An external assessment or perimeter testing is conducted from outside the perimeter of the private network. The tests are designed to evaluate the security defences put in place to protect the organisation from attack via the Internet. A different degree of investigation is required in distinct scenarios, an external assessment therefore include one or more of the following types:

• Internet Footprint
• Penetration Testing
• Comprehensive External Assessments
• Web Application Assessments
• Web Services Assessments
• Thick Application Assessments
• Wireless Assessments