This is nothing shocking for Ubuntu for me it was tonight :)   
      
   Instead of fighting with understanding where ShoreWall was going, I just used   
   IPTables to kill idiot spammers on my telnet port on my linux box:   
      
   sudo iptables -I INPUT -p tcp --dport 23 -i eth0 -m state --state NEW -m   
   recent --set   
      
   sudo iptables -I INPUT -p tcp --dport 23 -i eth0 -m state --state NEW -m recent   
   --update --seconds 30 --hitcount 2 -j DROP   
      
   All of a sudden idiots cannot connect here after 30 seconds    
      
   --- BBBS/Li6 v4.10 Dada-2   
    * Origin: Prism bbs (1:261/38)