IPv6

Content that refers to the IPv6 protocol.

What is CGNAT?

Views: 10,667Carrier-Grade NAT (CGNAT), also known as Large Scale NAT (LSN), is a network technology used by Internet Service Providers (ISPs) to extend the usability of the limited IPv4 address space by sharing a small pool of public IPv4 addresses among many customers. Why CGNAT Exists How CGNAT Works Technical Characteristics Challenges/Problems with CGNAT Alternatives

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What is the ‘nslookup’ command, and how can I use it?

Views: 8,107The nslookup command is a built-in network administration tool available on Windows, macOS, and many Linux distributions. It is used to query DNS servers to retrieve information about domain names, IP addresses, and DNS records. Basic Syntax: nslookup [hostname] [DNS server] Components: Common Use Cases: Example Output: Query a Domain: nslookup example.com Output: Server:

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What is the ‘dig’ command, and how can I use it?

Views: 14,636The dig command, short for “Domain Information Groper,” in Linux or MacOS is a command-line tool used to query Domain Name System (DNS) servers. The command is a lot like nslookup, but at the same time it is different. If you are a Windows user, you have to use nslookup. For a reference on

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Why are NAT/NPAT not a security function?

Views: 5,086Network Address Translation (NAT) and Network Port Address Translation (NPAT) are not considered a security function because its primary purpose is to modify the L3 network address information in IPv4 packet headers and L4 port numbers of TCP or UDP while in transit. NAT and NPAT are not needed in IPv6 networking. NAT is

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Messing Around with IPv6 Temporary Addresses in Windows

Views: 18,725Yesterday I wanted to mess around with IPv6 Temporary addresses on my computer. Let me start with an overview of IPv6 Temporary addresses. IPv6 Temporary Addresses are a feature designed to enhance privacy for devices using the IPv6 protocol. In the IPv6 addressing scheme, devices typically have both a permanent (static) address and one

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CSI-HO-038 – Hands On Advanced Ethernet and Netmask

Views: 14,3254-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 Students – Maximum 16 Students Course Description Modern Ethernet networks extend far beyond basic switching and VLAN operation. High-performance applications, storage systems, data centers, and converged networks depend on Ethernet, TCP/IP, addressing, routing, and specialized storage protocols working together efficiently. Engineers

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IPv6 Extension Header PCAP Repository

Views: 3,495Hello my Networking and IPv6 researchers and enthusiasts.  I just started a PCAP repository at Github for IPv6 Extension Header (EH) packet capture examples.  Honestly I found nothing worthwhile on the web, that’s not to say they don’t exists in some niche place, but I wanted something easy to access and easy to add

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IPv4/IPv6 Path MTU (PMTU) Discovery Demystified

Views: 10,732 Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School A major change in the behavior of IP networks between IPv4 and IPv6 is that in IPv6 networks, all hosts are required to support something called Path MTU

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