Modem and airport express won't automatically assign IP addresses

By bluins
Jul 27, 2010
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  1. Hi all,

    The first computer I connect to the wireless works fine, but I have had to self-assign IP addresses for other computers/devices using the 10.0.1.x spectrum. I originally thought it was a problem with my airport express. However, my roommate recently tried to plug directly to the modem and his computer did not get an IP address (he changed his settings to allow for an automatic assignment). Is this something I can fix on my own or do I have to call the ISP and maybe get the modem replaced? Or is it easy enough they can diagnose over the phone? Any advice or thoughts would be greatly appreciated. Thanks.
  2. jobeard

    jobeard TS Ambassador Posts: 13,026   +221

    FIRST, make sure your firewall allows port 67 & 68 access both ways.

    What system is this? and are you running the Windows FW or some 3rd party?


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