TCP / IP (Transmission Control Protocol / Internet Protocol) is a data communication standard used by the Internet community in the process of exchanging data from one computer to another computer on the network to the Internet. This protocol is not able to be alone, since this protocol is a set of protocols (protocol suite). This protocol is the most widely used protocol today.

The data is implemented in software (software) operating system. The term given to this software is a TCP / IP stack TCP / IP was developed in the 1970s to the 1980s as a standard protocol for connecting computers and networks to form a network (WAN). TCP / IP is an open network standard that is independent of the physical mechanism of transport network, which can be used anywhere. This protocol uses a simple addressing scheme is called an IP address (IP address) that allows up to several hundreds of millions of computers in contact with each other online. This protocol is also routable protocol meaning that is suitable for connecting various systems (like Microsoft Windows and UNIX families) to form a heterogeneous network. TCP / IP is always evolving with time, given the growing need for computer networks and the Internet. Development is done by various agencies such as the Internet Society (ISOC), Internet Architecture Board (IAB) and Internet Engineering Task Force (IETF). Several types of protocols that run over TCP / IP addressing scheme, and the concept of TCP / IP is defined in documents called Request For Comments (RFC) issued by the IETF. Services in the TCP / IP Here is a traditional service that can run over TCP / IP: Send the file (File Transfer). File Transfer Protocol (FTP) allows a single computer user to be able to send or receive files to a host on the network. Authentication method used is the use of user name (user name) and [password], FTP, although many are also accessible anonymously (anonymous), alias berpassword not. (For more information about FTP can be seen in RFC 959.) Remote access. Protocol network terminal (Telnet) allows a user can log into a remote computer over a network. So this means that the user uses the computer as an extension of the computer network. (For more information about telnet can be seen in RFC 854 and RFC 855). Electronic Computer. It is used to implement an email system. (For more information about e-mails can be seen in the RFC 821 RFC 822). Network File System (NFS). Access Service files can be accessed from a distance that allows customers to access files on a networked computer, as if the file is stored locally. (More information on NFS can see RFC 1001 and RFC 1002.) Remote execution allows computer users to run a special program on a different computer. Typically useful if the user uses a limited team, while it requires a lot of resources in a computer system. There are several types of remote execution, some of the basic commands only, which can run on the same computer system and some use the response system remote procedure call (RPC) that allows programs to call subroutines that run on a different computer system YG. (eg, Berkeley UNIX is the command rsh and rexec) .. Name servers are useful as a storage host name database is used on the Internet (More information can be found in RFC 822 and RFC 823 which describes use of the name server protocol which aims to determine the name of host on the Internet.) IP Datagram Format Datagram Protocol IP: Data packets in the IP Datagram Protocol sent in the form. An IP datagram is the IP header and IP content (payload), as follows: IP header: IP header size varies from 20 to size 60 bytes, the addition of 4-byte. IP header provides support for mapping the network (routing), the identification of IP load, the size of the IP header and IP datagram, fragmentation support, as well as IP options. IP load: size of IP load also varied, ranging from 8 bytes to 65,515 bytes. Before sending in the canal network, IP datagrams will be “wrapped” with a protocol header and the network interface layer of your trailer, to create a framework for the network.