The big issue with wireless networks is security. As anyone with a wireless network card within a few hundred feet of your router can connect to your router. To prevent this from happening, it is important to secure your router.
To secure your Linksys WRT54G wireless router, follow these steps:
- Open your Internet browser and enter the following in the address bar: http://192.168.1.1.
Note:If you have changed the IP address of your wireless router, enter that into the address bar. By default, the address is 192.168.1.1. - Enter the user ID and password for your router. If you haven’t changed it, the default password is admin. We will change it later if you haven’t already changed it.
- You should now see the Basic Setup Web page display in your browser. Scroll down the page until you see Maximum Number of DHCP Users.
- This option will assign a specific number of IP address to computers. If more than this number of computers tries to connect to your router, they will not be able to.
- Count the number of computers that will connect to the router, and type it into the Maximum Number of DHCP Users textbox.
- Scroll down to the bottom of the Web page and click Save Settings. Once the settings have been saved, click Continue to return to the Web page.
- At the top of the Web page, click the Administration option in the menu bar.
- On the Management Web page, you should see two password text boxes. This is where you should change your administrative password. Type in a new secure password into both boxes. If you need help creating a secure password, please read Creating Secure Passwords.
- Once you have changed your password, click Save Settings at the bottom of the Web page.
- You may be prompted to login again, if you are then enter you new password in the password field.
- Navigate back to the Management Web page by clicking the Administrative option in the menu.
- We will now encrypt your connection to your router setup from your computer. To do this click the HTTPS checkbox next to the Access Server option.
- Once again, click the Save Settings button at the bottom of the Web page.
- You won’t get the settings saved page again because the URL in the address bar is not longer correct. Since you have changed your connection to HTTPS, it you need to specify that in the address when you connect to the router setup.
- In your browser, change the address to: https://192.168.1.1/.
- If you get a security error, ignore the error and continue to the Web page.
- Login with your password and then click the Wireless menu option.
- Beside the Wireless Network Name (SSID) option, type in a name for you network connection.
- Click the Save Settings button and the Continue button to return to the Basic Wireless Settings page.
- Click the Wireless Security sub-menu option at the top of the page. This is where we will provide the most important security setting.
- Next to Security Mode, select WPA – Personal from the drop-down list. If you have trouble connecting to your wireless connection, you can try selecting WEP, but your connection will be much less secure.
- Next to WPA Algorithms, select AES. Once again if you have trouble connecting to your wireless router, select TKIP.
- Now you must get very creative. Specify a long WPA Shared Key with a mix of upper and lower case letters, numbers and punctuation. Once again, please read Creating Secure Passwords for tips on how to do this. In this case the longer the better.
- Make sure you write down this key somewhere, either on a piece of paper or in a text document on your computer. You will need this information when you connect to your wireless network.
- Click the Save Settings button at the bottom of the Web page, and then the Continue button.
- Now you are all done securing your wireless router and network. All you need to do is connect to your network, and enter your WPA Shared Key exactly as you specified it.
Wireless Router Security Connection Questions
Question: How come we didn’t disable the SSID broadcast? Won’t that help with securing my wireless connection?
Answer: It has been mentioned many times that disabling your SSID broadcast will help secure your network. The reality is that those who attempt to get into your wireless network will be able to easily pick up or SSID whether it is broadcasted or not.
You may also have problems connecting to your wireless router if you disable the broadcasting of your SSID. I keep it enabled.
Question: Why don’t you filter who connects to your wireless router using the MAC address by turning on MAC address filtering?
Answer: This is another tip you may see on the Internet about securing your wireless network. There are a few problems with turning on the MAC address filtering.
The first problem is that a hacker can easily spoof a MAC address, and therefore bypass the MAC filtering. The second is that you need to manage the MAC addresses of all network cards attempting to connect to your router. Since it really doesn’t provide a lot of security, it is just easier to keep it turned off.
Question: Why do you specify to use WPA – Personal first, and not WEP?
Answer: The reason is that WPA is much more secure than WEP, and therefore you should use that security mode over WEP. An experienced hacker can easily crack WEP encryption so it doesn’t provide as strong security as WPA. If you can’t use WPA, use WEP because it is still better than nothing.
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