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网络的一个特点就是数据总在流动中,从一处到另外一处,而互联网由错综复杂的各种网络交汇而成的,也就是说,当你的数据从网络的一台电脑到另一台电脑的时候,通常会经过大量不同的网络设备,我们用tracert命令就可以看到这种路径是如何进行的。如果传输过程中,有人看到了传输中的数据,那么问题就出现了,这就好比你给人发了一封邮件,在半路上被人拆开偷看一样。这里面需要解释的一点是,网络传输分为明文传输和密文传输,如果采用密文传输,当中途数据被截取时,偷窥者所看到的是乱成一团的字符,他们需要相当费力的去解码,这就好比二战时候的间谍战,电报发送的东西敌军虽然可以收到,但是需要解码才能阅读。不过更可怕的是,大部分网络数据传输都是明文的,也就是一旦被人截获,所有的秘密将被一览无余,也许是你的商业机密,也许是你的存款信息,甚至是你邮箱的帐号密码等等。
One of the characteristics of the network is that the data is always flowing from place to place, and the Internet is made up of intricate networks, that is, when your data is transferred from one computer on the network to another The computer usually passes through a large number of different network devices, and we can see how this path is done using the tracert command. If the transmission process, someone saw the transmission of data, then the problem arises, this is like giving you an email, halfway to be peeved. What needs to be explained here is that the network transmission is divided into plaintext transmission and ciphertext transmission. If ciphertext transmission is used, when the intercepting data is intercepted, the peephole can see chaotic characters and they need a lot of effort Decoding, which is like the spy war in World War II, telegrams sent by the enemy although they can receive, but need to decode to read. Even more frightening is that most of the network data transmission is clear, that is, once intercepted, all the secrets will be glanced, perhaps your trade secrets, perhaps your deposit information, and even your email Account password and so on.