A novel framework for remote service discovery and access of IP cameras with Network address Translation (NAT) traversal is presented in this paper. The proposed protocol, termed STDP (Service Trader Discovery Protoco...A novel framework for remote service discovery and access of IP cameras with Network address Translation (NAT) traversal is presented in this paper. The proposed protocol, termed STDP (Service Trader Discovery Protocol), is a hybrid combination of Zeroconf and SIP (Session Initial Protocol). The Zeroconf is adopted for the discovery and/or publication of local services;whereas, the SIP is used for the delivery of local services to the remote nodes. In addition, both the SIP-ALG (Application Layer Gateway) and UPnP (Universal Plug and Play)-IGD (Internet Gateway Device) protocols are used for NAT traversal. The proposed framework is well-suited for high mobility applications where the fast deployment and low administration efforts of IP cameras are desired.展开更多
虚拟专用网(Virtual Private Network,VPN)技术提供了一种通过公用网络安全地对企业内部专用网络进行远程访问的连接方式.本文采用GNS3虚拟仿真软件,设计了适用于LAN-to-LAN的VPN实验案例.分析了GRE over IPSec和NAT技术,利用Wireshark...虚拟专用网(Virtual Private Network,VPN)技术提供了一种通过公用网络安全地对企业内部专用网络进行远程访问的连接方式.本文采用GNS3虚拟仿真软件,设计了适用于LAN-to-LAN的VPN实验案例.分析了GRE over IPSec和NAT技术,利用Wireshark工具进行了协议分析,并给出了实验结果.经过实践表明,利用GNS3虚拟实验平台进行实验教学,提高了实验教学效果,该实验增强了学生对GRE over IPSec VPN的理解能力和实践能力.展开更多
文摘A novel framework for remote service discovery and access of IP cameras with Network address Translation (NAT) traversal is presented in this paper. The proposed protocol, termed STDP (Service Trader Discovery Protocol), is a hybrid combination of Zeroconf and SIP (Session Initial Protocol). The Zeroconf is adopted for the discovery and/or publication of local services;whereas, the SIP is used for the delivery of local services to the remote nodes. In addition, both the SIP-ALG (Application Layer Gateway) and UPnP (Universal Plug and Play)-IGD (Internet Gateway Device) protocols are used for NAT traversal. The proposed framework is well-suited for high mobility applications where the fast deployment and low administration efforts of IP cameras are desired.
文摘虚拟专用网(Virtual Private Network,VPN)技术提供了一种通过公用网络安全地对企业内部专用网络进行远程访问的连接方式.本文采用GNS3虚拟仿真软件,设计了适用于LAN-to-LAN的VPN实验案例.分析了GRE over IPSec和NAT技术,利用Wireshark工具进行了协议分析,并给出了实验结果.经过实践表明,利用GNS3虚拟实验平台进行实验教学,提高了实验教学效果,该实验增强了学生对GRE over IPSec VPN的理解能力和实践能力.
