In an attempt to secure his wireless network, Bob implements a VPN to cover the wireless communications. Immediately after the implementation, users begin complaining about how slow the wireless network is. After benchmarking the network’s speed. Bob discovers that throughput has dropped by almost half even though the number of users has remained the same.Why does this happen in the VPN over wireless implementation?
Answer(s): B
By applying VPN the access point will have to recalculate all headers destined for client and from clients twice.
In an attempt to secure his wireless network, Bob turns off broadcasting of the SSID. He concludes that since his access points require the client computer to have the proper SSID, it would prevent others from connecting to the wireless network. Unfortunately unauthorized users are still able to connect to the wireless network.Why do you think this is possible?
All access points are shipped with a default SSID unique to that manufacturer, for example 3com uses the default ssid comcomcom.
In an attempt to secure his 802.11b wireless network, Ulf decides to use a strategic antenna positioning. He places the antenna for the access points near the center of the building. For those access points near the outer edge of the building he uses semi-directional antennas that face towards the building’s center. There is a large parking lot and outlying filed surrounding the building that extends out half a mile around the building. Ulf figures that with this and his placement of antennas, his wireless network will be safe from attack.Which of the following statements is true?
Answer(s): D
Which of the following is NOT a reason 802.11 WEP encryption is vulnerable?
Answer(s): C
The lack of centralized key management in itself is not a reason that the WEP encryption is vulnerable, it is the people setting the user shared key that makes it unsecure.
Which of the following is true of the wireless Service Set ID (SSID)? (Select all that apply.)
Answer(s): A,B
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