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Old 08-20-2005, 09:14 AM   #1
imsoparanoid
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Default blocking ftp through internet browser

is it possible to block connections coming through an internet browser and pretty much force a user to connect using an FTP client? if so, how can it be done?
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Old 08-20-2005, 02:51 PM   #2
neoxed
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No, you can't. Internet browsers that can access FTP servers ARE FTP clients. There is no reliable way to differentiate between the two (e.g. CLNT command, which isn't supported by ioFTPD).
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Old 08-20-2005, 03:51 PM   #3
MxxCon
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if you are really set on blocking browsers, you can monitor connection behaviour of a given client and spot browsers.
both IE and FireFox have pretty unique login command sequence. for example IE is sending a command to enable unicode.
also by default browsers try to connect using anon/anon info, disabling that should stop most browsers
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Old 08-20-2005, 05:25 PM   #4
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You can’t hook commands that ioFTPD doesn't support. So writing a script to kick users if they send the "OPTS UTF8 ON" (Internet Explorer) command is out of question.
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