References

http://www.cisco.com/en/US/products/ps5879/Products_Sub_Category_Home.html

http://www.cisco.com/go/detector

http://www.cisco.com/en/US/products/ps6236/index.html

http://www.cisco.com/en/US/products/ps5888/products_data_sheet0900aecd8055d170.html

http://www.cisco.com/en/US/products/hw/modules/ps2706/products_data_sheet0900aecd80220a6e.html

http://www.cisco.com/go/guard

http://www.cisco.com/en/US/products/ps6235/index.html

http://www.cisco.com/en/US/products/ps5888/products_data_sheets_list.html

http://www.cisco.com/en/US/products/ps5887/products_configuration_guide_book09186a00807bfb20.html

http://www.cisco.com/en/US/products/ps5888/products_configuration_guide_book09186a00807bfb1e.html