Author: Author: Richard Pateau

Today I am going to talk about DNS which stands for Domain Name System. DNS is a system that allows for users to access web servers or websites via human-readable domain names instead of an IP number. An IP address consists of 32 bits, and is formatted in dotted decimal format to make it more…

Today I am going to talk about ACL which means Access Control Lists. ACLs are used to filter traffic based on a certain kind of criteria which are usually found in IP headers. ACLs can be used on their own but can also be used with protocols such as NAT and NTP. NAT uses ACLs…

Today I am going to talk about DAD which is Duplicate Address Detection. DAD is widely used in IPv6 networks to prevent multiple devices from having a duplicate address on the local link.  When a device is assigned an IPv6 address, the device uses DAD to ensure that the IPv6 address is not already in…

With the introduction of IPv6 came different ways for the same things to get done. For example address resolution can now be done with NDP which stands for Neighbor Discovery Protocol. NDP not only can perform address resolution but also perform DAD (Duplicate Address Detection) and router discovery. These functions are carried out by ICMPv6…

When it comes to IPv6 as you probably know multicast is used a lot! It essentially replaces functions that operate on broadcasts and replaces it with multicast instead. One of the ways that multicast is more efficient than broadcast is its ability to target a specific amount of people rather than every single person on…

Today I am going to talk about the IPv6 header and the purpose of each field inside of the header. The IPv6 header unlike the IPv4 header is fixed meaning it will always remain 40 bytes. It consists of similar fields as IPv4 but with different names. (PIC)  Version- The IPv6 header starts off with…

Today I am going to talk about the presentation layer. The presentation layer is the 6th layer of the OSI model and plays a crucial role in computer communication. It is capable of performing multiple functions such as translating between data formats, encryption and decryption, and compression.  How Computers Talk- Depending on the protocol encryption…

Today I am going to talk about EUI-64 (Extended Unique Identifier 64-bit). IPv6 is a little different from IPv4 because not only does it have DHCPv6, it also has a feature called SLAAC (Stateless Address Autoconfiguration) which can use EUI-64. SLAAC is used to automatically generate an IPv6 address, and EUI-64 is used to automatically…

Today I am going to talk about multicast scopes. Multicast is a message type that is used to transmit a single stream of data to a group of interested recipients who have displayed interest in receiving that data by joining a “multicast group.” The original data stream is only transmitted once, and network devices such…

Today I am going to talk about the different types of IPv6 addresses used. Although IPv6 is just supposed to be another IP protocol with sufficient addresses, the design of IPv6 is very different when it comes to addresses. The types of addresses I will get into today are ULA (Unique Local Addresses), GUA (Global…