security kernel
4.Multi-security policies(BLP,CW,ACL) are implemented in the kernel. It can protect the confidentiality and integrality of the information.
5.This paper introduced the embedded network application processor MPC8245, explored the development of embedded Linux VPN security gateway based on HHPPC8245-4ETH-R1 platform, and discussed the porting of Linux kernel 2.6 to an embedded system based on MPC8245 and the design of the embedded Linux IPsec VPN security gateway in depth.
6.Linux operating system has become well platform of implementing our own independent secure operating system because of its performance and open source. This paper explores security mechanism of Linux operating system and its limitation, and describes a lightweiht, general purpose, access control framework for Linux kernel——LSM(Linux Security Module).

