Go back to EC0-479 - EC-Council Certified Security Analyst (ECSA)

Question :-

You are assisting a Department of Defense contract company to become compliant with the stringent security policies set by the DoD. One such strict rule is that firewalls must only allow incoming connections that were first initiated by internal computers. What type of firewall must you implement to abide by this policy?
Packet filtering firewall
Circuit-level proxy firewall
Application-level proxy firewall
Statefull firewall

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