Hampton is the senior security analyst for the city of Columbus in Ohio. His primary responsibility is to ensure that all physical and logical aspects of the city’s computer network are secure from all angles. Bill is an IT technician that works with Hampton in the same IT department. Bill’s primary responsibility is to keep PC’s and servers up to date and to keep track of all the agency laptops
that the company owns and lends out to its employees. After Bill setup a wireless network for the agency, Hampton made sure that everything was secure. He instituted encryption, rotating keys, turned off SSID broadcasting, and enabled MAC filtering. According to agency policy, only company laptops are allowed to use the wireless network, so Hampton entered all the MAC addresses for those laptops into the wireless security utility so that only those laptops should be able to access the wireless network.
Hampton does not keep track of all the laptops, but he is pretty certain that the agency only purchases Dell laptops. Hampton is curious about this because he notices Bill working on a Toshiba laptop one day and saw that he was on the Internet. Instead of jumping to conclusions, Hampton decides to talk to Bill’s boss and see if they had purchased a Toshiba laptop instead of the usual Dell. Bill’s boss said no, so now Hampton is very curious to see how Bill is accessing the Internet. Hampton does site surveys every couple of days, and has yet to see any outside wireless network signals inside the company’s building.
How was Bill able to get Internet access without using an agency laptop?
A.
Bill spoofed the MAC address of Dell laptop
B.
Bill connected to a Rogue access point
C.
Toshiba and Dell laptops share the same hardware address
D.
Bill brute forced the Mac address ACLs
A is the correct answer…
From the Q:
“Hampton entered all the MAC addresses for those laptops into the wireless security utility so that only those laptops should be able to access the wireless network” so he would have to spoof the MAC to access the company network
AND
since “Hampton does site surveys every couple of days, and has yet to see any outside wireless network signals inside the company’s building.” there are no rouge access points to join…
So if the answer was ‘A’, and the MAC address was spoofed then how did the admin know it was a Toshiba?
It may be possible in this case that the rogue AP without the MAC filter(s) could have permitted ‘non-Dell’ access, in which case that answer could be correct.
However, if the rogue AP was the issue/answer then where did the admin see the Toshiba traffic?
C & D are not feasible; the question seems to be missing something?
“He notices Bill working on a Toshiba laptop one day and saw that he was on the Internet.”
Hampton *saw* Bill working on a Toshiba laptop. Answer is A.
how can Bill connected to a Rogue access point, as there’s the wireless security utility that has MAC database?
Bill have to spoof MAC first.
I answered A on this one as well. The fact that “Hampton does site surveys every couple of days, and has yet to see any outside wireless network signals inside the company’s building.” reduces but does not eliminate the Rouge AP theory. The best answer is therefor A but only if Bill has insight into the mac filtering rule. I believe the author of the question was trying to indicate a rouge ap of the CDMA/4g(smart phone) illth 🙂
b