Which attack is mitigated by using Bounce Verification?

Which attack is mitigated by using Bounce Verification?

A. spoof

B. denial of service

C. eavesdropping

D. smurf

View Answer

Answer: B

Explanation:

Bounce Verification is a feature that mitigates denial of service attacks on Cisco ESA. A denial of service attack is an attempt to overwhelm a system or network with excessive traffic or requests, rendering it unavailable or slow for legitimate users. Bounce Verification prevents Cisco ESA from accepting bounce messages that are not generated by itself or by trusted hosts, reducing the load on the system and preventing backscatter spam.

Reference: User Guide for AsyncOS 15.0 for Cisco Secure Email Gateway, page 5-8.

Reference: https://www.networkworld.com/article/2305394/ironport-adds-bounce-back-verification-for-e- mail.html