IP Address

An Internet Protocol (IP) address is the unique identifying number assigned to every device connected to the internet. For identification, communication and transfer data between devices over the Internet

• An IP address is not random. The creation of an IP address has the basis of math. ?The Internet Assigned Numbers Authority (IANA) allocates the IP address and its creation. The full range of IP addresses can go from 0.0.0.0 to 255.255.255.255

IP Address Types:

Public IP Address: A public IP address, or external-facing IP address, applies to the main device people use to connect their business or home internet network to their internet service provider (ISP). In most cases, this will be the router. All devices that connect to a router communicate with other IP addresses using the router’s IP address

Private IP Address: A private IP address, or internal-facing IP address, is assigned by an office or home intranet (or local area network) to devices, or by the internet service provider (ISP). The home/office router manages the private IP addresses to the devices that connect to it from within that local network. Network devices are thus mapped from their private IP addresses to public IP addresses by the router.

Static IP Address: All public and private addresses are defined as static or dynamic. An IP address that a person manually configures and fixes to their device’s network is referred to as a static IP address. A static IP address cannot be changed automatically. An internet service provider may assign a static IP address to a user account

Dynamic IP Address: A dynamic IP address is automatically assigned to a network when a router is set up. The? Dynamic Host Client Protocol(DHCP) assigns the distribution of this dynamic set of IP addresses. The DHCP can be the router that provides IP addresses to networks across a home or an organization.

What is IPV4 ?

• IPv4 is that it’s the fourth version of the internet protocol ,the internet’s principal set of rules for communications
• the U.S. Department of Defence first deployed it on its?ARPANET (Advanced Research Projects Agency Network) in 1983
• IPV4 also called as 32-bit binary address
• IPV4 having 4octats , each octet separated with period mark
• In IPV4 each octet having 8bits ,it's total 32-bit

IPV4 Having 5 Classes: Default Subnet Mask Default Prefix

Class A: 1.0.0.0 - 126.255.255.255 255.0.0.0 /8

Class B: 128.0.0.0 - 191.255.255.255 255.255.0.0 /16

Class C: 192.0.0.0 - 223.255.255.255 255.255.255.0 /24

Class D: 224.0.0.0 - 239.255.255.255 Reserved For Multicasting

Class E: 240.0.0.0 - 254.255.255.255 Reserved For Experimental

IPV4 having Network portion and Host Portion