In passive mode, the client always initiates the connection. In the active mode, the client must accept a connection from the FTP server. The main difference between the active and the passive FTP mode is the side that opens the data connection. There are many misconfigured FTP servers on the Internet that don’t support both transfer modes, so it is recommended that you test both transfer modes. Passive - the client cannot tell the server to select a port for file transfer in passive mode, so you need to allow outgoing connections on any port on your computer.This configuration will work only in the case of a direct Internet connection without NAT routers, and your firewall should also allow creating connections on all ports above 1024
Active - in this mode, the client opens a socket and waits for a connection from the FTP server.As you can see, three transmission modes are available: You can change the FTP transfer mode on the Transfer Settings tab in your FTP connection properties. If you have a direct Internet connection and public (dedicated) IP address, you can try to switch your FTP client to the Active transfer mode. Filezilla automatically switches to Passive FTP mode, which is a more firewall-friendly protocol. This is the recommended mode for client computers behind a NAT or proxy server. Step 4: Switch Client to Use Passive FTP ModeĪlso, check if the Passive FTP transfer mode is used. This will increase the speed of your connection to most FTP servers and ensure that you are using the fastest possible speed (during our tests download speed jumped from 900KB down to 2500KB down just from changing this single option). In this mode, you are allowed to perform multi-threaded downloads at the same time via many concurrent connections. You cannot set a value higher than 10 here because multiple concurrent sessions from your FileZilla client can put a load on the remote FTP server. This way you will allow the FTP client to download or upload simultaneously 10 files in parallel threads, which significantly speeds up the overall speed when transferring multiple files. Change the “Maximum Number of Connections” to 10 (by default FileZilla uses only two simultaneous FTP connections). Go over to the Transfer Settings tab and enable the option “ Limit number of simultaneous connections”. You can increase the number of parallel FTP sessions in your client settings and bypass this server restriction. But, you can upload multiple files at the same time in different FTP sessions. Most FTP servers limit the maximum file upload speed for a session. Step 3: Speed Up FileZilla FTP Transfer by Increasing the Simultaneous Connection Number Specify the FTP server (host) name and credentials to connect (or use Anonymous logon type). Run FileZilla and create a new connection to the FTP host ( File > Site Manager > New Site). Step 2: Create a New FTP Connection in FileZilla
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