Yes to both of your questions. one involves modifying your host file the other your server.cfg file
1st the easy one
use the following command
[code:32927]seta sv_maxping "300"[/code:32927]
Just set the ping to what you want your maximum ping to be.
The other question can not be done within MOH itself. You have to edit your computers host file to reject an individual's IP address b4 it even gets to your computer.
Follow this guide found in our guide section:
http://www.alliedassault.com/community/ ... x1_1.shtml
That should do it. If you still have questions just post them
Good luck