From the course: IT Security Foundations: Network Security
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Translating the network address
From the course: IT Security Foundations: Network Security
Translating the network address
- [Instructor] IPv4 was standardized in 1981. I'm here at this site where you can see the original request for comments. IPv4 is a 32 bit address represented in dotted decimal. If we think about the potential address space, it would be two to the 32nd. Let's ask Google. Well, here we see a pretty large number, and in 1981, this was a large number. However, the reality is that scientists knew early on that we would run out of address space. Efforts to conserve address space began soon after the internet became public in 1992. In 1996, RFC 1918 outlines a method called private IP addressing that became a standard way to provide IP addressing for inside of a local area network. RFC 1918 outlines three specific groups for private IP addressing. The addresses are divided into groups as follows, for class A, class B, and class C. Private IP addresses are unregistered, and they cannot exist outside of the local area network. So what do we mean by being unregistered? Well, any device on the…
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