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Chapter 7. Making Your Network Secure: L... > What Went Wrong: Your Quick Fix Refe...

What Went Wrong: Your Quick Fix Reference

Maintaining the security of your home network can be one of the most complicated tasks in the entire procedure of setting up your own network. Here are some potential pitfalls you might encounter and some suggestions for dealing with them:

  • If you attempt to follow the step-by-step procedure for changing the password on your wireless router but are unable to access your router, someone might have already changed the password. The solution is to press the Reset button on the back of your router to restore all default settings. Remember, though, that this means you will have to also reset every other setting you have modified on your router.

  • The total number of items on the MAC filter list should match the number of wireless devices you have on your network. If there are more items than there should be, someone else is accessing your network. In that case, disable one device at a time and check to see if all your devices can still connect. It will take some work, but you will be able to remove the unauthorized device from the MAC filter list and prevent it from accessing your network.

  • If you forget to add the IP address range for your home network to the trusted zone, your computers will be able to browse the Internet, but they won't be able to access anything on your home network. Adding an incorrect IP address range can also cause this effect, so if you encounter this type of problem, verify that the firewall on each of your PCs has the proper IP address range added to the trusted zone.

  • If you have enabled WEP or WPA encryption on your router, your wireless PCs will be able to connect only if the correct type of encryption is specified and if they have the correct key. Remember that passphrases are case sensitive. Also, if you enter the encryption key directly, the only acceptable characters are the numbers 0–9 and letters A–F.


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