A Mobile Access Security System Based On Android

With the popularity of mobile internet and mobile devices, the security of MobileAccess System face challenge. This paper presented a mobile access security system basedon Android. This system consists of three modules and timeline is before access, accessing,after accessed.Because most intranet do not have enough protection, mobile device must do healthcheck before access. Otherwise an unsafe device accessed in intranet will bring securityrisks. The health check module will do this function. After meeting security policydelivered by server, mobile devices can access the intranet.The mobility feature of mobile devices not only bring us convenience, but also madetunnel protection very hard. This system adopt VPN to encrypt the packets. As SSL havemuch advantage, such as simpler configuration and resumption mechanism, and thissystem realize a mobile SSL VPN, which can solve the problem of IP mobility and lowercompute capability. The SSL VPN adopted the port forwarding for solving the permissionproblem, and then design a tunnel protocol based SOCKS. All these function are finishedby security tunnel module and this is also the main point of the system. The prototypehave client and server, all packets between this two sides will encrypt by SSL.Finally, after accessed, a file encryption module is needed to protect the file security.Then we run some tests about performance of AES and DES on Android devices.The results show the mobile access security system based on Android performancegood in security and usability. It can meet the requirements of the mobile internet andperformance can be improved.