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by Lawrence E. HughesFounder and CTO, InfoWeapons

DNS, or the Domain Name System, is a critical part of any TCP/IP network infrastructure. It allows people to use a hierarchical, mnemonic naming system (e.g. www.hp.com) for network nodes, while the underlying transport mechanisms actually use a numeric address. In the case of IPv4, that address is 32 bits long. With IPv6, it is 128 bits.