A security administrator is reviewing the web logs and notices multiple attempts by users to access: http://www.comptia.org/idapsearch?user-*
Having identified the attack, which of the following will prevent this type of attack on the web server?
A. Input validation on the web server
B. Block port 389 on the firewall
C. Segregate the web server by a VLAN
D. Block port 3389 on the firewall