1 专线访问 Internet对于公司和大机构而言,最好的 Internet 访问方式就是采用专线访问。即从 ISP 供应商处租用符合速率要求的专用通信线路,选取专门的路由器,该路由器将负责客户间与外界的通信。专线访问提供了一种最灵活的连接方式,每台计算机都是 Internet 的正式成员,可执行各种网络功能。但由于专线访问方式费用很高,因此比较适合于大的团体和 1 green line to access the Internet For companies and large organizations, the best way to access the Internet is to use green access. That is, rent a dedicated communication line that meets the speed requirement from an ISP provider and select a special router that will be responsible for communication between clients and the outside world. Private line access provides one of the most flexible connections, with each computer being an official member of the Internet and capable of performing a variety of network functions. However, due to the high cost of green access, it is more suitable for large groups and