防火墙作为主要的信息安全产品,通过控制和监测网络之间的信息交换和访问行为,可以在很大程度上解决黑客非法入侵、内部服务器惨遭破坏等问题。但是,防火墙的配置较为复杂,加之不菲的价格,往往让资金短缺的中小企业望而却步。 Firewalls, as the main information security products, can largely solve the problems of illegal hacking and internal server destruction by controlling and monitoring the information exchange and access behavior between networks. However, the configuration of the firewall is more complex, combined with the price of money, often let the shortage of funds for SMEs discouraged.