Which of the statements concerning proxy firewalls is correct?

Proxy firewalls introduce processing overhead for proxying each connection, which typically decreases network speed rather than increasing it.

Proxy firewalls centralize all application traffic through a single inspection point, which is the opposite of decentralizing activity.

Blocking network packets from passing is the behavior of a packet-filtering firewall, not a proxy firewall, which instead relays traffic through a new connection rather than simply blocking or forwarding raw packets.

When a client connects to a proxy firewall, the firewall terminates that connection and then initiates a brand-new network connection to the intended destination server. This two-connection model hides internal network topology, allows content inspection, and prevents direct IP-level communication between the client and the external server.