防火墙是目前网络安全的一个最常用的防护措施,广泛用于对校园网络和系统的保护。根据校园网络管理员的要求,监控通过防火墙的数据,允许和禁止特定数据包的通过,并对所有事件进行监控和记录,使内部网络既能对外正常提供Web访问,FTP下载等服务,又能保护内部网络不被恶意者攻击。 Firewalls are one of the most commonly used protection measures for network security and are widely used to protect campus networks and systems. According to the requirements of campus network administrators, monitoring data through the firewall to allow and prohibit the passage of specific data packets, and all the events were monitored and recorded so that the internal network can provide both normal external Web access, FTP download and other services, but also Protect the internal network from being attacked by malicious people.