My mum just bought a new router it is a linksys WRT54GR.
Sinds there is no update for the firmwire I still have firmwire 1.0.
But when I try to set a mac filter is says "invaled mac adress."
Even when I click prevent these mac adresses and I don't fill in anything.
I did not do anything special I just click at enable mac filtering.
Is there some step that I forgot?
When I click help and do it the same way as help has told me that I still have that problem.
What am I doing wrong?

Jonas Why are you using MAC filtering?

What this does is after you setup the security on the router it filters out the MAC address not on the access list. To get this to work you need to know the full MAC address of your machines and than enter them into the list.

From the owners manual

Enable MAC Address filtering. MAC Address filtering will allow you to provide access to only
those WIRELESS NODES with certain MAC Addresses. This makes it harder for a hacker to access your network with a random MAC Address.





Yes I was trying to use the MAC filter to ONLY allow the MAC addresses who are listed but when I copie them the router always tell me invalid MAC addr. even when it is 00:00:00:00:00:00 It works fine at my dads place but it seems like that Firmewire isn't completly finished. is this possible?
I do know how to enable MAC filtering I did it before but it isn't working in this case?

Jonas

Setting-Up Wireless MAC Filtering to Prevent Users from Connecting


Question

I want to prevent others from connecting to my wireless network without using any password, how can I do this?

Answer


Wireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your network’s radius. You can either permit or prevent specific wireless computers access to your wireless network.

NOTE: Before setting up MAC filtering, make sure that the wireless devices that you want to allow are currently wirelessly connected to the router and are able to access the network.

Checking Computer’s Wireless MAC Address

NOTE: To get the PC’s MAC Address using Windows 98 or ME, click here.

Windows XP/2000

Step 1:
Click Start on your toolbar, then Run.



Step 2:
When the Run window opens, type “cmd” in the OPEN field, then click the OK.



Step 3:
When the MS DOS Prompt appears, type “ipconfig/all” then [Enter].

Step 4:
Take note that Physical Address is your computer’s MAC Address.



Windows 98/ME

Step 1:
Click Start on your toolbar, then Run. A window similar to Step 2 will appear.



Step 2:
Once the Run window appears, type “winipcfg” in the Open field, then click OK.



Step 3:
When the IP Configuration window appears, select the Network Adapter that the PC is using from the drop-down menu.



Step 4:
Take note that Adapter Address is your computer’s MAC Address.



Preventing Wireless PC from Accessing Your Network

Step 1:
Access the router’s web-based setup page. For instructions, click here.

Step 2:
When the router’s web-based setup page appears, click the Wireless tab and click Wireless MAC Filter.



NOTE: If the screen on the router’s web based setup page looks different, click here.

Step 3:
Set Wireless MAC Filter to Enable and select Prevent from the options.



NOTE:Prevent will deny wireless connectivity to the wireless computers whose MAC addresses are listed on the MAC Filter List. Whereas, Permit will allow wireless connectivity to the wireless computers whose MAC addresses appear on the MAC Filter List.

Step 4:
Click Edit MAC Filter List. This will open the MAC Address Filter List window. You may enter the MAC address of the wireless computer that you want to deny access to your wireless network.



Step 5:
Click the Wireless Client MACList and click Update Filter List to view the MAC addresses of all wireless computers connected to your wireless network.



Step 6:
Check the MAC addresses listed and check Enable MAC Filter of the MAC Address you want to prevent access to your wireless network.



Step 7:

Click .Close

Step 8:

Click save settings on Wireless MAC Filter List.

Step 9:

Click save settings on the Wireless MAC Filter page.



© 2007 Cisco Systems, Inc. All rights reserved.
That's what I tried and did before but my point is: It doesn't work.
and my question is why?

Jonas Have you tried to enter the MAC address differently?

12:23:as: etc....

1223as etc....

12-23-as- etc....
No but standard they are all 00:00:00...
And if I try to change it it automatically change back to 00:00:00...

Jonas Ok I did a little home work on this one....

You have to use a machine that is not wireless to set this up.
Use the comand on the wireless machine ipconfig /all to get the MAC address
Than go back to the none wireless machine to enter the MAC address. 1a:55:qw:78: etc. is the correct format.

If you still have problems I talked to a guy from Linksys who says to reflash your frimware. You can get it here....


http://www.linksys.com/servlet/Satellite?c=L_CASupport_C2&childpagename=US%2FLayout&cid=1166859762494&pagename=Linksys%2FCommon%2FVisitorWrapper&lid=6249437314B278&displaypage=download#versiondetail

This is for your router and version number 1 Be sure to check this because you can toast a router with the wrong frimware.

For more help you can try a search here.....

For more information, you can also visit our knowledge base located at http://www.linksys.com/kb. The site contains troubleshooting tips, how-to instructions, as well as solutions to common issues relating to all Linksys products.


Hope that this helps.....

Alright thanks for helping this might be the problem.
I'm not at my mums house but I 'll try it as soon as I get there.
I have the default firmwire so the 1.0 isn't an update is it?
Thanks for TAKING the time to help me I really appreciate that I also looked much but didn't find anything.
And oh the firmwire automattecly gives a list of the MACs who are connected so you just can confirm them and they pop up in the MAC allowed list. (I love that new adjustment!!)

Jonas I tried trough cable....
No luck!
I'm blaming the firmwire.
I have done this several times in our home network.
To allow my PS3 and PSP and there I had no problems.
But at my mums house it just wont work.
I'll wait for a firmwire upgrade and than change it to MAC security.
Now I'm just using WEP.
But MAC is safer.

Jonas