NEW Research About VPN Communication Based on Protocol of IPSec over Http
This paper first discusses the classic methods of covering communication to traverse the firewall devices which control the networking communication. And based on the analysis of IPSec protocol architecture, that the limitation of network compatibility of IPSec is got. So the new protocol of IPSec over Http based on IPSec tunnel and Http tunnel is exposed with its structure and procedure. The structure of FreeSWAN is improved and the performance test data are presented in order to validate this new protocol. Finally, the performance of the new system is analysed detailedly.