NFIB

Protect the Security of Your DSL Connection
10/ 18/ 2002

by Jeffrey Moses

When upgrading from a dial-up modem to a cable or DSL connection, most users agree that the enhanced speed is worth the extra cost--about $40-50 per month, as opposed to about $20 for dial-up connectivity. With this speed, however, comes an extra threat to security.

When you connect to the Internet via a conventional dial-up modem, your computer is assigned an Internet Protocol Address (IP). Each time you log off and then back onto the Internet using a dial-up modem, you are assigned a new IP. This continual off-and-on connectivity, along with the changing IP, makes you less vulnerable to hackers and others who would view or steal your information. Simply put, they don't have time to find you, access your IP and connect with your computer.

But cable and DSL connectivity usually means that you are continually online--with the same, unchanging IP open to anyone who wants to look for you. This means greater visibility to hackers or even to other users on your local network who can browse the files that you have made available for sharing. In a worst-case scenario, cable or DSL connectivity can result in a hacker stealing your data, taking control of your computer and sending messages or making purchases using your personal information.

To combat this, many cable and DSL providers supply software firewalls that can ward off unwanted access. Before signing up with high-speed providers, ask about their firewall services. Describe the level of security you need, and make sure that their software can accomplish it. Remember, no software firewall is absolutely safe, so go with the highest protection available for what you need.

If you're not satisfied with the firewall protection offered by your cable or DSL provider, consider downloading software from any of a dozen or more well-respected software companies. Simply go to http://www.zdnet.com, type "Firewalls" in the Search field, then click on "Personal Firewall Downloads" on the page that comes up. Another page will open showing a large selection of top-quality firewall software, much of which is free to download--or at least free to try. If you have questions about the strength or features of a specific piece of software, contact the manufacturer at their Web site.

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