GeoIP+IPtables

apt-get install xtables-addons-common module-assistant
   apt-get install libtext-csv-xs-perl libxml-csv-perl libtext-csv-perl
   module-assistant auto-install xtables-addons-source
   mkdir -p /usr/share/xt_geoip
   iptables -A OUTPUT -m geoip --dst-cc UK -j DROP
  cd /usr/libexec/xtables-addons/
  ./xt_geoip_dl
 ./xt_geoip_build -D /usr/share/xt_geoip *.csv
 
  iptables -A OUTPUT -m geoip --dst-cc UK -j DROP