GRE-over-IPsec VPN Design and Implementation:Hefei Baida Group Network Based VPN Application
Zhang You-gu · Computer Knowledge and Technology · 2013
The human society has entered the 21st century, and the computer information network has penetrated every corner of the world, regional, state, government, businesses and even families. The rapid development of computer networks has brought much convenience to people, and then the potential security threat network information filled in the various fields. VPN technology is built on top of GRE over IPSec technology, and through Hefei Baida Group to design their network topology and simulation. GRE over IPSec VPN technology is through the combination of GRE and IPSec, and the formation of a better VPN security technology, its main borrowing GRE IPSec encryption and security advantages of multicast support, which makes the network more secure VPN. The main working principle of the technology: a complete multicast, broadcast packets or IP packets are encapsulated in a unicast packet(IPSEC) in order to deal with, such as OSPF or RIP broadcast multicast data streams to complete the communication entities in the IPSec tunnel between the dynamic routing study.