Using leak tests to evaluate firewall effectiveness

A firewall provides security which is additional to that provided by other security solutions and appliances. Additional security is becoming increasingly relevant due to the increase in the number of new malicious programs.

Firewalls block undesirable network traffic, both inbound and outbound. Leak tests, which are the subject of this article, evaluate how reliably a firewall controls outbound traffic and protects the computer from data leaks.