On Mon, 27 Aug 2007 11:24:01 -0700, Commander Data
<> wrote:
>
>"Chuck [MVP]" wrote:
>> If you're connecting to the WiFi AP, but getting a "169.254.x.x" address (that's
>> APIPA aka "limited or no connectivity"), then DHCP services aren't available.
>> Either there is no DHCP server, or DHCP is using MAC address filtering.
>
>Chuck thanks for the quick response. Your answer makes sense from a
>"limited connectivity" standpoint, if anything, the XP OS should have said:
>NOT CONNECTED since at the time I encountered this problem, nowhere in the
>available SSIDs (hidden or not) exists a NETWORK with 169.254.x.x IP address
>range. Recall, I was trying to connect to an existing WIFI source with "full
>bar signal strength and WEP encrypted. Thus if I tried to connect to it
>without supplying the correct password, it should have returned "UNABLE TO
>CONNECT (due to password failure) status, instead of indicating a false
>status that I am connected to it, albeit with no access to the internet. I am
>really not connected unless I have an assigned IP by the DHCP server. It is
>like: "I can knock on the door, but if the door is not open, I cannot get in".
APIPA addresses were designed so any group of computers, without an available
DHCP server, can communicate among themselves. Limited connectivity means the
ability to communicate only with other computers using the 169.254/16 subnet, it
doesn't mean no connectivity. You don't HAVE to have an IP address assigned by
a DHCP server to have connectivity, you just have to have a unique IP address on
the same subnet as other computers.
So it's possible that the owner of the AP has it open, but with no DHCP server.
This lets anybody who knows how to setup their computer, to use it, without
dealing with authentication. It's a form of security by obscurity.
You knocked on the door. They opened a window, that you can't see, but their
friends know to crawl though.
--
Cheers,
Chuck, MS-MVP 2005-2007 [Windows - Networking]
http://nitecruzr.blogspot.com/
Paranoia is not a problem, when it's a normal response from experience.
My email is AT DOT
actual address pchuck mvps org.