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Windows 7: New Laptop No Internet Access via Wireless

11 Jun 2010   #11
chev65

Windows 7 Ult, Windows 8.1 Pro,
 
 

Mac filtering is a new one on me and I'll have to remember that in case it comes up again. I have the Mac clone option but never needed to use it, not sure if I have a Mac filter or not.

Ok just found the setting and it relates to security. It says that with Mac filtering ON and allow computers listed to connect. Mac filters ON and denie computers listed to connect. Kind of confusing. Seems like this one should be off as default.

So you can filter it either way it seems or just set it to the OFF postition and have no Mac filtering at all. I just needed to hit advance wireless then the network filter tab.

So the new computers would need to be added to the list in order to keep this setting turned on. No wonder the Op needed to add the Mac address manually before. This might actually be a useful security feature if you were having problems with someone hacking through your WPA security. I have 24 computers I can add to my list.


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11 Jun 2010   #12
severedsolo

Windows 7 Ultimate X64 SP1
 
 

Honestly I think that MAC filtering is overkill. A strong WPA key is almost impossible to hack using a dictionary attack (which is the only way they can be got) It certainly has its uses, but a MAC address is easily cloned. anyone who knows how to get through a WEP key probably know's how to clone a MAC address too
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11 Jun 2010   #13
chev65

Windows 7 Ult, Windows 8.1 Pro,
 
 

I'm not sure cloning would be enough. From what this setting showed me there was no way to get a mac address with this setting turned on because it requires an authenticated DHCP computer name to be on the allowed list. It pays to use a seperate password for the router set up page also.

I wouldn't know how to hack past WPA either, depends on the password I guess. What I'm wondering is how could this setting have been turned on by default? Talk about confusing. Maybe a reset of the router would have got this setting back to normal. I always keep a .gws file on my desktop in case I need to reset my router, gets all my settings back instantly that way.
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11 Jun 2010   #14
severedsolo

Windows 7 Ultimate X64 SP1
 
 

With the right software, you can pick up the MAC address of all devices transmitting in range. then with WEP/WPA hacking software you can "spoof" your MAC address to look like one of the machines that is authenticated.

Example: I know your WPA key, but you have MAC filtering on. With this software i mentioned (obviously I won't mention any names) I can "spoof" my MAC address to look like yours. when the router asks for authentication my wireless card transmits your MAC address. the router thinking that I'm you then allows me access
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11 Jun 2010   #15
chev65

Windows 7 Ult, Windows 8.1 Pro,
 
 

Yes but it also requires a singular DHCP computer name not just the mac address in order to be issued an IP, or at least on my router it does. It would at least slow them down a little but seems hardly worth the hassle I agree. I doubt I could hack into my own system even if I tried LOL.
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11 Jun 2010   #16
severedsolo

Windows 7 Ultimate X64 SP1
 
 

Quote   Quote: Originally Posted by chev65 View Post
Yes but it also requires the singular DHCP computer name not just the mac address in order to be issued an IP, or at least on my router it does. It would at least slow them down a little but seems hardly worth the hassle I agree. I doubt I could hack into my own system even if I tried LOL.
By DCHP name do you mean the machine name? for instance on my PC Martin-PC?

As you may be able to tell... I've actually experimented with this stuff to test my own defences. WPA just would not fall, as I have a mixture of letters and numbers in my passphrase WEP... now thats a different story
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11 Jun 2010   #17
chev65

Windows 7 Ult, Windows 8.1 Pro,
 
 

Quote   Quote: Originally Posted by severedsolo View Post
Quote   Quote: Originally Posted by chev65 View Post
Yes but it also requires the singular DHCP computer name not just the mac address in order to be issued an IP, or at least on my router it does. It would at least slow them down a little but seems hardly worth the hassle I agree. I doubt I could hack into my own system even if I tried LOL.
By DCHP name do you mean the machine name? for instance on my PC Martin-PC?
Yes but they would need to get into the router and put the name on the list which requires hacking into the router as well. Come on now, I'm no dummy, anything can be hacked, I'm well aware of that. Did you really think otherwise? I only mentioned it as an extra layer of security, never said or mentioned about it being unhackable. Please spare me the inuendo.
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11 Jun 2010   #18
severedsolo

Windows 7 Ultimate X64 SP1
 
 

your router sounds like it has very strong defences... most routers as far as i'm aware just rely on MAC checking when it is enabled
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11 Jun 2010   #19
chev65

Windows 7 Ult, Windows 8.1 Pro,
 
 

Not that routers are hard to get into but I use a different 12 digit password for my router that isn't in a dictionary. It has a list for those mac addresses plus you need the DHCP assignment name on the list next to the correct MAC address,so if the name and the Mac address don't show up right next to each other the list then wireless DHCP won't work. Still I agree 100 percent, nothing is unhackable but I sure wouldn't know how to get into this one. Seems overkill to me.
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11 Jun 2010   #20
severedsolo

Windows 7 Ultimate X64 SP1
 
 

thats quite unusual. Here's mine, as you can see it just looks for MAC addresses, so a spoof would fool my router quite easily.

Of course I also have reserved addresses from the DCHP pool so i imagine that would create a conflict as the router would be trying to give it an IP address that has already been issued


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 New Laptop No Internet Access via Wireless




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