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What is My IP Address

Your IP Address - 38.103.63.61

TCP/IP and IP Addressing

The Internet protocols compose the most popular, nonproprietary data-networking protocol suite in the world. The Internet protocols are communication protocols used by electronic devices to talk to each other. Initially, computers were the primary consumers of IP protocols, but other types of electronic devices can connect to IP networks, including printers, cellular phones, and MP3 players. In less prolific implementations, people hook devices such as candy vending machines, dishwashers, and cars to IP networks.

The two best-known Internet protocols are the Transmission Control Protocol (TCP) and the Internet Protocol (IP). The Internet protocol suite also comprises application-based protocols, including definitions for the following:

  • Electronic mail (Simple Mail Transport Protocol, or SMTP)
  • Terminal emulation (Telnet)
  • File transfer (File Transfer Protocol, or FTP)

The Defense Advanced Research Projects Agency (DARPA) developed the Internet protocols in the mid 1970s. DARPA funded Stanford University and Bolt, Beranek, and Newman (BBN) to develop a set of protocols that would allow different types of computers at various research locations to communicate over a common packet-switched network. The result of the research produced the Internet protocol suite, which was later distributed for free with the Berkeley Software Distribution UNIX operating system. From there, IP became the Primary networking protocol, serving as the basis for the WWW and the Internet in general.

Internet protocols are discussed and adopted in the public domain. Technical bulletins called Requests For Comments (RFCs) document protocols and practices. The documents are published, analyzed, and then accepted by the Internet community.

IP is considered a Layer 3 protocol according to the OSI model. Devices map the IP address to the Layer 2 Media Access Control (MAC) address when transmitting information onto a network.

Because IP addresses are difficult to remember in their dotted notation, the Domain Name System (DNS) maps a readable name to an IP address. For example, when you type http://www.yahoo.com into a browser, the PC uses the DNS protocol to contact a DNS name server. The name server translates the name http://www.yahoo.com into the actual IP address for that host.

A network administrator is responsible for assigning which devices receive which IP addresses in a corporate network. The admin assigns a device an IP address in one of two ways: by configuring the device with a specific address or by letting the device automatically learn its address from the network. Dynamic Host Configuration Protocol (DHCP) is the protocol used for automatic IP address assignment. Dynamic addressing saves considerable administrative efforts and conserves IP addressing space.

Generally, devices that don't move around receive static addressing. For example, servers, routers, and switches usually receive static IP addresses. The rest use dynamic addressing.




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