Question: 3 1 . What does a packet filtering firewall do ? a . It checks a packet's content against a set of filter rules. b

31. What does a packet filtering firewall do?
a. It checks a packet's content against a set of filter rules.
b. It prevents SQL injection using input sanitisation.
c. It checks a packet header against a set of filter rules.
d. It checks for malicious cross-site scripting code.
e. It filters TCP packets on port 22.

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