Active and passive FTP

تاریخ : اگست ۲۰۱۵ - دسمبر ۲۰۱۵

<div><p>In the world of FTP and SFTP, there are a lot of idiosyncrasies that can be confusing to even the most seasoned user. We’ve talked many times about all the different ways FTP can be encrypted or how it connects in the first place. One thing we haven’t covered is the differences between Active vs Passive for FTP connections.</p> <p>To begin, both Active and Passive will work with ExaVault – the two modes work slightly differently, but they both have full functionality. When FTP was invented, Active mode was the only option. As time went on, Passive mode was added into FTP to accommodate certain needs – we’ll get into that a bit later.</p> <p>When an FTP connection is initiated, it begins with a control connection. The control connection sets up the parameters of the connection to be initiated – where the passive vs active connection is established, along with a lot of other settings</p> <p>When looking at the FTP connection logs, you will see PORT for an active connection, and PASV for a passive connection</p> <p>Entering passive mode FTP connection. Passive Mode, the FTP server waits for the FTP client to send it a port and IP address to connect to. In Active mode, the server assigns a port and the IP address will be the same as the FTP client making the request.</p> </div>