CCSA:
Controlling Network Traffic Managing firewalls and monitoring network traffic is the key role of a network Security Administrator. The firewall, or the Security Gateway with a firewall enabled, denies or permits traffic based on rules defined in the Security Policy. The following technologies are used to deny or permit network traffic:
• PacketFiltering
• Stateful Inspection
• ApplicationLayerFirewall
It's kind of a confusing question, I would have said threat prevention technically denies or permits network traffic too. For example the IPS blade can inspect network traffic and prevent it if is matches a protection. Anti-virus blade denies traffic if it matches a malicious signature.
TP blades do not allow traffic. If there is a match, they always prevent. the only other option is that the traffic does not match the protection and in that case the traffic was not allowed nor ignored, just not matched.
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