Abstract:

In the procedure of three-way handshake of transmission control protocol connection establishment,it involves the management of half-connection and connection tables.However,in the famous networks simulator NS2,there is only a formal description instead of a concrete and complete implementation for the procedure of TCP connection establishment.An improvement was beed made on the point.Table structures for half-connections and connections are added,and the way of managing half-connection table in Linux kernel is also imported into NS2.Simulation results show that it is clear to monitor the change in half-connection table in the TCP connection establishment procedure,and thus the requirement of simulating the connection establishment procedure in studies such as protection from TCP SYN flooding attack can be met.

Key words: network simulation, transmission control protocol, connection establishment, half-connection