In the dual-system hot backup, when the slave does not receive the hello packet of the HRP sent in the HRP hello packet period, the slave device is considered to be faulty.
When an attack occurs, many packets are found on the attacked host (1.1.129.32) as shown in the figure. According to the analysis of the attack, what kind of attack is this attack?
Is the correct statement about TCP proxy and TCP reverse source probing?
When there are a large number of BFD sessions in a system, what mode can be used to prevent BFD detection when the cost of sending BFD control packets periodically affects the normal operation of the system?
112. The ESP only verifies the IP payload and can perform NAT traversal, but the ESP encrypts the Layer 4 port information and causes the PAT function to be unusable. This problem can be solved by using the IPSec transparent NAT function, which encapsulates the ESP packet in the UDP header and comes with the necessary port information to make the PAT work normally.
