Security technology has different methods in different technical levels and fields. Which of the following devices can be used for network layer security protection? (Multiple choice)
On the surface, threats such as viruses, vulnerabilities, and Trojan horses are the causes of information security incidents, but at the root, information security incidents are also closely related to people and the information system itself.
______ is to configure user information (including the user name, password and various attributes of the local user) on the network access server. The advantage is that it is fast.
Which of the following VPNs cannot be used in Site to-Site scenarios?
A digital envelope refers to the data obtained by the sender using the receiver's _____ to encrypt the symmetric key[fill in the blank]*
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