You should all try this: 

https://github.com/punktniklas/NiKom/tree/master/Extras/Botcheck

Me and others have been using it for quite a while to stop script kiddies
taking down our Amiga BBS:es with too many telnet connections and it works
great. 


--- NiKom v2.4.0
 * Origin: Delta City (deltacity.se, Vallentuna, Sweden) (2:201/120.0)