 | | Do firewalls really work? | | Dear CNET members,
Happy Friday! Each week I receive a few dozen e-mails from our members, but this one stood out for me and I wanted to share it with you. It's about backing up your data. I know, I know, you're probably sick of reading my rambles about how important it is to consistently back up your data. However, if your data is important to you, while your physical backup is great, in the wake of Japan's recent catastrophic event, the question I have for you is: is your data backup prepared for the worst case scenario? Physical backups are great, but they are no good if the backup is physically destroyed. Here is Martha's e-mail to me and it definitely serves as a reminder to be prepared. Martha, thanks for sharing! Now let's help Perry answer his question: do firewalls really work?
Well Perry, you asked and your fellow members delivered. This week we have many helpful answers that will give you insights about firewalls: how they work, and what they do and can't do. While a few answers have been explained in technical terms, I also found a couple of members' posts that used great analogies. Cyberpigue gives the example using a "firewall as a gatekeeper in a gated community." And member JEfromCanada gives the intruder as a door-to-door salesmen constantly coming to your door. Great explanations!
While firewalls are a must-have to help prevent intrusions to your system, as many members pointed out, you are ultimately responsible of who you allow into your system. A firewall is no guarantee to keep the nasty out. The bottom line is to use common sense computing.
Perry, I hope that by the time you are done reading through the answers this week, you'll have a better understanding of how firewalls work, what their limitations are, and what is best to protect yourself. Happy reading! If any of you have any additional advice or tips about firewalls, be sure to join us in the discussion. Thank you all for your participation. Be safe out there!
(Note: In the coming weeks I will be busy preparing our forums for some major changes to better serve all of you, so I will not be sending a newsletter for the short term. Our forums are always here for you, so please continue using them as your resource for all technical help and how-tos. See you all in few weeks.)
Cheers!
- Lee
Got suggestions? Send me an e-mail: messageboards@cnet.com | | | 
Lee Koo
CNET Community manager |  | | Last week's question | | | Do firewalls really work?
 I have a question for the forum: "Do firewalls really work?" Almost every PC you can buy has at least one Windows firewall built-in, if not more. Yet we often hear that this or that system has easily been hacked. Is this a weakness of the firewall, or the user, or both? And, any tips on the best approach to using a firewall? Is the one that comes with Windows sufficient or should I choose a different one? Also, are physical firewalls built into routers better than software firewalls? Do you really need both? Thanks for any advice or recommendations you can offer!
-- Submitted by: Perry B. | | | | Check out next week's question: | | | I'm sick of ink-sucking printers, buying advice needed
 I am so frustrated with printers and the amount of ink they now use, not to mention the cost of the ink. I don't do much scanning or printing in color and no faxing, so I don't need a high-end printer. I do a fair amount of grayscale printing each day. My problem is that the printers I have had in the past couple of years guzzle ink and use almost as much color ink as black ink, even though I am not printing pages in color. That was not the case in the past with my older printers. My color ink seemed to last forever. Not true, these days. Now that I have Windows 7, I haven't found a compatible printer that is efficient without costing an arm and a leg to operate. Can anyone give me any suggestions on what kind of printer I should purchase? Thanks.
-- Submitted by: Allison H.
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