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Old 01-10-2005, 07:30 PM   #1
iclinux
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How to block a port, such as 21?

Hi threre,

I wan to write a program that can block a port, such as 21.

But I don't konw how to do it.

Thanks a lot
Last edited by iclinux; 01-10-2005 at 07:44 PM.
 
Old 01-10-2005, 07:33 PM   #2
Tinkster
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Silly question, but why not just stop the services,
or use iptables?


Cheers,
Tink
 
Old 01-10-2005, 07:52 PM   #3
iclinux
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Thanks, Tinkster.

What I mean is that: after I block the specified ports, all subsequent processes can not use these ports, but I don't want to kill these process.

BTW, how to write a program with Iptables? thanks again.
 
Old 01-16-2005, 12:51 PM   #4
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