Internet IP address

Internet IP address

Internet Protocol is the long form for what is otherwise known as IP. An IP address is a collection of numbers used by a computer networking system in order for computers to communicate with one another.

“An IP address serves two principal functions: host or network interface identification and location addressing. Its role has been characterized as follows: ‘A name indicates what we seek. An address indicates where it is. A route indicates how to get there,’” says RFC 791, Internet Protocol – DARPA Internet Program Protocol Specification of September 1981.

An IP address is made up of 32-bits of numbers. “Internet Protocol Version 4 (Ipv4), is still in use today,” says RFC 760DOD Standard Internet Protocol of January 1980.

What to keep in mind about IP addresses is that they consist of binary numbers. For example, a classic IP address is 172.16.254.1 says Wikipedia, IP Address. IP addresses come in handy when a computer is in trouble and may be having a networking problem such as a Wi-Fi connectivity, or a cable Internet connecting problem. When a computer user contacts their Internet Service Provider, they will discover a common solution to the problem of Internet connectivity involves the incorrect usage of an IP address.

“The Internet Assigned Numbers Authority (IANA) manages the IP address space allocations globally and delegates five regional Internet registries (RIRs) to allocate IP address blocks to local Internet registries (Internet service providers) and other entities,” says Wikipedia IP Address.

Versions of IP addresses

“Two versions of the Internet Protocol (IP) are in use: IP Version 4 and IP Version 6. Each version defines an IP address differently. Because of its prevalence, the generic term IP address typically still refers to the addresses defined by IPv4. The gap in version sequence between IPv4 and IPv6 resulted from the assignment of number 5 to the experimental Internet Stream Protocol in 1979, which however was never referred to as IPv5,” says Wikipedia IP Address.

The reason why IP addresses consist of 32-bit numbers is to accommodate the amount of space needed for all of the information on the Internet. The combination of 32-bits ensures that each designation with an IP address on the Internet will be unique. There are moments when content on the Internet does not last eternally on the Internet to allow for space for new content. This is a common factor for high school, post-secondary and graduate students who create websites through the resources of their schools and then upon graduation discover their Internet content lost. It is always a good rule of thumb to back-up files with any host provider, a host provider being an Internet service which “hosts” Internet content of individuals and businesses, such as Host Papa.com throughout North America.

 

IPv4 private addresses

“Early network design, when global end-to-end connectivity was envisioned for communications with all Internet hosts, intended that IP addresses be uniquely assigned to a particular computer or device. However, it was found that this was not always necessary as private networks developed and public address space needed to be conserved,” says Wikipedia IP Address.

There are situations such as the Intranet in workplaces and in private home networking units where private IP addresses are needed and are in use.

 

IPv4 address exhaustion

There is a danger that in the future there may not be enough IP addresses to contain all of the content on the Internet. This is perhaps one of the reasons why social networking is increasingly popular on the Internet since much information can be stored through one main IP address. As well, perhaps in future, the 32-bit numbers used to distinguish individual IP addresses will increase to 33-bit, or even increase to 34-bit, or even to 35-bit. With the strong demand for Internet usage increasing all over the world and more and more countries that were not linked online becoming more Internet-savvy, the reality of these possibilities seem more and more likely.

 

Modifications to IP addressing compiled from Wikipedia IP Address:

IP blocking and firewalls

Firewalls perform Internet Protocol blocking to protect networks from unauthorized access. They are common on today’s Internet. They control access to networks based on the IP address of a client computer. Whether using a blacklist or a whitelist, the IP address that is blocked is the perceived IP address of the client, meaning that if the client is using a proxy server or network address translation, blocking one IP address may block many individual computers.

IP address translation

Multiple client devices can appear to share IP addresses: either because they are part of a shared hosting web server environment or because an IPv4 network address translator (NAT) or proxy server acts as an intermediary agent on behalf of its customers, in which case the real originating IP addresses might be hidden from the server receiving a request. A common practice is to have a NAT hide a large number of IP addresses in a private network. Only the “outside” interface(s) of the NAT need to have Internet-routable addresses.[11]

Most commonly, the NAT device maps TCP or UDP port numbers on the side of the larger, public network to individual private addresses on the masqueraded network.

In small home networks, NAT functions are usually implemented in a residential gateway device, typically one marketed as a “router”. In this scenario, the computers connected to the router would have private IP addresses and the router would have a public address to communicate on the Internet. This type of router allows several computers to share one public IP address.

 

Additional Information

For Additional Information, please read more on the following subjects compiled from Wikipedia IP Address:

See also

 

Advertisements

2 Replies to “Internet IP address”