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The similarities and differences between industrial... 1. definition of industrial 4G router and industrial switch   Industrial 4G router:   Industrial 4G router is a network device responsible for path finding. It provides users with communication by finding the least communication from multiple paths in the interconnection network. Industrial 4G router...

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4g router features of E-lins Technology With the development of new communication technologies and the continuous improvement of network efficiency and function of wireless communication, 4G has been widely used. 4G industrial-grade wireless routers are playing an increasingly important role in the applications of various industries, and the price is getting...

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E-Lins Industrial router applications Industrial-grade routers as Internet network layer communication equipment application in all walks of life, brought a lot of convenience for our industry. "E-Lins" introduce the application of industrial router scenario analysis.   1 The self-service terminal network   E-lins industrial router networking...

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Classification of 4G industrial routers There are many types of 4G industrial routers, which can be divided into different categories from different perspectives. Different types of 4G industrial routers can be used in different environments. The following sections classify the 4G industrial routers from different perspectives. According to the performance From...

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Dual SIM Router vs. Dual Radio Router Projects are looking to save their enterprises time and money ask us this very often: “When would I need to use dual SIMs, and in what situations should I consider dual radio dual sim router?” In order to make this clear, let’s take a quick look at the dual SIM and dual SIM dual radio module functionality. Dual...

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工业路由器CHAP协议的认证过程

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  工业路由器的PPP协议支持CHAP和PAP(密码认证协议),CHAP协议由于加密通信,定时验证,所以比PAP更为安全。CHAP俗称挑战握手协议,接收方通过自己的数据库的ID和密码加密计算成一个数值,然后在发送方验证这个数值是否和自己计算出来的数值是否一致进行验证。

  CHAP协议的认证及其特点。配置CHAP认证协议后,发起连接工业路由器1向对端工业路由器2发送建立链路请求,并协商约定使用CHAP认证。认证的过程如下:

  ①工业路由器2发送一条询问消息(内容包括ID、随机数、路由器名字工业路由器2)给工业路由器1;

  ②工业路由器1根据询问消息中的名字工业路由器2,查询自己的数据库,找到与用户工业路由器2的共享密码,然后使用询问消息中的ID、随机数、名字工业路由器2和共享密码生成一个唯一的MD5(摘要5)哈希数;

  ③工业路由器1把询问消息中的ID、随机数、哈希数和名字工业路由器1发送给工业路由器2;

  ④工业路由器2使用它最初发送给工业路由器1的ID、随机数、名字工业路由器2加上共享密码生成自己的哈希数;

  ⑤工业路由器2将自己的哈希数与工业路由器1发送的哈希数进行对比,如果这两个数值相同,则工业路由器2对工业路由器1发送建立链路响应(如果不同,系统会生成一个CHAP失败数据报);

  ⑥链路建立,连接;

  ⑦间隔一段时间,重复步骤①~⑥,如果R2比较发现两个哈希数不同,则终止连接。

  4g路由器                    无线路由器

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