Exemple de long deck : The Point-to-Point Protocol (PPP) provides a method for transmitting datagrams over serial point-to-point links. PPP is composed of three parts: a method for encapsulating datagrams over serial links, an extensible Link Control Protocol (LCP), and a family of Network Control Protocols (NCP) for establishing and configuring different network- layer protocols. The encapsulation scheme is provided by driver code in the kernel. Pppd provides the basic LCP, authentication sup- port, and an NCP for establishing and configuring the Internet Protocol (IP) (called the IP Control Protocol, IPCP). FREQUENTLY USED OPTIONS <tty_name> Communicate over the named device. The string "/dev/" is prepended if necessary. If no device name is given, or if the name of the terminal con- nected to the standard input is given, pppd will use that terminal, and will not fork to put itself in the background. This option is privileged if the noauth option is used. <speed> Set the baud rate to <speed> (a decimal number). On systems such as 4.4BSD and NetBSD, any speed can be specified. Other systems (e.g. SunOS) allow only a limited set of speeds.