TCP/IP HTTP NAT Method and Apparatus for Identifying NAT Host Based on TCP/IP Header and HTTP Cookie

摘要

In the present embodiment, packets are acquired from the NAT device, packets are classified according to the operating system using the TTL field value, the Windows series classifies the hosts based on the source port field value, the Linux series classifies the hosts based on the time stamp field value, It is possible to accurately identify the number of hosts in the NAT outside the NAT without installing a separate program in the NAT by determining whether the host is a new host or the power state of the existing host based on the cookie information for the classified hosts, A NAT internal host identification device and method capable of identifying a specific host of the NAT.