Like every other website on the planet, SmallNetBuilder uses cookies. Our cookies track login status, but we only allow admins to log in anyway, so those don't apply to you. Any other cookies you pick up during your visit come from advertisers, which we don't control.
If you continue to use the site, you agree to tolerate our use of cookies. Thank you!

Router Charts

Click for Router Charts

Router Ranker

Click for Router Ranker

NAS Charts

Click for NAS Charts

NAS Ranker

Click for NAS Ranker

More Tools

Click for More Tools

Wireless Basics

Skill Level 0 Countermeasures - more

Countermeasure 4: Turn it off!

People commonly overlook the simplest way of securing their wireless network - turning off the AP! A simple lamp timer can be used to turn off your AP during the overnight hours when you're not using it. If you have a wireless router, this will mean that your Internet connection will also be disabled, which also isn't such a bad thing.

If you can't or don't want to periodically shut down your Internet connection, you'll have to remember to disable your wireless router's radio manually - if it has this feature. Figure 2 shows a typical wireless disable control. This manual method is more prone to error, however, since it's just one more thing to forget. Perhaps at some point manufacturers will add radio disable to the features that can be scheduled on wireless routers.

Shutting off the radio

Figure 2: Shutting off the radio

Countermeasure 5: MAC Address Filtering

MAC Address filtering is used to control access to your AP by allowing (or denying) access to a list of wireless client MAC addresses you enter. It will prevent an unskilled intruder from connecting to your WLAN, but MAC addresses are easily captured by more skilled attackers and wireless adapter MAC addresses easily changed to match a captured address.

MAC Address filtering on an older USR 8011 AP

Figure 3: MAC Address filtering on an older USR 8011 AP
(click image to enlarge)

Countermeasure 6: Lower the transmit power

While only a few consumer APs have this feature, lowering your transmit power can help limit intentional and accidental unauthorized connections. But with the increased sensitivity of wireless cards that even unskilled users can purchase, it may not be worth the bother - especially if you're trying to prevent unwanted connections in an apartment building or dorm.

Most skilled attackers typically use high-gain antennas, which allow them to detect very low signal levels and effectively offset this countermeasure.

More Basics

Wi-Fi System Tools
Check out our Wi-Fi System Charts, Ranker and Finder!

Support Us!

If you like what we do and want to thank us, just buy something on Amazon. We'll get a small commission on anything you buy. Thanks!

Over In The Forums

Hi,Since a few versions ago, the list of connected devices (Not sure how it was called, network map or so) seems to be completely broken on my AC68U.F...
I am testing wan speed on a gigabit network while activating different options in the router. Here is what I got so far:- about 920 mbs while no optio...
So this is going to probably sound crazy but here is how this unfolded. I have a dedicated IP address on TorGuard's VPN service and it's been working ...
Hello,I have Guest Network enabled on my RT-AC68U router, I noticed the ip address assigned to the device connected on guest network are in the same i...
Hi There, I've been checking the latest wireless systems for home and I came along Orbi and Google Wifi. I'm planning to upgrade my old Linksys router...

Don't Miss These

  • 1
  • 2
  • 3