A.All traffic is permitted from the inbound to the outbound interface upon successful authentication of the user.
B.A specific access profile is retrieved from a TACACS+ or RADIUS server and applied to an IOS Firewall based on user provided credentials.
C.Prior to responding to a proxy ARP，the router will prompt the user for a login and password which are authenticated based on the configured AAA policy.
D.The proxy server capabilities of the IOS Firewall are enabled upon successful authentication of the user.

A.network-based application recognition （NBAR）
B.authentication proxy
C.stateful packet filtering
D.AAA services
E.proxy server
F.IPS