The European TCSEC criterion is divided into two modules of function and evaluation, mainly in the military, government, and business.

Normally, the port used by the FTP active mode server for data transmission is the TCP ( ) port.

In order to obtain criminal evidence, it is necessary to master the technology of intrusion tracking. Which of the following description of the tracking technology is correct? (Multiple choices)

Which of the following are necessary for firewall dual-machine hot backup scenarios? (Multiple choice)

Which of the following about the difference between pre-accident prevention strategies and post-accident recovery strategies is correct? (Multiple choice)