【多选题】
What are two benefits of using NAT?（）
A、NAT protects network security because private networks are not advertised.
B、NAT accelerates the routing process because no modifications are made on the packets.
C、Dynamic NAT facilitates connections from the outside of the network.
D、NAT facilitates end-to-end communication when IPsec is enable.
E、NAT eliminates the need to re-address all host that require extemal access.
F、NAT conserves addresses through host MAC-level multiplexing.
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