Firewall, as a kind of network security tools, has been widely used.And the log of firewall is the gist for administrator of networks to exam firewall and status of networks running.

• 摘要防火墙作为一种网络安全工具已得到广泛的应用，其日志是网络管理员查看防火墙及网络运行状况的重要依据。