一、ISP网络的概念ISP即因特网络用户接入和信息服务的提供者，简称国特网服务提供者。依据ISP的大小及其网络的基础设施，不同的ISP提供不同的服务。比如仅向用户提供拨号人网业务的小型ISP，实际就是因特网联网提供者，它规模小、局域性强，因而服务能力有限。这主要是因为它 First, the concept of ISP network ISP Internet user access and information services provider, referred to as Internet service providers. Depending on the size of the ISP and its network infrastructure, different ISPs provide different services. For example, a small ISP that provides dialer network services only to users is actually an Internet network provider. Due to its small size and strong local area, its service capability is limited. This is mainly because of it