IPV4 vs . IPV6 : How Are They Different? The main differences between the two are the length of each IP address and the overall number of unique addresses available, but there are additional, more technical variations between the two versions. Larger Address Space: IPv6 uses 128-bit addresses (vs. 32-bit in IPv4), allowing many more devices to connect. Improved Security: IPv6 has built-in features like data authentication and encryption, making connections safer.. Core protocol: IPv4 and IPv6 are both considered transmission control protocols/internet protocols (TCP/IP). Developed by the Internet Engineering Task Force, both TCP and IP work together to connect devices across the internet or private computing network. Learn about all the differences between IPv4 and IPv6 in detail, including practical steps for transitioning to IPv6 .

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