摘要
传统的网络隔离方案采用的是逻辑隔离。为了达到从物理上隔离的目的,以保证更可靠的网络安全,同时保证快速的网络传输,文中提出了物理隔离器的设计方案。双Linux系统通过双端口RAM交互网络数据,并采用CPLD逻辑控制器同步双端系统,实现物理隔离和数据传输,同时在Linux内核中加入防火墙过滤,增强安全性。作为一个典型的嵌入式Linux在设备中的应用,文中阐述了开发环境建立、调试环境建立、网卡驱动实现等方面,有助于了解嵌入式Linux的开发过程和原理。
Traditional network isolate resolution adopts logical isolating mode in order to isolate on physical layer, make the network more secure and faster networking transport. This article provides the physical isolator＇ s design resolution. Bi -system communicates by the DPRAM,adopting one CPLD to synchronize the two systems to implement the physical isolating and data communication. In addition, adds the firewall filter in the Linux kernel to improve the security. As the typical application of embedded Linux on device, expound the development environment building, debug environment building and network card driver implementation etc. Help to understand.the development steps and theory of embedded Linux.
出处
《计算机技术与发展》
2006年第7期183-185,共3页
Computer Technology and Development
