detecting portscanning

[Rudy Gevaert <webworm@zeus.rug.ac.be>]

Hello Everyone,

It is my first time i'm putting up a server (at home, cable modem) with
ftp/ssh/apache on it.

Now I would like to know who does portscans on my machine, and when.  And
how many.

Is there a package for it in debian?  Or do I have to install something
else.

Thanks in advance,

Rudy
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