Difference between public and private ip address pdf

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difference between public and private ip address pdf

Tutorial : What are Private and Public IP Addresses

Like postal address used to deliver a postal mail to your home, a public IP address is the globally unique IP address assigned to a computing device. Private IP address, on the other hand, is used to assign computers within your private space without letting them directly expose to the Internet. For example, if you have multiple computers within your home you may want to use private IP addresses to address each computer within your home. In this scenario, your router gets the public IP address, and each of the computers, tablets and smartphones connected to your router via wired or wifi gets a private IP address from your router via DHCP protocol. The following IP blocks are reserved for private IP addresses. A public IP address is the address that is assigned to a computing device to allow direct access over the Internet.
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CCNA Routing & switching: understanding Public and private ip

A public IP address is an IP address that can be accessed over the Internet. Like postal address used to deliver a postal mail to your home.

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There are also special-use addresses, intended for technical purposes such as protocol functions etc. Normally these re not exposed to a user at all. It is public global addresses that are used in the Internet. Public global IP addresses are routed on the Internet, unlike private addresses. DNS — All of the public IP-addresses in the Internet are unique to their host or server and cannot duplicate assignment.

It is an IP address that is unique throughout the entire Internet. Depending on your service, you might have an IP address that never changes a fixed , or static IP address. For the vast majority of users, a dynamic IP address is fine. Just as your network's public IP address is issued by your ISP, your router issues private or internal IP addresses to each network device inside your network. Similar to the arrangement with public IP addresses, each device on your network has its network configuration settings on DHCP , so it can accept the unique private IP address that your router issues it.

Hence there cannot exist two computers with the same public IP address all over the Internet. User has no control over the IP address public that is assigned to the computer. A public IP address can be either static or dynamic. A static public IP address does not change and is used primarily for hosting webpages or services on the Internet. Most Internet users will only have a dynamic IP assigned to their computer which goes off when the computer is disconnected from the Internet.

Sometimes a private IP address is also referred to as a local IP address. The first set of IP addresses allow for over 16 million addresses, the second for over 1 million, and over 65, for the last range. Another range of private IP addresses is
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What is private IP address?

An IP address is what your Internet-connected device uses in order to send and receive data from other devices. If you are wondering what the difference between Private IP vs Public IP is, read the following help guide for more information. You can also find instructions on how to change both your public IP address and your private IP address. When you sign up with an Internet service provider, you are assigned a public IP address. This IP address allows you to surf the web, stream videos, and play online games. A public IP address is also known as your external IP address. Any website you visit or app you use can see your public IP address.

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