Network security risks not only pose a threat to personal privacy and corporate interests,but may also have serious impacts on national security and social stability.Therefore,effective measures should be taken to protect network information security and ensure that information is not leaked.Firewall technology is an important and effective preventive measure.This article mainly introduces the working principle and types of firewalls,and analyzes the application of firewall technology in network information security.It explains how to adopt effective and reasonable firewall configuration to provide technical support for ensuring network information security.
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