Which of the following are the backup items that HRP can provide?
Using the ___ method of the Web proxy, the virtual gateway will encrypt the real URL that the user wants to access, and can adapt to different terminal types.[fill in the blank]*
In the authentication policy of the firewall, _____ allows the user to not need to enter the user name and password, but can obtain the corresponding relationship between the user and the IP, so as to carry out policy management based on the user[fill in the blank]*
When using passive mode to establish an FTP connection, the control channel uses port 20 and the data channel uses port 21. ( )[Multiple choice]*
Digital envelope technology means that the sender uses the receiver's public key to encrypt the data, and then sends the ciphertext to the receiver ( )[Multiple choice]*
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