Security policy conditions can be divided into multiple fields, such as source address, destination address, source port, destination port, etc. There is an "AND" relationship between these fields…

Security policy conditions can be divided into multiple fields, such as source address, destination address, source port, destination port, etc. There is an "AND" relationship between these fields, that is, only the information in the message and all fields If they all match, then this strategy is considered successful.