Do stateful packet-filtering firewalls have vulnerabilities?

Do stateful packet-filtering firewalls have vulnerabilities?

What types of attacks are stateful packet-filtering firewalls vulnerable to?

    Requires Free Membership to View

    By submitting your registration information to SearchNetworking.com you agree to receive email communications from TechTarget and TechTarget partners. We encourage you to read our Privacy Policy which contains important disclosures about how we collect and use your registration and other information. If you reside outside of the United States, by submitting this registration information you consent to having your personal data transferred to and processed in the United States. Your use of SearchNetworking.com is governed by our Terms of Use. You may contact us at webmaster@TechTarget.com.

The stateful packet filter firewall provides no protection whatsoever from an application layer attack. In order to be effective and address today's application layer attacks, firewalls must inspect the application layer traffic. This is the reason why today many stateful packet filter firewall vendors are adopting some form of application layer filtering. Also, recent statistics show that stateful packet filter firewalls are prone to denial-of-service attacks.

This was first published in June 2007