SANS SEC504: Hacker Tools, Techniques and Incident Handling — Question 19

Which of the following steps can be taken as countermeasures against sniffer attacks? Each correct answer represents a complete solution. Choose all that apply.

Answer options

• A. Use encrypted protocols for all communications.
• B. Use switches instead of hubs since they switch communications, which means that information is delivered only to the predefined host.
• C. Use tools such as StackGuard and Immunix System to avoid attacks.
• D. Reduce the range of the network to avoid attacks into wireless networks.

Correct answer: A, B, D

Explanation

Using encrypted protocols (Option A) secures data transmission, making it unreadable to sniffers. Employing switches (Option B) enhances security by directing traffic specifically to intended devices, unlike hubs that broadcast to all. Reducing network range (Option D) limits exposure to potential sniffers, while Option C does not directly address sniffer attacks.