What is the client of the file transfer log?

File Transfer Client is a computer software application used to access the data server using the File Transfer (FTP) protocol. Using this joint protocol, the client is able to transfer data to and from the server. The client application provides resources for connecting the connection and then issuing the relevant FTP commands to the server. It comes in many forms operated through the command line (CLI), graphical user interface (GUI), even conventional web browsers. The client of the file transfer protocol is therefore responsible for creating a connection to the server eventually by opening two TCP connections. The first is the control connection where the client sends commands to the FTP server. The first commands sent via a control connection are the user command, the user's wnázv as an argument, and then the Pass command followed by a password. Once the control connection is open, it remains open throughout the session.

Here, the Client of the File Transfer Protocol sets different ways of communication that it will have with the server. Data is usually represented by one of two ways, text or binary, depending on the sending or receiving data. Text -type transfers are most often used for simple text files coded either by the method of encoding the American standard code for information exchange (ASCII). The binary mode, also referred to as image mode, is for the transmission of files in a non -text binary format, such as digital images. Another, called local regime, is another way to transmit data using a unique or proprietary format.

The second TCP channel used by the File Transfer Client is Data Connúčinek. This connection is of a temporary nature and is created only when the client asks for a list of files on the server or transmits a file to a server or from a server. When data is not transferred, the data connection is destroyed. Data connectionIt is also unique in how it is determined, either actively passively. The client must tell the server the type of data connection that can be used depending on what type of connection is available on the client.

with an active data connection client for file transfer tells the server which TCP port number to be used for data connection. When using in passive mode, however, the client simply tells the server that it is passive, and the server then informs the client to use the TCP port for data connection. In most cases, the client is set to passive connection due to the use of the firewall gate, which protects them from unauthorized access.

As a result of the general lack of safety in FTP, Securiity for the Client for File Transmission Protocol, it is an integral part of its operation, so the user's activity is safe from curious eyes. Several other security techniques have been designed for use with FTP over the years, such as the client either explicitly named the security protocol,to be used or is automatically implicated. Other clients try to use FTP using the Secure Shell tunnel (SSH), which may have problems due to the fleeting nature of the data connection.