Why, in FTP application, is the port 20 automatically included once Port 21 is enabled in SUA menu?

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Why, in FTP application, is the port 20 automatically included once Port 21 is enabled in SUA menu?

April 26, 2017application automatically enabled FTP included menu port sua

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Why, in FTP application, is the port 20 automatically included once Port 21 is enabled in SUA menu?
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score 0 · Answer 1 · 2010-04-25T23:15:20+00:00

To let FTP work well with SUA of Prestige 480, users need to configure Port 20 and Port 21 server IP address in menu 15, SUA server configuration. To be more friendliy, currently when you assign port 21 in SUA table, port 20 are automatically included. In no other applicatios does this in ZyNOS.

Why, in FTP application, is the port 20 automatically included once Port 21 is enabled in SUA menu?

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