An industry standard protocol developed in 1984 for UNIX environments that supports TCP/IP networking over serial transmission lines. These serial lines are typically dial-up connections using a modem. Serial Line Internet Protocol (SLIP) can provide TCP/IP hosts with dial-up access to the Internet by using SLIP servers located at Internet service providers (ISPs).
SLIP is an older serial line protocol that doesn’t support automatic negotiation of network configurations. It has been largely replaced by the Point-to-Point Protocol (PPP) for the following reasons:
Microsoft Windows NT and Windows 2000 can function as SLIP clients but not as SLIP servers. Windows NT Remote Access Service (RAS) and Windows 2000 Routing and Remote Access servers cannot accept connections from SLIP clients.