Copyright © 2018 Robbi Rahim. This is an open access article distributed under the Creative Commons Attribution License, which permits unre- stricted use, distribution, and reproduction in any medium, provided the original work is properly cited. International Journal of Engineering & Technology, 7 (2.13) (2018) 345-347 International Journal of Engineering & Technology Website: www.sciencepubco.com/index.php/IJET Research Paper Prototype File Transfer Protocol Application for LAN and Wi-Fi Communication Robbi Rahim 1* , Solly Aryza 2 , Pristisal Wibowo 2 , Adek Khadijatul Z Harahap 3 , Abdul Rahman Suleman 3 , Edi Epron Sihombing 3 , Yuswin Harputra 3 , Muhammad Rahman Rambe 3 , Andysah Putera Utama Siahaan 2 , H Her- mansyah 2 , Ari Riswanto 4 , M Adhi Prasnowo 5 , Hardianto Djanggih 6 , Kisman Karinda 6 , N Nasrudin 7 , Ika Agustina 7 1 Sekolah Tinggi Ilmu Manajemen Sukma, Medan, Indonesia 2 Universitas Pembangunan Pancabudi, Medan, Indonesia 3 Universitas Graha Nusantara Padangsidimpuan, Padangsidimpuan, Indonesia 4 Economic Education and Management, STKIP PGRI Sukabumi, Indonesia 5 Department of Industrial Engineering, Universitas Maarif Hasyim Latif, Sidoarjo, Indonesia 6 Universitas Tompotika Luwuk Banggai, Banggai, Indonesia 7 Universitas Muhammadiyah Luwuk Banggai, Banggai, Indonesia 8 Politeknik Negeri Media Kreatif, Medan, Indonesia *Corresponding author E-mail: usurobbi85@zoho.com Abstract FTP (File Transfer Protocol) is one of the earliest Internet protocols developed. An FTP server can be accessed by using a URI (Univer- sal Resource Identifier), using FTP file exchange between client and server is easier to do because the communication is done directly without going through an intermediary, for communication using FTP need to be designed an application that allows communication between the client and server directly without using the browser, for it is designed an FTP application using programming language in this case is Borland Delphi programming language, the ease of sending files between computers based on IP is a value added from the FTP application that is designed because most existing FTP applications can only send files between the server and the client in the in- ternet network means that online must not be local area network or wide area network. Keywords: File Transfer Protocol, Delphi Education, Protocol, FTP Application 1. Introduction At the present time, technological developments are very helpful to man in carrying out all its activities[1]–[5], especially in the field of data transmission[6]–[8]. The easier and faster the process of sending data from one host to another on a different network called routing has provided users with much easier time and effi- ciency[9], [10]. In the process of data communication between computers via the internet required a protocol[11], [12], which is a collection of rules that process communication between electronic devices, one of which is FTP (File Transfer Protocol)[13], [14]. FTP is one of the earliest Internet protocols developed, and is still used today to exchange files between FTP clients and FTP servers. An FTP server can be accessed by using a URI (Universal Resource Identi- fier), the FTP Client can perform data communications using URI. FTP servers can be accessed with Web Browser applications such as: Internet Explorer/Microsoft Edge, Mozilla Firefox, Opera, Safari, Google Chrome, and other Web Browser applications[6]. However, the use of the Web Browser application to access the FTP server can only display the linked list of files contained in an FTP server. This means that the Web Browser application can only be used to display the file list and download from the FTP server, while to perform the upload activity cannot use Web Browser application, but must use the FTP Client application. FTP Client Applications can be used to exchange files both download and upload. This research creates an FTP client application that will be de- signed to perform file transactions between FTP clients and FTP servers in a local area network so that it does not require internet connection, file transfer is only limited to copying files from serv- er to client. 2. Methodology TCP/IP (Transmission Control Protocol / Internet Protocol) is a group of protocols that allows a collection of computers to com- municate and exchange data within a network in general, and the Internet in particular[15]. A protocol is a set of rules that allows a computer to connect with one another, usually in the form of time, sequence, error checking during data transmission[16]. Computers connected to the internet communicate with this protocol. Because using the same language, i.e. TCP/IP protocol, different types of computers and operating systems are not a problem. So if a computer uses the TCP/IP pro- tocol and connects to the internet, then the computer can connect directly to other computers in any world that is also connected to the internet[17], [18]. Wi-Fi is simply a cable replacement so your computer can access the Network / LAN network[14], [19]. So if you have to look for