Blocking a whole ISP

Hi,

I keep getting Port Sentry logs showing that one ISP in particular is constantly trying to attack my server.
It ranges from trying to get in via anonymous FTP (which I disabled) and other methods.

I have emailed wandaloo.fr (the ISP) numerous times about it providing the IP, type of attack, time of attack etc and they don't reply.

So now I want to totally block out ALL wandaloo.fr visiters from coming to the server.
Is there anyway to block them without them showing on the Port Sentry logs?

Regards

James

 

 

 

 

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