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This article mainly introduces what is the most commonly used method of defense network monitoring, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let's take a look at it.

In order to prevent network surveillance, the most commonly used method is "information encryption". Data information encryption is considered to be the most reliable form of security, which can fundamentally meet the requirements of information integrity and is an active security strategy.

In order to prevent network surveillance, the most commonly used method is "information encryption".

The method of defending against Network snooping

1. Use network tools to defend

With the development of science and technology, there are many tools for us to find vulnerabilities in the system, such as SATAN and so on. SATAN can analyze the management of the network, test and report a lot of information, and identify some network-related security issues. SATAN provides an explanation of the problems found and the extent to which they may affect system and network security, and explains how to deal with them through the information attached to the tool.

Of course, there are a lot of security tools like this. It includes scanning TCP ports or monitoring all TCP ports of multiple hosts, analyzing network protocols, monitoring and controlling multiple network segments, using these security tools correctly and finding system vulnerabilities in time.

For the WindowsNT system platform, you can regularly check the SECLog records in the EventLog to see if there is anything suspicious to prevent network snooping and port scanning.

2. Install the firewall

The fire wall security technology is based on the fact that the protected network has clearly defined boundaries and services, and the threat to network security only comes from the external network. By monitoring, restricting and changing the data flow across the "firewall", we can shield the information and structure of the protected network from the external network as much as possible, so as to realize the security protection of the network, so it is more suitable for network systems that are relatively independent, have limited ways to connect with the external network, and have relatively single and centralized network services, such as Internet. " In technical principle, the "firewall" system does not play a role in preventing the security threats from the internal network system, and the enhancement of the network security function is often at the expense of the flexibility, diversity and openness of the network service. and it requires a lot of network management overhead.

The implementation of the fire wall network security system is quite simple, and it is a widely used network security technology at present, but its basic characteristics and operation cost limit its potential application in the open large-scale network system. Because the fire wall type network security system only has the security function on the network boundary, the actual effectiveness scope is quite limited, so the "firewall" type security technology is often specially designed and implemented according to the specific needs.

For individual users, installing a good personal firewall is a very practical and effective method. Now many companies have developed personal firewalls, these firewalls often have an intelligent defense core, attack, and automatic defense to protect the security of the internal network.

3. Encrypting the information transmitted on the network can effectively prevent attacks such as network monitoring.

At present, there are many software packages that can be used to encrypt connections, so that even if the intruder captures the data, it cannot decrypt the data and lose the meaning of eavesdropping.

First of all, you should take precautions from the time you buy a mobile phone. The purchase channel is a very important link. Secondly, do not casually go to the non-designated maintenance point to repair the mobile phone, do not easily lend the mobile phone to others for use, if you have doubts about your mobile phone, you should go to the manufacturer's designated maintenance point for testing as soon as possible. For the large-scale mobile phone monitoring system introduced earlier, because it is already a very "standard" espionage equipment, if this kind of eavesdropping appears around us, because of its high power, the counter-espionage department and the police will detect and find these eavesdroppers, and the punishment for eavesdropping is very severe.

Thank you for reading this article carefully. I hope the article "what is the most commonly used method to defend against network surveillance" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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