HCIA-Security V4.0 Exam
Last Update Jun 19, 2026
Total Questions : 153
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Which layer of data packets does a packet filtering firewall check?
3-tuple NAT allows external devices to proactively access internal PCs through translated addresses and ports. Even if no security policy is configured on the firewall, the firewall allows such access packets to pass through.
As shown in the figure, what is the range of the AH protocol authentication range in transmission mode?
TESTED 19 Jun 2026
