多项选择题

Which three security concerns can be addressed by a tunnel mode IPsec VPN secured by AH？（）

A.data integrity
B.data confidentiality
C.data authentication
D.outer IP header confidentiality
E.outer IP header authentication

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多项选择题

Which three security concerns can be addressed by a tunnel mode IPsec VPN secured by ESP？（）

A.data integrity
B.data confidentiality
C.data authentication
D.outer IP header confidentiality
E.outer IP header authentication

多项选择题

You are creating a destination NAT rule-set. Which two are valid for use with the from clause？（）

A.security policy
B.interface
C.routing-instance
D.IP address

单项选择题

Which statement is true about a NAT rule action of off？（）

A.The NAT action of off is only supported for destination NAT rule-sets.
B.The NAT action of off is only supported for source NAT rule-sets.
C.The NAT action of off is useful for detailed control of NAT
D.The NAT action of off is useful for disabling NAT when a pool is exhausted.