A network technician is concerned that an attacker is attempting to penetrate the network, and wants to set a rule on the firewall to prevent the attacker from learning which IP addresses are valid on the network. Which of the following protocols needs to be denied?
A. TCP
B. SMTP
C. ICMP
D. ARP
A network technician is concerned that an attacker is attempting to penetrate the network, and wants to set a rule on th
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A network technician is concerned that an attacker is attempting to penetrate the network, and wants to set a rule on th
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