Everyone accessing the Web needs a firewall. But they can be complicated, leading to mistakes. Most security scanners check vulnerabilities from the inside. But a much stronger test will attempt to penetrate your PC’s defenses from the outside, according to this security Web site. It offers five free tests for your personal computer.
One test looks for the most common vulnerabilities. Another shows what your browser is revealing to the sites you visit. It suggests that if you’re using a proxy to mask your IP address, make sure it doesn’t show up.
Another test will list any files on your computer that can potentially be remotely snatched from visited Web sites. For a relatively low subscription price, business users can access a set of industry-leading tools for regular Web site and networkwide checkups.