WRT54G as good neighbor to existing wired network

Discussion in 'Networking Issues' started by DavidWhite, Jan 23, 2006.

  1. DavidWhite

    DavidWhite Network Guru Member

    Existing wired network for company holds address of 172.17.21.*. This company has a Linksys WRT54G attached at

    The company now wants to use a wireless print server to allow use of a printer in an area with no network jacks. A Netgear WGPS606 has been purchased for that purpose. The WGPS606 can see the WRT54G with no problem.

    Now, everything behind the WRT54G holds an address of 192.168.1.*. There does not seem to be a way to disable NAT on the WRT54G. We want to;

    1) Attach a printer to the WGPS606 which can be accessed by any wired network user (i.e., users in the 172.17.21.* range).
    2) Still allow wireless users to access the Internet

    I believe that the WRT54G needs to be reconfigured to allow this to take place. I am very confused about the necessary settings. Ideas?
  2. crawdaddy

    crawdaddy Network Guru Member

    connect the upling to the rest of the network to one of the LAN ports, not the WAN. Then turn the internet connection section and DHCP off. voila! no more 192.168.1.x adresses and it should be accesible to everyone in the 172.17.21.x network since it's now on that network.
  3. DavidWhite

    DavidWhite Network Guru Member

    crawdaddy; thanks! I am still a bit confused. If I turn off DHCP and the internet connect settings, how will wireless users access the internet? I still; want to use WPA-TKIP to protect this network, and still want to allow mobile users to be able to connect.
  4. crawdaddy

    crawdaddy Network Guru Member

    if ur 172 network has DHCP running, then they just pick up a 172 adress, If DHCP is not running on the 172 network, then u'll need to set static ips for the wireless clients.
  5. SimonMackay

    SimonMackay Network Guru Member

    What you need to do is make the WRT-54G behave as an access point. To do this, you disable the DHCP function and connect the existing wired network to any of the LAN ports.

    Set up a unique SSID and enable WPA-PSK at least for security. To make the WPA-PSK key random, use the Windows Connect Now software as part of WinXP SP2. Here, fill in your SSID in the SSID box, select WPA and select that you are making a new network. Then, select "Set up a network manually", then click "Print Network Settings" in order to have your SSID and WPA key on a "crib sheet" for configuring the WRT-54G.

    You can also use RADIUS-managed WPA-Enterprise security on the WRT-54G if you are running a RADIUS server and it may work with some of the "small-business" RADIUS servers like some "hosted-RADIUS" services. This can be useful when you are after better security, especially with the ability to lock out users.

    To add mobile users to the network, you could then use Windows Connect Now and a USB memory key to "dump" WPA keys and other information to their portable computers.

    With regards,

    Simon Mackay
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