局域网监听的原理

随着计算机技术的发展，网络已日益成为生活中不可或缺的工具，但伴之而来的非法入Q也一直威胁着计算机网络系统的安全。由于局域网中采用广播方式，因此，在某个广播域中可以监听到所有的信息包。而黑k通过对信息包进行分析，就能获取局域网上传输的一些重要信息。事实上，很多黑k入Q时都把局域网扫描和侦听作为其最基本的步骤和手段，原因是想用这种方法获取其想要的密码等信息。但另一方面，我们对黑k入Q活动和其它网络F罪进行侦查、取证时，也可以使用网络监听技术来获取必要的信息。因此，了解以太网监听技术的原理、实现方法和防范措施就显得尤为重要。

(With the development of computer technology, network has increasingly become an indispensable tool in life, but the accompanying illegal intrusion has always threatened the security of computer network system. Because the LAN adopts broadcast mode, all packets can be monitored in a broadcast domain. By analyzing the packets, hackers can obtain some important information transmitted on the LAN. In fact, many hackers take LAN scanning and listening as their most basic steps and means when they invade, because they want to use this method to obtain the password and other information they want. On the other hand, we can also use network monitoring technology to obtain necessary information when investigating and obtaining evidence for hacker intrusion and other network crimes. Therefore, it is particularly important to understand the principle, implementation methods and preventive measures of Ethernet monitoring technology.)

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