFC 791. The final post in this series will cover the security implications of the Internet Protocol, and briefly cover the updates made to the original document and protocol.  Continuing from the last post, there are two main functions of the Internet Protocol. Addressing and Fragmentation. To begin,  the device you use to connect to the internet, or the internet module, uses the addressing function of IP to send and receive data. The internet module reads the address of the datagram and uses it to route to the desired endpoint. This address is carried...

 This will be the start of several posts that will examine the RFC 791 documentation. RFC 791 covers the Internet Protocol and provides an introduction, overview, and specifications of the protocol. For this post, we'll be reviewing the introduction, as well as outlining some key terminology needed to understand the protocol. This review will be somewhat limited, and may not be overly technical, but it should provide a decent overview of the Internet Protocol.  To start, we'll cover the "who", the "why", and the "how's" of IP and give a small background on the history of the protocol.  We will also cover the basics of packet switching networks, the OSI and TCP/IP, and the structure of Internet datagrams. Hopefully, by the end of this post, you will be able to understand what these concepts are and how they fit into the Internet Protocol, as well as other protocols and standards.  The document we will be examining is RFC 791, this is not the fir...