Network address translation (NAT) table entry synchronization method and related equipment

The embodiment of the invention discloses a network address translation (NAT) table entry synchronization method and related equipment, and relates to the technical field of computers and communication, the method comprises the following steps: receiving a first service message from first service equipment, the first service message comprising first network resource information; determining that a first table item matched with the first network resource information does not exist in the first NAT equipment; allocating second network resource information to the first network resource information, and generating a second dynamic table item according to the first network resource information and the second network resource information; performing NAT operation on the first service message according to the second dynamic table item to generate a second service message, and sending the second service message to the second service equipment; and determining that a predetermined number of first historical dynamic ta