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how to define a wireless key

Posted on 2008-10-30
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Last Modified: 2013-12-09
hi guys,

i have a Cisco access point 1200 series,right now its unsecured,but want to put a key in for wireless accessonly for staff.

the access point has 172.31.185.220 what i want is to define a key which users can key in to connect to wireless.

how can i do it please help
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Question by:ammartahir1978
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LVL 28

Expert Comment

by:chilternPC
ID: 22846400
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Author Comment

by:ammartahir1978
ID: 22846475
thankx chiltern but i want to define my own key like s98s234fr how can i do that
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LVL 28

Expert Comment

by:chilternPC
ID: 22846502
in the setup
choose an encryption method from the set up screen   (WEP or WSK  ) and when you choose the encryption method it will then display a screen asking you to enter the passcode (the length of the passcode will depend on what encryption meothd you choose)

in the userguide above search for "Pre-Shared Key (Static WEP) " it explains there how to enter your own key
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Author Comment

by:ammartahir1978
ID: 22846527
but that is telling me to download a client utility in which ican define it is there any way i can define it through console or GUI?
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LVL 28

Accepted Solution

by:
chilternPC earned 250 total points
ID: 22846530
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Author Comment

by:ammartahir1978
ID: 22846616
i know what you are saying but if you see that want me to download a utility i was trying to do it on the web console,i cant download the utility on every client pc
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LVL 28

Expert Comment

by:chilternPC
ID: 22846641
sorry - didn't mean the PC utility - the user guide for the console should define very similar technique.

log on to the console  use the menu to find the wireless/security section and choose an encryption method and set your key.
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Author Comment

by:ammartahir1978
ID: 22846657
yes i am logged on to the GUI and the only encrystion i can see in WEP 128bit and 40 bit
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LVL 28

Expert Comment

by:chilternPC
ID: 22846687
in WEP it should allow you to define a string (allbeit a set length )
may a presvious screen you can choose the encryption (WEP or others)
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Author Comment

by:ammartahir1978
ID: 22846700
it gives me an error that enter a hexadecimal number
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LVL 28

Expert Comment

by:chilternPC
ID: 22848279
WEP (depends on 64 or 128) but does need to be a hex number
if its 128 it got to be 13 hexadecimals digits (thats any COMBINATION OF  0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F)
if you choose another encryption say WPA-PSK  then this will let you enter a phrase such as "secretsquirrrel"  
you will have to find the section to change the encryption alogoritmn to WPA-PSK
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LVL 44

Assisted Solution

by:Darr247
Darr247 earned 250 total points
ID: 22848660
128-bit WEP can be entered as 13 HEX bytes (e.g. FF = one 8-bit byte), which totals up to 26 characters 0-9 + A-F.
64-bit WEP can be entered as 5 HEX bytes, which totals up to 10 characters 0-9 + A-F.

Whether it's 64-bit or 128-bit, the last 3 bytes (24 bits) are added by the client/host.

If you only enter 13 characters for a 128-bit key, WEP implementations will assume you've entered an ASCII passphrase and it will be transcoded to 26 HEX-legal characters whether they were HEX already or not.
e.g. if you enter just the 13 characters 0123456789ABC
it will be transcoded to the 26-character HEX-encoded string 30313233343536373839414243

That may or may not match the original 0123456789ABC depending on vendors (Dells connecting to Atheros-based APs seemed to have the most problems with it).
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LVL 28

Expert Comment

by:chilternPC
ID: 22848694
Darr247 -  Cool  - that explains alot!  (the error mesages one gets from  various routers don't explain it at all) - I'll make a nore of this info.
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Author Comment

by:ammartahir1978
ID: 22849499
hi Darr247/chilternPC,

i get that but i am installing 4 access point 1200 series , which AP1 on channel 1 then AP2 on changel 5 and so on with same SSID Name and HOSTNAME.

the problem i am having is if i connect to the wireless even it UNSEcured it gives me a limited connectivity, but if i assign an IP to my machine then it connects..why is that?

also i have tried finding the way to change the encryption method on HTTP but failed, is there a way i can define in through TELnet in to the AP or through COnsole port?

also i want to add an external ip to my PIX firewall so that they have access to the file in our office how can i do that?
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