http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080120f48.shtml
http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a0080465b25.html
http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a00808029ea.html
http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a008046589d.html
http://www.cisco.com/warp/public/63/car_rate_limit_icmp.html
http://www.cisco.com/en/US/tech/tk59/technologies_tech_note09186a0080149ad6.shtml
http://en.wikipedia.org/wiki/Bogon_filtering
http://www.completewhois.com/bogons/
http://www.cisco.com/warp/public/732/Tech/security/docs/blackhole.pdf