Ask the Expert

Should enterprises be running multiple firewalls?

Is it true that you should not be running multiple firewalls? What are the pros and cons of this approach?

    Requires Free Membership to View

No, it is definitely not true. While there may be situations where a single firewall is an appropriate architecture for an organization, it's equally true that many environments may benefit from the use of multiple firewalls.

Multiple firewalls are most commonly used to segregate networks of different sensitivity levels. Universities, for example, commonly use a series of layered firewalls to provide different zones of security for various types of users. A border firewall forms a loose perimeter around the entire network, providing a basic degree of protection to the entire enterprise. Other firewalls then segment off restricted portions of the network -- such as data centers, research labs, infrastructure systems and similar devices -- providing an added level of security to protect those systems from other campus users.

The correct firewall architecture for an organization depends upon a number of variables, including the homogeneity of users, the types of sensitive information being handled and the types of systems on the network. For more information on use cases, read my Firewall Architecture Tutorial.

This was first published in June 2009

There are Comments. Add yours.

TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: