A multinational manufacturing company in San Jose, California has deployed a perimeter firewall to protect its internal production networks. During a red team exercise, testers observe that the device monitors active TCP communications and allows traffic to continue only when packets correspond to recognized, previously established connections.
The firewall evaluates multiple header attributes across ongoing communications while operating inline at the network boundary.
From a firewall architecture perspective, what type of firewall is most likely in use at this perimeter?
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