in deploymentIPSec VPN, which of the following is the main application scenario of tunnel mode?
A. between host and host
B. Between the host and the security gateway
C. between security gateways
D. between host and server
in deploymentIPSec VPN, which of the following is the main application scenario of tunnel mode?
A. between host and host
B. Between the host and the security gateway
C. between security gateways
D. between host and server