In addition, by analyzing the state transition of certain objects in the initialization protocols on UCard, some references are given to construct protocols for the initialization object managemen.

An audit system model based on content analyses is proposed A brief implementation framework of the model of session rebuilding and protocol restore is presented In the end, efficient packetcapturing technology, sessionrebuilding technology and multithread protocol restore technology is analyzed deepl

It has been found that real-time data stream capture from high-bandwidth networks,high-performance multi-thread TCP/IP(transmission control protocol/Internet protocol) protocol stack,and protocol analysis platform based on PLUGINs have captured and assembled the information wonderfully.

Experiment results indicate that the performance of the data capture and protocol analysis have been improved remarkably.

With regard to the representative security threats to SIP, Session Initiation Protocol(SIP) secure authentication model based on strong authentication technology was put forward, and its security was analyzed.

Based on the Mobile IP and its sub Mobile IP, this scheme adopted the Session Initiation Protocol(SIP)and optimized the joint design of network layer mobility management and application layer mobility management.