I had a student today pose the question of "What is the difference between active and passive FTP"
 
I had thought it was wether or not the client kept it’s logged in session active while connected to the server, but after some research i was wrong. This was not a new feeling for me as over the years I have learned the more I know, the more I realize i DON’T know. It’s actually all about who is iniating the connection between the client and the server and also which ports are used. Below ew some links to a fnice reference articles.
 
 
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