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GIAC GSNA Exam - Topic 4 Question 74 Discussion
Topic #: 4
Which of the following are the countermeasures against WEP cracking?
Each correct answer represents a part of the solution. Choose all that apply.
A user can use some countermeasures to prevent WEP cracking. Although WEP is least secure, it should not be used. However, a user can
use the following methods to mitigate WEP cracking:
Use a non-obvious key.
Use the longest key supported by hardware.
Change keys often.
Use WEP in combination with other security features, such as rapid WEP key rotation and dynamic keying using 802.1x.
Consider WEP a deterrent, not a guarantee.
Answer D is incorrect. SSID stands for Service Set Identifier. It is used to identify a wireless network. SSIDs are case sensitive text
strings and have a maximum length of 32 characters. All wireless devices on a wireless network must have the same SSID in order to
communicate with each other.
The SSID on computers and the devices in WLAN can be set manually and automatically. Configuring the same SSID as that of the other
Wireless Access Points (WAPs) of other networks will create a conflict.
A network administrator often uses a public SSID that is set on the access point. The access point broadcasts SSID to all wireless devices
within its range. Some newer wireless access points have the ability to disable the automatic SSID broadcast feature in order to improve
network security.
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