Closing port on too many requests

In this day and age a persons server cannot seem to be left alone and just do what it was meant to do.

I currenty have a few dedicated servers arround the world and through my past have always come to some sort of problems with script kiddies and DDOS attacks and I am sure there has to be a way to solve my problem as others must experience this aswell.

For Example.


Server 1 is running with all the following ports open 110,25,21,80,23,5469(Proftpd),6667(ircd) and the o/s is RH9

say for example the server started getting attacked on port 21 could there be any way of getting the server t deny any requests to and from that port till the attacks die down ?

 

 

 

 

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