Ask the Expert

Securing an operating system with a firewall

How can a firewall secure my operating system?

    Requires Free Membership to View

A firewall can allow some services that you want to run locally (like Windows File Sharing or Network File System) to stay on your local network and not be on the whole Internet. It can block services that you didn't mean to have running (like a Web server on a laptop) from being accessible to the whole Internet.

A firewall cannot, however, protect you from malicious programs like viruses or worms; nor can it protect you from security relevant bugs in core Internet services, like mail servers, Web servers or DNS servers. Nonetheless, a firewall is an important part of any security strategy.

This was first published in February 2001

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: