某钢铁公司虽然在5年前就上马了OA、ERP等系统,但是钢铁公司内部各部门都是各自为政,并没有形成完整的网络体系,各单位之间的许多信息要从局域网经过Internet传输,然后再回到局域网的方式交流,不仅速度慢,而且安全性也难以得到保证,并且以前发生过辞职员工在离开公司一段时间后,凭借以前的老口令从 Internet 外网进入到内网资窃技术资料,随着钢铁公 Although a certain steel company launched the OA, ERP and other systems five years ago, the internal departments of the steel company did not want to establish a complete network system. Many of the information between the units was transmitted from the LAN through the Internet and then And then back to the local area network communication, not only slow, but also hard to be guaranteed security, and the resignation of employees before leaving the company for some time, with the old password from the Internet into the Internet outside the network technology information With the steel company