基于Linux的自动网关的设计与实现

通过对ARP协议的分析,及Linux操作系统中的iptables防火墙策略的深入研究,探讨了利用iptables的NAT规则解决模拟网关的问题,实现了局域网环境下即插即用的自动网关。

Improved approach to enhanced Internet connectivity for mobile ad hoc networks

An improved internetworking approach is proposed to enhance the Internet connectivity which is deteriorated due to unidirectional links and blind rebroadcasting of gateway discovery packets for mobile ad hoc networks. The hybrid gateway discovery scheme that combined the advantages of a proactive and reactive gateway discovery approach is used to achieve high connectivity while keeping overhead costs low. By exchanging ad hoc on-demand distance vector （AODV） hello packet which includes additional fields named symmetric neighbor list and asymmetric neighbor list, unidirectional links are removed from route computation and broadcast storm can also be relieved simultaneously. Performance results using ns-2 simulations, under varying numbers of unidirectional links and node speeds, show that this improved Internet connectivity approach can provide better performance than others.

探讨智能仪器仪表的数据采集设备智慧运维技术

通过智能仪器仪表现场数据采集,无线发射并接收数据,经过自动化系统网关转换,最终通过iPHM监测系统分析,使关键设备状态实时受控,达到智慧运维,提高设备的利用率和生产的稳定性。因此,文章的关键点是探索智能仪器仪表数采系统的特点以及其在设备智慧运维自动化系统应用中的问题,找到相关的解决方法和技术应用并推广。