Any danger from these ports?

Alexander Dalloz ad+lists at uni-x.org
Wed Jan 12 23:55:01 UTC 2005


Am Do, den 13.01.2005 schrieb Aaron.Sterr um 0:42:

> Passive FTP does NOT use the local ephemeral ports, that is traditional
> FTP behavior.  Passive FTP uses the existing TCP connection for both
> the control and data channels, and is easier to firewall. 
> 
> Of course, the ftp server needs to know how to use passive FTP instead of
> traditiional FTP.

Where do you have this "knowledge" from?

http://slacksite.com/other/ftp.html illustrates well how active and
passive ftp work.

Alexander


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Alexander Dalloz | Enger, Germany | new address - new key: 0xB366A773
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