Showing posts with label rcn. Show all posts
Showing posts with label rcn. Show all posts

Sunday, March 16, 2008

How To Secure a WiFi Router for the Best Wireless Security

What is best setting to secure my wireless network? What's the safest way to secure my Wifi enabled router? The steps below describe what to do for most routers that support WiFi 802.11g or better.

  1. Connect your network, wired only: connect the router to your (cable/fios/phone) modem, which is of course connected to your ISP's wire. Note: in some case, the router & modem are the same device. Connect a properly-configured computer to your router, probably with a Cat-5 Ethernet cable. Check the LEDs on the computer, router, & modem, if required.
  2. Boot up and open a browser. Can you connect to the Internet? Test with a quick trip to your favorite search page. If you can't connect wired-only, you'll never get the wireless working!
  3. Log into your router's web interface using your web browser. If you know your computer's IP address, the router is usually the same address, except the last number after the right-most dot is a "1" -- for example, 192.168.2.1 (the 1 at the end is your router's address in your LAN's address space).
  4. Enter your password to access your router's administrative features. If you didn't need a password, or you used the default password, change it now to a safe password!
  5. Go to the Wireless section on your router's administrative pages. Your browser may use different terms, like WiFi instead of Wireless.
Set your wireless network up as follows:

Hide it from Casual Snoops

These options won't protect you from a hardcore hacker (like that 14-year old kid who lives a few doors down) but will hide your network from the lazy & unprepared (i.e., most everyone else). In the Channel & SSID section of your router's Wireless/WiFi administrative pages:
  1. Change the SSID (or Network Name) to something memorable, besides the default. This isn't a password, so you can use the name of your dog, or other dictionary words. If someone guesses this, they still have to get past your impossible to guess password to use your WPA network.
  2. If possible, turn off the option to broadcast the SSID.
  3. Apply or Save the changes. For my Belkin router, that means the router needs to reboot and I have to log in.
Now, to connect to your wireless network, you have to know the SSID you set. Just don't use the default name.

Set up WPA Encryption

WPA encryption is the way to go. WEP sucks, so don't use it. WPA makes it impossible for people to connect to the network without the password, and also encrypts all the traffic so others can't snoop on your traffic and snort up your bank password.
  1. Select WPA as your security/encryption mode (also WPA2-Personal PSK)
  2. I recommend WPA-PSK authentication & TKIP encryption. Make sure these selections are compatible with your wireless card (AirPort for Macs).
  3. Set an fearsomely strong password.
  4. Save/Apply your changes.
Now, breath easy. You are locked down. Let's do a few more things to make sure your net is tight.
  • Turn off remote management. If you turn this on, chances are that you will be owned eventually.
  • Turn off UPNP (Universal Plug 'n Pray -- I mean, Play). If one of your devices requires this, your network can't be considered secure.
That's it. Save any changes, and now try to connect with your laptop.

Stay tuned for tips on what to do if you have a device that requires UPNP or WEP, or other inadequate security measures that would otherwise compromise your security.