This option specifies an command for pppd to execute (by passing it to a shell) beforeĪttempting to start PPP negotiation. Need to be sent to the modem to dial the appropriate phone number. The format of the options file is described below.Ĭonnect script Usually there is something which needs to be done to prepare the link before the PPP protocol can be started for instance, with a dial-up modem, commands The name string may not begin with / or include. This file may contain privileged options, such as noauth, even if pppd is notīeing run by root.
If neither this option nor the noauth option is specified, pppd will only allow the peer to use IP addresses to which the system does not alreadyĬall name Read additional options from the file /etc/ppp/peers/ name. This option is the default if the system has a default To escape transmitted characters, use the escape option.Īuth Require the peer to authenticate itself before allowing network packets to be sent or received. If no asyncmap option is given, the default is zero, so pppd will ask the peer not to escape any controlĬharacters. Pppd will ask the peer to send these characters as a 2-byte escape sequence. The map is encoded as a hexadecimal number (without a leading 0x) where the least significant bit (00000001) represents character 0 and the most significantīit (80000000) represents character 31. The ACCM is a set of 32 bits, one for each of the ASCII controlĬharacters with values from 0 to 31, where a 1 bit indicates that the corresponding control character should not be used in PPP packets sent to this system. Linux, SunOS) only support the commonly-used baud rates.Īsyncmap map This option sets the Async-Control-Character-Map (ACCM) for this end of the link. On systems such as 4.4BSD and NetBSD, any speed can be Speed An option that is a decimal number is taken as the desired baud rate for the serial device. A value for this option from a privileged source cannot be overridden by a Pppd will use that terminal, and will not fork to put itself in the background. If no device name is given, or if the name of the terminal connected to the standard input is given,
To ttyname to form the name of the device to open. If ttyname does not begin with a slash (/), the string "/dev/" is prepended With other network protocols besides IP, but such use is becoming increasingly rare.įrequently Used Options ttyname Use the serial port called ttyname to communicate with the peer. Pppd can also authenticate the peer and/or supply authentication information to the peer. Protocol (IP) addresses for each end of the link.
TCP IP OVER SERIAL PPP DRIVER
The pppdĭaemon works together with the kernel PPP driver to establish and maintain a PPP link with another system (called the peer) and to negotiate Internet PPP is the protocol used for establishing internet links over dial-up modems, DSL connections, and many other types of point-to-point links.
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