The Session Border Controller (SBC) (or similar firewall type device) must perform stateful inspection and packet authentication for all VVoIP traffic (inbound and outbound) and deny all other packets.

No profile (default benchmark)

I - Mission Critical Classified

I - Mission Critical Public

I - Mission Critical Sensitive

II - Mission Support Classified

II - Mission Support Public

II - Mission Support Sensitive

III - Administrative Classified

III - Administrative Public

III - Administrative Sensitive