The Internet protocol suite, commonly known as TCP/IP, consists of user level protocols TCP and UDP which use IP as the network level protocol. There is a wide variety of different network applications and services using TCP/IP protocols. The BSD compatible socket interface to Internet protocols makes it possible to port existing applications with minor modifications.
AmiTCP/IP connects to the network via SANA-II compatible device drivers. SANA-II is a hardware and protocol independent network adapter interface specification published by Commodore. Several network adapter manufactures have made available SANA-II device drivers for their hardware. Currently there are SANA-II drivers available at least for Ethernet, Arcnet and serial line interfaces. So you can connect to Internet with Ethernet LAN, or via modem line with Serial line IP (SLIP) optionally with compressed headers (CSLIP).
A typical application is to use (C)SLIP to connect to the Internet and have multiple connections simultaneously. You can read your e-mail and news, transfer files and have multiple terminal sessions at the same time over one modem line.
Here are the AmiTCP files you'll need (use binary transfer or load-to-disk!)
We hope to, someday, have a program for unix systems which will act as the WWW front-end for Amiga Mosaic, and then transfer the data to the Amiga using a standard protocol such as zmodem. This will eliminate the requirement for a TCP/IP connection entirely. However, this is still just an idea, and may not be implemented for a while yet.
If you do not have any kind of internet connection, you can still run Amiga Mosaic locally, viewing HTML files on your own hard disk. Although Amiga Mosaic's main purpose for existing is to browse the world wide web, it still makes a nice local file browser, similar to AmigaGuide.