In this mode, the client initiates both channels therefore, the organization has less or no alterations to make on the client firewall. In the passive mode, both the command and data channels are established by the client. As for the active and passive modes, in the active mode, the client launches the command channel, and the server establishes the data channel. The command channel is for sending the commands and responses, and the data channel is for sending the actual data. And, it uses two channels between the client and server: the command channel and the data channel. FTP uses two ports, one for connection and one for sending data.įTP can run in two modes: active and passive. The computers transferring the files can be within the same network where the FTP server is configured, as well as outside the network (over the Internet). The server hosts the files to be shared and the client provides the interface to access, download, or upload files to the file server. For instance, both FTP/S and SFTP support encryption, which can keep a hacker from accessing data being transferred.įTP functions on a client-server model. These two secure file transfer protocols were designed to address the main weaknesses of FTP. There are two main implementations of secure FTP: SFTP and FTP/S. However, secure FTP protocols do exist now to combat this issue. Traditional FTP Servers do lack security- the only security feature that they really have is a login feature (username and password), which provides some degree of authentication and is a way to keep out unwanted users. Some people even use FTP Servers for offsite backup so they can access their data should something physically happen to their files.įurther, backup applications will often write to an FTP or SFTP Server for example, if you’re backing up your Cisco Unified Call Manager (CUCM), the data must be backed up to an SFTP Server like Titan FTP Server. If you are exchanging non-sensitive data with business partners, and the partner requires FTP or SFTP, you can quickly set up a server that will accept their data transfer. If you have remote employees who need to upload non-confidential information (such as timesheets, for example), or if you want to allow your customers to download white papers and documentation, an FTP Server works well for this purpose. If security is not a concern, FTP Server software is an easy and inexpensive way to accomplish this. An FTP server will listen for client connections on port 21.įTP servers, and the more secure SFTP Server software, perform 2 basic tasks: “Put” and “Get.” You can put files on the FTP Server or get files from the FTP Server. The FTP protocol typically uses port 21 as its main means of communication. One computer acts as the server to store information and the other acts as the client to send or request files from the server. FTP is a very well-established protocol, developed in the 1970s to allow two computers to transfer data over the internet. FTP is a standard network protocol used for the transfer of files between a client and server on a computer network.
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