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WEP enabled no internet. Disabled internet access

By sspara ·
I just set up a Linksys WT54G wireless router and it works great, but when I enable WEP I can connect to the wireless network fine and I have the correct password but I can't get to any web pages. As soon as I disable WEP I can surf all day long. Whats the deal?

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Been there, done that

by nepenthe0 In reply to WEP enabled no internet. ...

The Security professionals will surely scoff at the following suggestion, but it works for me, and I do not have 'intruders' on my wireless network.

1) disable WEP

2) determine MAC numbers for all the computer network cards on your wireless system

3) open Linksys router setup, click Wireless > Wireless MAC Filter

4) place a 'dot' in the radio button "Permit PCs listed below to access the wireless network"

5) manually enter the MAC numbers of authorized computers (use the Linksys wireless adapter MAC number)

6) periodically check for intruders: Wireless > Status > Local Network > DHCP Client Table. If you see a MAC number there that you never authorized, you have an intruder.

By disabling encryption, access and transfer speeds are significantly enhanced. If you can safely disable encryption, do so.

Rick/Portland, OR

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RE: Been there, done that

by sspara In reply to Been there, done that

This is not an appropriate solution as my wireless connection is for visitors and up to 10 or 20 constantly changing employees. I can't constantly be inputting MAC addresses. I just want to give approved users the password and be done with it. Does anyone have a solution for my problem?

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Sorry, that's realllllly bad advice!!!

by robo_dev In reply to Been there, done that

Any script kiddie could get on that network and in less than a minute, own all your computers.

Even worse, that intruder is going to deposit YOUR IP address onto the logs of some website monitored by Dateline NBC or one of those three-letter-agencies.

WEP is not perfect, but it's better than nothing. On most APs, encryption gives a speed penalty of 10% or less.

Mac address security is false security. It's like hiding the key under the mat, but putting it in the middle.

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When you say 'password' that's your problem....

by robo_dev In reply to WEP enabled no internet. ...

On the WT54G you need to enter a WEP KEY, and a matching WEP key on the client.

If you enter a WEP 'password' or 'passphrase' that generates a pseudo-random WEP key, which is NOT what you want.

There are typically four slots for WEP keys, Key 1,2,3,4. You must enter a 26 character wep key for key #1 on the router and a matching 26 character wep key for key #1 on the client.

A tip for wep keys that you can remember is to combine two phone numbers you know until you run out of digits. So....

one number+ second one + first one again
2165551212 2167341212 216555

(without the spaces, that's your 26 character, 128bit wep key)
21655512122167341212216555

The content of the wep key matters not, from a cryptographic standpoint,

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RE: When you say 'password' that's your problem

by sspara In reply to When you say 'password' t ...

whoever had this router set up before me had WEP enabled and all clients had to enter was the passphrase to connect. Your saying each client that wants to connect has to type in that long number? Then what is the passphrase section for. I'm lost.

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Be careful that it's the WEP passphrase and not the WPA password

by robo_dev In reply to RE: When you say 'passwor ...

Many WLAN clients don't know about WEP passphases...for example the native Windows XP WLAN drivers only allow you to enter the key.

Be careful that you're not entering the WPA password on the client. WPA password is not at all the same as a WEP passphrase.

WEP passphrases tend to be very vendor specific (brand A passphrase won't work with brand B passphrase)

Or if you were using workstations with Cisco or d-link wlan adapters connecting to a netgear router, cisco or d-link do not know about netgear passphrases, in my experience.

If the WLAN clients and the AP are the same manufacturer, then the passphase thing may work, otherwise all bets are off.

The 'guaranteed to work' setup is to enter a wep key.

Windows does give you the option of storing that info on a USB drive so you can distribute it to each client without typing that horrible 26 character key.

http://www.smallbusinesscomputing.com/webmaster/article.php/3678561

There are a couple of variables to making the wlan clients work....you can use the Windows built-in 'WLAN zero configuration' system, or you can use the WLAN utility/client that ships with the Client WLAN adapter.

Further, there are ALWAYS issues with various versions of those WLAN client drivers.

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RE: When you say 'password' that's your problem

by sspara In reply to RE: When you say 'passwor ...

OK I'm a moron. I needed to implement WPA not WEP. I got them confused. All is good now. Thanks for the help though.

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Those TLAs are a PITA, no?

by robo_dev In reply to RE: When you say 'passwor ...

TLA = Three letter acronyms

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