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A proxy firewall protects against which type of attack?
A. cross-site scripting attack
B. worm traffic
C. port scanning
D. DDoS attacks
Correct Answer: A
Explanation/Reference:
Cross-site scripting involves the injection of malicious scripts into web pages, where they can be used to gain access to user’s systems or to sensitive information. The Cisco ACE Web Application Firewall provides rules that inspect messages for JavaScript, ECMAScript, VBScript and other types of code artifacts that could indicate a cross-site scripting attack.
Reference: http://www.cisco.com/c/en/us/td/docs/app_ntwk_services/data_center_app_services/ace_waf/v60/gettingstarted/guide/acewafgsg/waf_gs_XSS_attacks.html
IPS or Firewall protects from port scanning, the proxy is behind these devices!
C. Port scanning