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A. Expanding the Network > NIFTY NETWORK DEVICES

NIFTY NETWORK DEVICES

You can equip your network with some rather cool devices and features, some of which I consider to be almost as important as the basic necessities. In this section, I’ll discuss some of these devices.

ROUTERS WITH FIREWALLS

If you’re using a router, you can protect your network from Internet intruders at the router, instead of installing a software firewall on each computer. However, router firewalls prevent only incoming intrusions and do not prevent computers from sending data out to the Internet.

Outgoing data is a problem if a computer sends data to some computer on the Internet as a result of a virus designed to collect files. When an unauthorized software application tries to send a file to a computer on the Internet, software firewalls ask users whether they want to allow the transmission. Router firewalls never ask because they permit all outgoing transmissions (the same is true of the Windows XP built-in firewall). Don’t use a router firewall unless your computers run antivirus software, and you update the antivirus software regularly.


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