Which of the following is a best practice in managing firewalls?
A) Telnet (terminal emulation) access to all internal servers from the public networks should be open
B) The firewall device should be accessible directly from the public network
C) All traffic from the trusted network is filtered
D) All Internet Control Message Protocol (ICMP) data should be denied

Question

Quizplus · Accepted Answer

Denying all ICMP data is a best practice because ICMP can be used for network reconnaissance and attacks, though some ICMP types may be allowed for troubleshooting.

Which of the Following Is a Best Practice in Managing