Static IP Addresses


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  Step 1:  Static IP Defined

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A static IP address is a regular IP address, specifically assigned to your computer. Your computer, whenever it is on, has this exact IP address. It doesn't change each time you turn your computer on.
  Step 2:  Why Use Static Addresses

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Static addresses are necessary for some types of connections. A connection that uses an ethernet card, like a cable modem or DSL connection, puts you directly onto the network. Because you are on the network, your computer needs to have an IP address it can always have. So you get a static IP address for an always-on connection. Dynamic IP addresses can be used for this type of use if DHCP is available.
  Step 3:  How It Works

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These high-speed connections use network cards and network protocols instead of regular modems. The Internet service provider assigns you a specific IP address. When the network card and network protocol are set up, that static IP address is entered in as the address of the computer. That address identifies you to the ISP's network so you can access it, and access the Internet.
  Step 4:  Advantages of Static IPs

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Having a static IP address does give you some advantages. First, you'll never be rejected due to a busy signal, or to all the dynamic IP addresses being taken. Secondly, as that IP address is for your computer, you can have people connect to you for chatting, transferring files, or playing games. Finally, you may be able to register a domain name for your IP address.
  Step 5:  DHCP

Not all cable modem and DSL providers use static IP addresses because of the security risk. When setting up a service provider, try to sign up with one that uses DHCP (Dynamic Host Configuration Protocol), the protocol for automating the configuration of IP addresses. With DHCP, your IP address will change each time you log in, making your system more secure.