Wireless interference?

By scottboy
Jan 18, 2006
  1. I've got two laptops - Dell Latitude D110 (Centrino) and Compaq Armada with a Linksys WPC54G card, both running XP SP2 and connecting to a Belkin F5D7632 router - 802.11g, WPA. The laptops have static IP addresses and DNS servers and I've checked that the IP addresses are different. Either laptop works fine, but when one of them is connected, the other won't. The icon inthe system tray says connected at 54MBps, but when I try and browse the web my browser says it can't find the site at (for example)

    I've tried switching one laptop to DHCP but it doesn't help.

    Any ideas as to what's going on?

  2. jobeard

    jobeard TS Ambassador Posts: 9,330   +622

    DHCP is not your problem nor the solution.

    check the router and both laptops to ensure that they are ONLY connecting
    at the 54mb(G) rate and do not attempt either g/b rates
  3. scottboy

    scottboy TS Rookie Topic Starter

    Thanks - all my devices are already set up to work on 11g only. This may be a red herring, but I changed from WPA to WEP last night to see if it made any difference and hey presto both laptops connected. I'm not desperately happy about relying on WEP, but I suppose it's better than nothing.
  4. jobeard

    jobeard TS Ambassador Posts: 9,330   +622

    yep! it's a reasonable 'due deligence approach', but if someone is determined, they can break in.

    hint: if the firewall is configured correctly, then all they get is a free ride to the Internet.

    1) use static IP addresses for YOUR lan systems, mapped from .1 thru .x
    2) declare ,1-.x as trusted allow in/out ...1 thru ...x tcp+upd all ports
    ....... (the default will then deny everything ...x+1 and above
    ........ which includes the .255 broadcast, but don't worry about it)
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