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网关和路由器之间的区别 网关是充当转换代理的计算机系统或设备。网关是两个系统之间的转换器,它们使用不同的通信协议,数据格式或语言,甚至是完全不同的体系结构。与简单传达信息的网桥不同,网关重新打包它们收到的信息以满足预期系统的需要。那么网关和路由器之间的区别是什么? 网关和路由器之间的区别如下: 路由器的作用是连接不同的网络并传输信息。根据用途,可分为:接入,企业级,骨干级,太比特,多WAN和3G无线等。 网关 网关可以是路由器,交换机或PC。对于同一网段内的通信,不必涉及网关。只有当主机和非本地网段设备通信时,才需要将所有数据包发送到网关设备,然后通过网关设备转发或路由它们。 路由器是一个网络层系统。一般来说,市场上的路由器分为两类,一类是单协议路由器,另一类是多协议路由器。路由器可以转换数据格式,成为与协议不同的网络互连的必要设备。 网关与路由的关系可以表示为:网关是网络连接的基础,路由是网络连接的桥梁。 路由器使用静态或动态路由来确定网络之间的最短路径。静态路由需要管理员手动设置,动态路由USES协议以动态发现网络之间的路径并确定最短路径。通常,静态路由用于小型网络,动态路由用于大型复杂网络。 现在,路由器集成了网关功能,因此路由器也具有网关功能。 网关和路由器之间的区别 从网关和路由器的定义来看,如果只连接两个网络,则只需要一个网关。 假设只有两个网络:网络A和网络B. 为了使网络A和网络B能够通信,只使用网关连接两个网络,因为只有两个网络,并且不需要确定网络之间的最短路径。 如果需要连接多个网络,为了确保网络的可靠性,需要将网络结构设计为完整网络或部分网络。通过这种方式,网络之间的通信需要两个设备,网关和路由器。由于当前路由器集成了网关的功能,因此只能使用一个设备路由器。

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The difference between a gateway and a router A gateway is a computer system or device that ACTS as a transformation agent. A gateway is a translator between two systems that use different communication protocols, data formats, or languages, or even completely different architectures. Unlike Bridges that simply convey information, gateways repackage the information...

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工业路由器的VPN VPN通常是指虚拟专用网络,它只是在公共网络上建立的专用网络,用于加密通信。 VPN功能是在加密数据包时实现目标地址转换和远程访问。因此,工业VPN路由器非常适合项目的数据传输安全要求。工业路由器是在普通路由器的基础上增加的工业要求,而工业VPN路由器是在工业路由器的基础上增加的VPN功能。为什么工业路由器会设置VPN功能?那么VPN功能的好处是什么? VPN工业路由器 VPNS允许您在复杂的公共网络中工作而无需担心安全性。当然,这也是工业VPN路由器的基本功能; 2.可以解决多台设备同时组网,随时使用VPN功能的问题。登录后不再需要繁琐的操作,并且需要连接每个设备。只要你切换网络,就可以选择使用或不使用VPN功能来达到开箱即用的效果; 3,一些连接设备联网,一些需要使用本地网络,一些使用VPN网络,这样可以错开使用; 4.工业VPN路由器可以连接多个终端和一个账号,不再担心VPN账号会限制连接终端的数量; 工业路由器 5.市场上大多数工业路由器已经支持VPN中的PPTP连接模式,而万无一失的操作设置不再是专家的专利。 VPN在工业,商业和民用领域非常受欢迎。它们可以使网络传输更安全,更专业,更自由。工业VPN路由器的分类工业VPN路由器的常见分类是PPTP,L2TP,IPSEC。最常见的是PPTP协议。如上所述,市场上的大多数工业路由器都具有PPTP安全协议,即点对点隧道协议。使远程用户能够通过拨入ISP,直接连接到Internet或通过其他网络安全地访问企业网络。...

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Why would industrial routers set up VPN capabilities Industrial router is the industrial version added on the basis of ordinary router, while industrial VPN router is the VPN function added on the basis of industrial router. VPN generally refers to a virtual private network, which is simply a private network established on a public network for encrypted communication. VPN...

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告别SIM卡,eSIM时代到来! SIM卡是(Subscriber Identification Module ),也称为用户身份识别卡、智能卡,GSM数字移动电话机必须装上此卡方能使用。 在电脑芯片上存储了数字移动电话客户的信息,加密的密钥以及用户的电话簿等内容,可供GSM网络客户身份进行鉴别,并对客户通话时的语音信息进行加密。 为解决SIM卡槽占用大量手机空间的难题,SIM的尺寸经历了三种变化: 标准卡:尺寸为...

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IoT Applications

文章目录 : 其他, 技术相关

According to Gartner, Inc. (a technology research and advisory corporation), there will be nearly 20.8 billion devices on the Internet of things by 2020. ABI Research estimates that more than 30 billion devices will be wirelessly connected to the Internet of things by 2020. As per a 2014 survey and study done by Pew Research Internet Project, a large majority of the technology experts and engaged Internet users who responded—83 percent—agreed with the notion that the Internet/Cloud of Things, embedded and wearable computing (and the corresponding dynamic systems) will have widespread and beneficial effects by 2025. As such, it is clear that the IoT will consist of a very large number of devices being connected to the Internet. In an active move to accommodate new and emerging technological innovation, the UK Government, in their 2015 budget, allocated £40,000,000 towards research into the Internet of things. The former British Chancellor of the Exchequer George Osborne, posited that the Internet of things is the next stage of the information revolution and referenced the inter-connectivity of everything from urban transport to medical devices to household appliances.

Integration with the Internet implies that devices will use an IP address as a unique identifier. However, due to thelimited address space of IPv4 (which allows for 4.3 billion unique addresses), objects in the IoT will have to use IPv6to accommodate the extremely large address space required. Objects in the IoT will not only be devices with sensory capabilities, but also provide actuation capabilities (e.g., bulbs or locks controlled over the Internet). To a large extent, the future of the Internet of things will not be possible without the support of IPv6; and consequently the global adoption of IPv6 in the coming years will be critical for the successful development of the IoT in the future.

The ability to network embedded devices with limited CPU, memory and power resources means that IoT finds applications in nearly every field. Such systems could be in charge of collecting information in settings ranging from natural ecosystems to buildings and factories, thereby finding applications in fields of environmental sensing and urban planning.

On the other hand, IoT systems could also be responsible for performing actions, not just sensing things. Intelligent shopping systems, for example, could monitor specific users’ purchasing habits in a store by tracking their specific mobile phones. These users could then be provided with special offers on their favorite products, or even location of items that they need, which their fridge has automatically conveyed to the phone. Additional examples of sensing and actuating are reflected in applications that deal with heat, electricity and energy management, as well as cruise-assisting transportation systems. Other applications that the Internet of things can provide is enabling extended home security features and home automation. The concept of an “Internet of living things” has been proposed to describe networks of biological sensorsthat could use cloud-based analyses to allow users to study DNA or other molecules.

However, the application of the IoT is not only restricted to these areas. Other specialized use cases of the IoT may also exist. An overview of some of the most prominent application areas is provided here. Based on the application domain, IoT products can be classified broadly into five different categories: smart wearable, smart home, smart city, smart environment, and smart enterprise. The IoT products and solutions in each of these markets have different characteristics.

 

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