D-Link and wireless security

annk

Administrator
Original poster
Staff member
Apr 18, 2004
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Somewhere over the rainbow
I have a D-link DI-514 router. Two PB´s are connected (wireless), and one Linux box is plugged into the router. For 2 years now, it´s been working fine. I just plugged it in and it worked.

Lately, I´ve noticed that the connection sometimes slows down dramatically. After eliminating various reasons, I have decided the most likely cause is neighbors using our bandwidth. I haven´t done anything about security, and I can see my neighbors´ wireless systems on my screen, so I assume they´re seeing mine.

I´ve now learned how to access the online configuration tools. After searching Mac rumors, I´ve learned I should disable SSID, and enable WEP. Unfortunately, my model doesn´t support WPA (I´ve already upgraded the firmware, from July 2004). Whenever I do these things, the computer just stops when I click "Apply". The window that says "the device is restarting" never changes, and when I finally click on "continue", my changes are gone, along with the wireless access. I´ve ended up restarting the router several times.

In addition, I´d like to restrict the wireless access to the specific MAC numbers of our three computers, but I don´t know how to find them on each computer...????

I´ve played around and tried to follow the instructions I´ve found, but have managed to completely eliminate our wireless access each time. So now I need help before I dare to try again.

Anyone have any ideas, or experience with this specific model? If I have to, I´ll get a newer, better, and most likely more expensive router. But it would be great to just improve security on what I have.
 

grapes911

Moderator emeritus
Jul 28, 2003
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Citizens Bank Park
You can get the MAC address via command line:

On a Mac via terminal:
> ifconfig | grep ether
Note: Each mac may have both. One wireless and one wired.

On a linux box
> ifconfig | grep HWaddr

On both, its the number in this form:
xx:xx:xx:xx:xx:xx
 

annk

Administrator
Original poster
Staff member
Apr 18, 2004
12,918
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Somewhere over the rainbow
But why do I get two MAC numbers on my PB?

Now I've tried the above advice on my PB, typed ifconfig | grep ether in Terminal. But I get two numbers, listed on top of each other. Both have "ether" in front of them.

In About this Mac, under Network- locations, I see the MAC number, and it is one of the two numbers I got in Terminal. So my problem in so far as finding my MAC number, is solved. But why did I get two MAC nrs in Terminal?
 

ghostee

macrumors 6502
Feb 25, 2004
286
0
Villa Park, IL
You saw the MAC addresses for your ethernet (wired) and airport (wireless) adapters. If you type "ifconfig" in terminal, it will provide you the full information. You will see two adapteers, en0 and en1. One of them, most likely en0 will say its media type is 10baseT. This is your ethernet adapter. The other one, most likely en1, will be your airport card.