Invalid IP from Router

[hoezaycuervo]

While waiting for my DSL to be installed later this week, I decided to setup my network without the WAN. (Mostly b/c all of my connections will be wireless). I setup the DHCP, WEP, etc. for the wireless aspect of the router and was able to connect on my laptop fine. Then I unplugged the router from my desktop which I was using to setup the router, and enabled the wireless card on the desktop. The card picked up the signal and prompted for the key. I enter the key and it connects to the network with an "Excellent" signal. My issue is that the desktop will not pull an IP from the router when using wireless. It shows up as "Invalid IP". It will pull an IP with a patch cable and my laptop will pull one wireless but not the desktop. Could it be confusing the router by having the same computer trying to use a different MAC when the previous lease on the IP has not expired? Also, how can it connect to the network an not pull an IP. All systems are XP Pro. Release/renew doesn't work. The router shows the desktop has a wireless connection, but the computer name is "unknown".

[Ghost_Hacker]

Could it be confusing the router by having the same computer trying to use a different MAC when the previous lease on the IP has not expired?

No, IPs are assigned to a MAC address not a "computer" so each MAC address will get it's own IP address assignment.



Also, how can it connect to the network an not pull an IP

It connects to the access point via the SSID and WEP key if WEP is enabled. Once connected if it fails to get an IP from a dhcp server Windows will assign itself an IP starting with 169.x.x.x.

If your IP is "169" then this is what has happened. The renew and release feature most times will not work with this "auto" assigned IP. ( Since it never got a lease or IP from a DHCP server there is nothing to renew or release ;) )

I would first disable and then reenable the card ( this restarts the "dhcp client" for that card ) to see if it will then get an IP from the DHCP server.


Good Luck :)

[hoezaycuervo]

Thanks for the help. I found the issue lies in how the WEP is setup. I have not figured out what causes it, but when WEP is disabled I have no problems. Is having to register the MAC on the router as secure/effiecient as WEP?

[classicsoftware]

YEAH:::::: :D

Ghost Hacker is back :D :D :D :D

Nice to see you here again. I have always benefited from your advice and now others will as well.....

[Ghost_Hacker]

Thanks for the help. I found the issue lies in how the WEP is setup. I have not figured out what causes it, but when WEP is disabled I have no problems.

Ahhhh, k you might want to look at your wep setup at both the router and the computer again. It possible that the key you typed in is wrong. Also look out for Windows XP it does not support using passphrases so you must type the key in directly.


Is having to register the MAC on the router as secure/effiecient as WEP?

I would use a MAC address access list, WEP and turning off broadcasting of the SSID as the default security for any wireless router. But if you can't get WEP to work the MAC access list and non-broadcast of your ssid should keep you safe from most drive by hackers and others in your 'hood who are trying to get a free internet connection http://www.pcguide.com/ubb/smile.gif ( EDIT: Be sure to change your default SSID too.)

But without WEP your data can be sniffed off the air when you use your connection, so if you have any network passwords or other data you don't want anyone to see then WEP is a must have. (Please note that credit card transactions are normally encrypted with SSL which will still be the case even if you don't enable WEP).


Hope this helps http://www.pcguide.com/ubb/smile.gif


Nice to see you here again. I have always benefited from your advice and now others will as well.....

Nice to be back..Hope I can still be as helpfully as before...I am kinda rusty at this http://www.pcguide.com/ubb/smile.gif

[hoezaycuervo]

I wouldn't say your rusty, you just answered all of my questions. You are exactly correct on the WEP. I was using 'Pass Phrase' instead of typing the key directly in. Go figure that Microsoft would make something incompatable. I am going to toy with getting the WEP back up and I already had changed the name of the SSID from default. Thanks for the help!

[bassman]

RUSTY????? HAAAAAA!!!!!
Your rust is probably more benificial then most of the fresh info from a lot of us :eek::D ;)
Glad to see you back