Different ISPs offer different services, depending on how big they are and the infrastructure of their networks. Mainly, providers can be categorized by their method of physical Internet access, the applications they provide to customers, and the security services they provide.
The following sections cover the service models that are most common throughout the Internet service provider market today. As you'll see, these services range from providing dial-up access via a telephone line in your home to data center hosting facilities where you collocate your equipment and obtain connectivity locally.
Dedicated Internet Access
Dedicated Internet access is commonly provided at speeds of 56 kbps or 64 kbps up to T1/E1 lines (1.5 and ...