Internet Architecture- Lecture 5

Internet Architecture
Lecture 5: How Internet Addresses and Domains WorkII

How Static and Dynamic IP Addresses Work
1* When you connect to the Internet, your computer must be identified by a number called an IP address. There are two different methods for assigning IP addresses, statically or dynamically. When you have a static IP address, your computer keeps the same IP address every time you connect to the Internet. Dynamic addresses, on the other hand, are assigned every time you connect to the Internet.
This is only the first step and the rest in the lecture.

How Network Address Translation Works
1* Computers and devices on the Internet need to have a unique IP address to perform simple tasks such as browsing the Web. But the Internet has grown so substantially since it was invented, that there are not enough IP addresses to go around. To solve the problem, Network Address Translation (NAT) is used, which also has the added benefit of protecting PCs inside a network. In a home network, NAT is performed by a home router.
It is also the first step in this process, and next steps and more detail are found in the lecture.