随着网络的发展,基于IP技术的各种视频通讯应用也应运而生(如网络远程视频监控)。其不但具传统模拟视频监控的功能,最重要的是具有网络远程视频监控,传输距离无界限,监控方便;监控画面切换简便快捷;图像影象存取简便容易;安装简易,大大降低了综合成本。
但由于监控中心和监控网络摄像机的通讯,需要监控网络摄像机一端处具有静态公网IP,这样才能让远程监控中心可以通过IP地址直接找到监控网络摄像机。而我国目前的静态IP短缺和价格昂贵,不可能给每个的网络监控端(监控网络摄像机)都配备一个静态IP。最好的解决办法当然是能在廉价的动态IP上解决远程视频监控寻址问题。
动态域名解析解决方案
动态域名解析是指将拥有动态IP的主机通过一个域名和其邦定,远端通过广域网访问该主机时直接通过访问这个域名就可以了,而无须关心动态IP地址的变化。
动态域名解析系统一般由两部分构成。第一部分是服务器端程序,位于服务商的主机上。另一部分是客户端程序,就运行在广大用户的主机上。在每次连接网络的时候,客户端程序就会通过信息传递,把该主机的动态IP地址传送给位于服务商主机上的服务器程序,服务器程序负责提供DNS服务并实现动态域名解析服务,再收到客户端通知后服务器端程序立即更新数据,将新的IP地址和原有的固定域名绑定,这样就完成了动态域名解析的服务。别人也就可以通过域名访问你的服务器了。
动态IP远程视频监控方案描述
给每个监控网络摄像机申请一个域名(如:abc.88ip.cn),由域名解析系统来探查监控网络摄像机当前的IP地址,当IP地址变化后,88ip客户端通知88ip域名解析系统服务器端及时刷新为新的IP地址并通知远程视频监控端。远程视频监控端通过固定不变的域名(如:abc.88ip.cn)来访问每个监控设备,这样再无需关心IP地址的变化于否,动态IP转化为“静态”IP了。
动态IP远程视频监控方案的具体实施方式有以下几种。
a)路由器外挂
具体的说路由器外挂就是采用集成88IP的路由器,通过申请88IP域名和服务,把申请所得用户名密码填入路由器DDNS" title="DDNS" target="_blank">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" 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title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS" title="DDNS">DDNS模块相关项,再由路由器上端口映射指向所需访问的监控设备即可,远程视频监控端通过访问域名即可访问到当前路由器,根据不同的端口来判断并指向所需访问的监控设备。
b) 采用集成88IP的网络摄像机
对于无人值守或不方便外挂路由器的状况下,远程视频监控也可采用集成88Ip的网络摄像机,同样把申请88Ip服务得到的用户名密码填入相关项,通过一条ADSL等宽带线路直接相连。远程视频监控端通过域名直接访问。
c) 运行88IP客户端
在局域网内部的任一PC或服务器上运行88Ip客户端,此时域名解析到的IP地址是局域网网关出口处的公网IP地址,再在网关处作端口映射指向监控设备即可。
动态IP远程视频监控方案特点
应用灵活:可采用88IP,实现多种方式动态IP寻址。
连网费用低:不用花费高额的费用申请带固定IP的DDN专线,廉价的宽带线路即可。
支持多种连网方式:88ip系统可支持ISDN、xDSL、CableModem、小区宽频网络等各种分配公网IP的互联网接入线路。
操作方便、快速:不需每次连网时打电话或使用即时通讯软件向对方询问IP地址,只需在监控软件中输入全球唯一的域名即,使用时感觉不到88Ip的存在。
适用范围广:只要在能上网的地方,全球均可对它进行授权访问。并可很容易的支持不同厂家的各种网络监控设备,包括网络摄像机,网络视频服务器,门禁控制器,可视电话等。