Just add these to the root .htaccess file
http://www.ipdeny.com/ipblocks/data/countries/my.zone
Code:
<Files 403.shtml>
order allow,deny
allow from all
</Files>
#then all the malaysia ips on the above URL
This not stopping the traffic to the server but the IPs will get a 403 - Forbidden 57 bytes?
Blocking entire countries is best done with mod_geoip for Apache2 (Debian) Google for mod_geoip