VPN tunneling technology and DDN line like the link to achieve security by building physical channel.
Answer(s): B
The main scope of NAT host visits in the same security domain, you need to convert the IP address of the target host via NAT outbound command.
In GRE VPN applications, the network physical interface and Tunnel interfaces added to the same security zone, you can reduce the inter -domain packet filtering policy configuration.
Answer(s): A
In the WLAN configuration, if the authentication type is set to open system authentication, all clients will request certification by certification.
Stateful inspection firewall session table to track the use of a variety of active TCP sessions and UDP sessions, which decided to establish a session by the access control list, only when a packet associated with the session will be forwarded.
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