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Blocking Connectivity to WLAN

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  • Blocking Connectivity to WLAN

    We have 2 WLANs at my facility. One is a private, secured, hidden WLAN and the other is a public, unsecured WLAN.

    The internet restrictions are definitely stricter on the private WLAN than the public. We have recently encountered a problem where mobile employees will connect to the public WLAN to access a less restrictive internet, then end up calling our help desk because they cannot use their applications since the 2 networks are separate, which causes a lot of extra work for us.

    Is there a way to prevent users from connecting to this public WLAN? We still need them to connect to other WLANs outside the organization, but would like to prevent the access to our public. Our users understand that if they are outside our building, they can use VPN to access their programs, but inside the building the cannot.
    MCITP:SA, MCSA 2003, MCP, CCNA, A+, Net+, Security+

  • #2
    Re: Blocking Connectivity to WLAN

    MAC filtering ?
    CCNA, Network+

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    • #3
      Re: Blocking Connectivity to WLAN

      Originally posted by Daze View Post
      MAC filtering ?
      We thought about that, but we do not have a current list of MAC addresses of our machines.
      MCITP:SA, MCSA 2003, MCP, CCNA, A+, Net+, Security+

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      • #4
        Re: Blocking Connectivity to WLAN

        Look at your logs of the secured wlan (I hope you keep such or start it now).

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        • #5
          Re: Blocking Connectivity to WLAN

          Originally posted by boondock View Post
          We thought about that, but we do not have a current list of MAC addresses of our machines.
          While you're writing the script to audit your fleet of laptops for MAC addresses<grin>... you could try the following: push out a wireless profile via a GPO and include that SSID but put some wrong information into it such as encryption type or shared-secret so that it wouldn't be able to connect. This won't really do anything if your users use third party tools to connect to wireless networks, such as the WLAN card's software.

          This thread does, however, seem to put some rather sturdy nails into the coffin of hope for addressing this issue within Windows itself. This doesn't seem to be an off-the-wall desire by any means. I'd bet there's a third party app that'll do this. I just haven't been able to track it down yet.

          You're fortunate that you have control over both networks. Others are having trouble with their users connecting to an adjoined business's open WAP for which they have no control over.
          Wesley David
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          Microsoft Certifications: MCSE 2003 | MCSA:Messaging 2003 | MCITP:EA, SA, EST | MCTS: a'plenty | MCDST
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          • #6
            Re: Blocking Connectivity to WLAN

            if you are letting windows manage your wireless connections you can set a preferred connection list and make the private connection connect first.

            doesn't completely solve your issue but should help.

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