IPv4 addressing is used to assign a logical address to a physical device. That sounds like a lot to think about, but actually it is very simple. Two devices in an Ethernet network can exchange ...

A subnet mask is a number that specifies which parts of an IP address represent the host and network portions of the address. These masks are 32 bits in IPv4 networks and 128 bits in IPv6 networks. A ...

NAT is a technology that translates IP addresses. This article explains the difference between private and global IP addresses, the mechanism of NAT, its relationship with NAPT and IP masquerading, ...

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It's imperative for sys admins to manage IP addressing properly, even in simple networks. Routers, firewalls and monitoring tools all use IP addresses to uniquely identify and organize network devices ...