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WRT54G security...

Discussion in 'Cisco/Linksys Wireless Routers' started by goldfishplus, Jan 19, 2006.

  1. goldfishplus

    goldfishplus Network Guru Member

    Is it possible for someone near my house with a wireless computer to access web trough my connection witout me knowing it?
    Can it be secured and who?
    Can I avoid any neighbor interference (wireless phone, child monitor) and who?
  2. goldfishplus

    goldfishplus Network Guru Member

    Anyone with an idea!
  3. NateHoy

    NateHoy Network Guru Member

    1. Yes, it is possible for someone to gain access to your network unless your network is secured (encrypted), preferably with WPA.

    2. You secure your network by enabling WPA on the router and selecting a long, complex keyword to generate a "key". Then you set up each client with WPA and the same key.

    3. Yes, by trying different channels on the router until you find the one that works the best. Channels 1, 6, and 11 (if I recall) tend to be the least interefered with by cordless phones and other wireless devices. But you'll have to experiment to find out what works best for your situation.
  4. darthmalak

    darthmalak Network Guru Member

    Preferrably by WPA2 I'm sure you meant. Also disable SSID broadcasting.
  5. goldfishplus

    goldfishplus Network Guru Member

    Disabling SSID Broadcasting:

    Some access points allow you to disable the broadcasting of the SSID.
    Your access point will still send out beacons, but they won't contain the name of your access point. NOTE: if you disable SSID broadcasting, Windows XP will not be able to automatically detect your access point, and you will need to manually configure the settings for it. You might want to wait until after you can connect to your access point before disabling SSID broadcasting. ?????
  6. goldfishplus

    goldfishplus Network Guru Member

    Since I asked Linksys customer service as well, let me share their response:
    Go to “Wireless Network Access†sub-section and click the “Select MAC address From Networked Computers†button. This will show Computer Name, IP Address, MAC Address, and Enable MAC Filter or the list of online wireless computers.

    Enabling the wireless security on the router could prevent unauthorized person from using it. Only you and the person whom you gave the security settings could use the wireless connection.
    The Wireless MAC Filtering is an option for you which and it is a very good security feature. This option either allows or denies access to all wireless clients that are listed. I suggest that you enable it, this will secure your router by allowing only those whom you want to have access. To setup Wireless MAC Filtering, have all of your wireless PC’s online wirelessly and follow these instructions:

    Enabling Wireless MAC Filtering

    1.) Set MAC Filter to Enable.
    2.) Set Filter Mode to Allow, then click “Select MAC address From Networked Computers†button.
    3.) The “Wireless Client MAC List window will open, when it does check the box under Enable MAC Filter for each of your PC’s that are listed under “Online PCâ€. After you do this, click the Update Filter List button.
    4.) After you click the “Update Filter List†button, you should be back at the “MAC Address Filter List†window, and each of the MAC Addresses will be input into their own space. Scroll to the bottom of the list and click the Apply or Save button.
    5.) If the “MAC Address Filter List†window is still active, close it and click the Apply or Save Settings button on the “Wireless Network Access†page.

    You may also enable the Encryption on the router and change the network of your router for added or as the security for your router. On the Basic Wireless Settings subsection you will find the SSID or the Wireless Network Name and the Wireless Channel that your router is using.

    Changing the SSID or Wireless Network Name

    On the “Setup†page of the router, click the Wireless tab. When the “Wireless†page loads, you should be on the Basic Wireless Settings subsection, right next to that is Wireless Security, Wireless Network Access/Mac Filter, and Advance Wireless Settings.

    1.) From the “Basic Wireless Settings†subsection, look for the “SSID†section.
    2.) After locating the “SSID†section, change it to something unique, for this example we are using linksys1234.
    3.) Once you change the SSID, please write it down on a sheet of paper for future reference.
    4.) Change the channel to 11 and click on the Save Settings button, then the Continue button if prompted, then proceed to the next step (Setting up 64/128-bit WEP).

    Setting up 64/128 bit WEP

    1.) Once the SSID has been changed, click on the Wireless Security subsection, which will load the “Wireless Security†section.
    2.) From the “Wireless Security†section, set the “Security Mode†to WEP.
    3.) After selecting WEP as the “Security Mode, make sure that the “Default Transmit Key†is set to the 1 option.
    4.) Set “WEP Encryption†to the 64 bits 10 hex or 128 bits 26 hex digits option.
    5.) You may use the Passphrase option, fill it with any word then hit generate and Keys 1 to 4 will automatically be filled in or Under the “Key 1†section, input a 10 digit number for 64 bits or 26 digit numbers for 128 bits that is easy to remember, but secure.
    6.) After setting up the key, make sure to write it down on a piece of paper for further reference. The Default Transmit/TX key; that number corresponds the key number from which you are going to use as your WEP key.
    7.) After writing down the WEP Key, click on the Save Settings button, then the Continue button if prompted or close the window.

    If you have the encryption enabled on the router, you have to configure your computer with the security settings as well. Please refer to these links from our knowledge base that would help you configure your wireless computer.
    Answer ID 948 - Configuring a Linksys Wireless Adapter or click the link below;

    Answer ID 946 - Configuring a Non-Linksys Wireless Adapter with a Linksys Wireless Network or click the link below;

    N.B.The only thing I was able to change was the MAC FILTERING without loosing my connection since the laptop I'm using to work, (I'm not the administrator) and can't do any changes (like SSID & security mode)but corporatly. For my desktop, everything seems to be fine.

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