SH>   I use a firewall for that.  I suppose another way would be to use Sync   
    SH> or Mystic to launch your dos bbs software... I /think/ they have the   
    SH> option to auto block IP's don't they?   
      
   Yes, Mystic can auto block IPs after X connections from the same IP in X   
   amount of time, and it can also block by origin of connection (ie entire   
   countries).   
      
   It also has your traditional "blacklist" and "whitelist" where you can add IP   
   addresses to a list to never or always allow them, and you can also use   
   wildcards.   
      
   It has a built in matrix login menu so you can create a BBS software menu   
   without requiring the user to log in.  You can also use MPL to script a menu   
   or do whatever you'd like without requiring user login.   
      
   --- Mystic BBS v1.12 A1 (Windows)   
    * Origin: Sector 7 [Mystic BBS WHQ] (1:129/215)