防火墙是保护内部网络系统免遭外部安全威胁的一种十分有效的方式,防火墙已经成为当今计算机网络的关键组件。双机热备防火墙用于高可靠性的系统中,为了保证系统的实时性,在实验环境中分析了防火墙双机热备对网络性能的影响,研究内容包括影响因素和影响大小,并给出了结论和建议。 Firewalls are a very effective way to protect internal network systems from external security threats. Firewalls have become a key component of today’s computer networks. In order to ensure the real-time performance of the system, the dual-system hot backup firewall is used in the system with high reliability. In the experimental environment, the effect of the dual-system hot backup of the firewall on the network performance is analyzed. The content of the research includes influencing factors and influence sizes, Concluded and suggested.