Network Security第 62 / 100 题
A firewall rule set should end with which type of rule to enforce a secure default posture?
a.An implicit or explicit deny-all
b.A permit-all to any destination
c.A rule allowing all ICMP
d.A rule opening all high ports
解析
A secure firewall enforces a default-deny posture, so any traffic not explicitly permitted is blocked by an implicit or explicit deny-all rule. This follows the principle of least privilege for network access. Permit-all rules undermine the firewall's purpose.
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