Wifi connecting but not gettind DHCP address with Security turned on

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Wifi connecting but not gettind DHCP address with Security turned on

Okay I have wired one.

Wifi works fine if there is no security turned on.
it gets a DHCP address and I can happily surf the web.
Turn on Security, the iPad talks to the Router and the Router show that it's MAC address is connected, but I can't get a DHCP address and if I do a Static it still doesn't connect.

Now I am using an older Router a Linksys BEFW11S4 which only supports B but it works fine with my iBook G4 with Airport Extreme card.

I have tried the Reset (Holding the Home and Power buttons for ten seconds until the Apple Icon shows up) and I still get a 169.254.x.x APIPA address.

Do I need to Turn off the Wireless part of this router and get a new wireless router?

Are only 802.11g/n supported with the iPad? the iPad and Router works together without security so that can't be right.

Is WEP not supported? No because, both the Router and the iPad are telling me that the iPad is connected to the Router, I just can't get a DHCP address or use a Static one. It is like someone forgot something in the code, if you are using WEP.

Any Clues as to what is happening would be nice.

Mac Mini G4, iBook G4, iPad, Mac OS X (10.4.11), a few windows puters

Posted on Apr 5, 2010 9:17 AM

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Answer 1

Apr 5, 2010 9:50 AM in response to Haslor

Just based upon what you've said is ALMOST enough information, but not quite.

What size WEP key do you have? a 64 bit key or a 40 bit key?

In other words, how many characters is your password?

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Answer 2

Haslor Author

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Apr 5, 2010 11:22 AM in response to AlphaBetaOne

Actually I can generate both a 64 or 128 bit key on the Linksys

My iBook G4 connects Flawlessly with 128bit WEP using the same password I am giving the iPad.

Again the iPad Connects, passed the Password Challenge, and both the Router and the iPad state it is connected, but will not obtain a DHCP address and the Data does not flow.

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Answer 3

Apr 5, 2010 11:40 AM in response to Haslor

That actually answered the question, whether or not passwords were identically matched and the same size.

And, you're certain that the iPad is set for DHCP and not manual? Otherwise that sounds quite a bit strange to me.

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Answer 4

Haslor Author

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Apr 5, 2010 11:44 AM in response to AlphaBetaOne

Yes it is DHCP and even if I choose Static and type in an address for my Network it still doesn't work.

Right now I have a 169.254.x.x address in the DHCP area and if I press the Renew Lease it comes back with the same one.

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Answer 5

Apr 5, 2010 11:56 AM in response to Haslor

You said you type in a 128 bit key right? Try a 64 bit key on your router and see if THAT will work, if so, then the iPad probably isn't successfully able to use a 128 bit key.

Just a thought....

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Answer 6

Apr 5, 2010 11:58 AM in response to Haslor

Silly trick - works sometimes on some routers - put a $ sign in front of your password and see if that helps.

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Answer 7

Haslor Author

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Apr 5, 2010 12:06 PM in response to Haslor

Okay on the off chance that things were stupid, and this was pretty weird and headed in that direction, I typed in the Hex code for the Pass Key, into the iPad. Started it with a "$" and then the long hex string.

Oh yeah that was it I am not working... just fine.

So something is a miss somewhere.

But Hey I am Working so I am Happy.

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Answer 8

Haslor Author

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Apr 5, 2010 12:09 PM in response to Graham Outterside

I was typing my message as you were typing.

It is great when you solve your own problem after banging your head against the wall.

Thanks all, I hope this helps someone else.

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Answer 9

Apr 5, 2010 12:22 PM in response to Haslor

That's great!! Glad you got it working, and great suggestion Graham.

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Answer 10

markmal

Level 2

198 points

Apr 5, 2010 1:19 PM in response to Haslor

how do you know the hex code for the pass key? where do you find that?

thanks!

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Answer 11

Apr 5, 2010 1:21 PM in response to AlphaBetaOne

Make that the third time its ever worked ..... I won't tell you how many times it didn't !

Thank you all - enjoy your surfing !

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Answer 12

Apr 5, 2010 1:21 PM in response to markmal

http://centricle.com/tools/ascii-hex/ might work.

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Answer 13

Haslor Author

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Apr 5, 2010 2:18 PM in response to markmal

the hex key is shown in your Router, when you sent the PassKey, if you don't administrate your Router, then you may have to get with the Administrator to get the Hex Key, it will be a long Hexadecimal string "3a7cb8a1" something like that. and to use it you will need to put a $ at the beginning.

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Answer 14

luvlabs

Level 4

3,620 points

Apr 5, 2010 5:04 PM in response to Haslor

Apple WEP implementation is different on the touch, iPhone, and iPad. With the following restrictions in mind, you can create and use a password: 48 bit (5 characters); 128 bit (13 characters). You can always use the hex key from the key1 field in the router software or the one on the builders plate.

This is due purely to the way Apple chose to parse the alpha numeric passwords.

Your best bet, from a number of security standpoints and ease of implementation, is to use WPA2-psk for encryption.

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Answer 15

fred93

Level 1

4 points

Apr 5, 2010 5:53 PM in response to Haslor

I had this same problem. I turned WiFi off and back on a few times, and finally DHCP worked.

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