Firewall rulesets should be as specific as possible with regard to the:
ANetwork traffic
BNetwork transfer
CNetwork trigger
DNetwork trimming
Answer & Solution
Correct answer: A. Network traffic
1. A broad rule permits more than it intends to.
2. Precision limits what actually gets through.
3. Firewall rulesets should be as specific as possible about the network traffic they control.
4. So the answer is network traffic.
_Source: NIST SP 800-41 Rev. 1, 'Guidelines on Firewalls and Firewall Policy'_
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