Abstract: With the in-depth analysis on the functions and features of fusion ubiquitous network,the hardware system for collaborative protection described in this paper was implemented by adding two kinds of function entities namely fusion security access gateway and virtual reconstruction security control server (security control server).Meanwhile,the software logical system was implemented by policy subscription.Additionally,an evidence projection decomposition method was used on evidence combination,which provides a security situation analysis method.Thus,in fusion ubiquitous network,various peripheral networks could use existing heterogeneous access network to access the security ser-vice platform in the IP core network by security access gateway.Meanwhile,the command and data of security service can be sent to peripheral nodes in the other direction.

Key words: Fusion ubiquitous network,Security access gateway,Security control server,Situation analysis