防火墙与网络安全
如今的网络安全(防火墙)现已不仅仅局限于对外的避免黑k攻击上，更多的企业内部网络常常存在诸如上网速度慢、时断时序、邮件收发不正常等问题。这样都会导致内网的很多问题，比方病毒，很多病毒传达都是使用者不良行为而形成的。所以说内网用户的控制和管理是十分必要的。(Today's network security (firewall) is not only limited to avoid external hacker attacks, but more internal networks of enterprises often have problems such as slow Internet access, intermittent timing, and abnormal email sending and receiving. This will lead to many problems in the intranet, such as viruses, and many virus transmissions are caused by bad behavior of users. Therefore, the control and management of intranet users is very necessary.)
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