Using Windows Firewall can: 1. Improve the security of an internal network and reduce risks by filtering unsafe services; 2. Strengthen network security policies; 3. Monitor network access and access Audit; 4. By dividing the internal network through the firewall, the isolation of key network segments of the internal network can be achieved and the leakage of internal information can be prevented.
#The operating environment of this article: windows10 system, thinkpad t480 computer.
Firewall technology helps computer networks build a relatively isolated protective barrier between the internal and external networks by organically combining various software and hardware devices for security management and screening to protect user data and A technology for information security.
What can you do with Windows Firewall?
1. Firewall is a barrier to network security
A firewall can greatly improve the security of an internal network and reduce risks by filtering unsafe services. Because only carefully selected application protocols can pass through the firewall, the network environment becomes more secure. For example, the firewall can prohibit the familiar insecure NFS protocol from entering and exiting the protected network, so that external attackers cannot exploit these vulnerabilities. protocols to attack the internal network, and the firewall can also protect the network from route-based attacks. For example, source routing attacks and ICMP redirect paths in IP options.
2. Network security policies can be strengthened
Through the firewall-centered security solution configuration, all security software can be configured on the firewall, which is equivalent to distributing network security issues to various hosts. It is more economical than centralized security management of firewalls.
3. Monitor and audit network access and access
If all access passes through the firewall, the firewall can record these accesses and make log records, and it can also provide network access Statistics of situations, if suspicious actions occur, it is also very important to collect the usage and misuse of a network, and network usage statistics are also very important for network demand analysis and threat analysis.
4. Prevent the leakage of internal information
By dividing the internal network through the firewall, the isolation of key network segments of the internal network can be achieved, thereby limiting the impact of local key or sensitive network security issues on the overall situation. The impact caused by the network. Secondly, privacy is a very concerned issue in internal networks. Details in an internal network that do not attract attention may contain clues about security and arouse the interest of external attackers, and even expose some aspects of the internal network. Security vulnerabilities, using firewalls can hide services that reveal internal details.
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