Internet Protocol (IP) addresses areusually of two types: Public and Private. If you have ever wondered to knowwhat is the difference between a public and a private IP address,then you are at the right place. In this post I will try to explain the difference between a public anda private IP addresin layman’s terms so that it becomes simple and easy to understand.

YOUR PUBLIC IP IS

What are Public IP Address?

A public IP address is assigned toevery computer that connects to the Internet where eachIPis unique.Hence there cannot exist two computers with the same public IP address all over the Internet. Thisaddressing scheme makes it possible for thecomputers to “find each other” online and exchange information. User has no control over the IP address (public) that is assigned to the computer. The publicIP address is assigned to the computerby the Internet Service Provider as soon as the computer is connected to the Internet gateway. 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.On the other handa dynamic public IP address is chosen from a pool of available addresses and changes each time one connects to 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. Thus when it is re-connected it gets a new IP. You can check your publicIP address by visiting www.whatismyip.com

What are Private IP Address?

An IP address is considered private if the IP number falls within one of the IP address ranges reserved for private networks such as a Local Area Network (LAN). The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for privatenetworks (local networks):

10.0.0.0 – 10.255.255.255 (Total Addresses: 16,777,216)
172.16.0.0 – 172.31.255.255 (Total Addresses: 1,048,576)
192.168.0.0 – 192.168.255.255 (Total Addresses: 65,536)

Private IP addresses are user for numbering the computers in a private network including home, school and business LANsin airports and hotels which makes it possible for the computers in the network to communicate with each other. Say for example, if anetwork X consists of 10 computers each of them can be given an IP starting from 192.168.1.1 to 192.168.1.10.Unlike thepublicIP,the administrator of the privatenetwork is free to assign an IP address of his own choice (provided the IP number falls in the private IP address range as mentioned above). Devices with private IP addresses cannot connect directly to the Internet. Likewise, computers outside the local network cannot connect directly to a device with a private IP. It is possible to interconnect two private networks with the help of arouter or a similar device that supports. If the private network is connected to the Internet (through an Internet connection via ISP) then each computer will have a private IP as well as a public IP. Private IP is used for communication within the network where as the public IP is used for communication over the Internet. Most Internet users with a DSL/ADSL connection will have both a private as well as a public IP. You canknow your private IP by typing ipconfig command in the command prompt. The number that you see against “IPV4 Address:” is your private IP which in most cases will be 192.168.1.1 or 192.168.1.2. Unlike the public IP, private IP addresses are always static in nature.

I'm reading: IP address and Its Types.

Computer network

A computer network is a collection of Computer and devices connected by communications channels that facilitates communications among users and allows users to save time, money and share resources with other users.


Networks are often classified as Local Area Network (LAN), Wide Area Network(WAN),Metropolitan Area Network (MAN),  Virtual Private Network (VPN), Campus Area Network(CAN), Storage Area Network (SAN), and others, depending on their scale, scope and purpose.
Local area network

A Local Area Network (LAN) is a network that connects computers and devices in a limited geographical area such as home, school, computer laboratory, office building, or closely positioned group of buildings.

Most local area networks are built with relatively inexpensive hardware such as Ethernet cables, network adapters, and hubs. Wireless LAN and other more advanced LAN hardware options also exist.

Specialized operating system software may be used to configure a local area network. For example, most flavors of Microsoft Windows provide a software package called Internet Connection Sharing (ICS) that supports controlled access to LAN resources


Wide area network

A Wide Area Network (WAN) is a computer network that covers a large geographic area such as a city, country, or spans even intercontinental distances, using a communications channel that combines many types of media such as telephone lines, cables, and air waves. A WAN often uses transmission facilities provided by common carriers, such as telephone companies.

WANs are used to connect LANs and other types of networks together, so that users and computers in one location can communicate with users and computers in other locations. Many WANs are built for one particular organization and are private. Others, built by ISPs, provide connections from an organization's LAN to the Internet. WANs are often built using Leased Lines At each end of the leased line a router connects to the LAN on one side and a hub within the WAN on the other.

Storage area network

A storage area network (SAN) is an architecture to attach remote Computer Data Storage devices (such as disk arrays, tape libraries and optical jukeboxes to servers so the devices appear as locally attached to the Operating System. A SAN typically has its own network of storage devices that are generally not accessible through the regular network by regular devices. The cost and complexity of SANs dropped in the late 2000's, resulting in much wider adoption across both enterprise and small to medium sized business environments.

Historically, data centers first created "islands" of SCSI disk arrays as Direct Attached Storage (DAS), each dedicated to an application, and visible as a number of "virtual hard drives" (i.e. LUNs). Essentially, a SAN consolidates such storage islands together using a high-speed network.

Operating systems maintain their own file system on them on dedicated, non-shared LUNS, as though they were local to themselves. If multiple systems were simply to attempt to share a LUN, these would interfere with each other and quickly corrupt the data. Any planned sharing of data on different computers within a LUN requires advanced solutions, such as SAN file systems or clustered computing

Despite such issues, SANs help to increase storage capacity utilization, since multiple servers consolidate their private storage space onto the disk arrays.

Common uses of a SAN include provision of transactionally accessed data that require high-speed block-level access to the hard drives such as email servers, databases, and high usage file servers.

I'm reading: TYPES OF COMPUTER NETWORKS

HELLO FRIENDS I AM SHOWING YOU HOW TO HOST WEBPAGES AT HOME..
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STEP.1

GO TO CONTROL PANEL AND SELECT

*ADD OR REMOVE PROGRAMS

STEP.2

SELECT

* ADD OR REMOVE WINDOWS COMPONENT

STEP 3
ADD
*IIS(INTERNET INFORMATION SERVICES)

STEP.4
THEN GO TO CONTROL PANEL AND SELECT

*IIS FROM ADMINISTRATIVE TOOLS

STEP.5
EXPAND THE LOCAL COMPUTER
AND LEFT CLICK ON DEFAULT WEBSITES AND SELECT PROPERTIES..

STEP.6
ON PROPERTIES SELECT DOCUMENTS TAB..
AND CHECK FIRST DOCUMENT TYPE IS INDEX.HTML.
THEN OK AND EXIT..

then go to c drive
open inetpub

wwwroot is your directory where you can save your pages..

i already save a page name index.html

then go to mozzila

and type "local host"
without quotes
in address bar

you can see the webpage on local host

in next tutorial i will show you how to redirect your local host from web..

VIDEO TUTORIAL

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I'm reading: Host Webpages from home without any external server