Support for PPP communications initiated on the local host and
PPP communications initiated from a remote host.
Use of serial lines dedicated to a single PPP link or use of
serial lines on an as-needed basis (dynamic acquisition)
allowing for the sharing of serial lines with cu and UUCP
facilities.
Dynamic IP addressing.
SCO PPP can be configured for the dynamic allocation
of IP addresses during PPP negotiation.
Either the local host or the remote host can allocate IP addresses.
IP address pooling. A remote access endpoint can assign
IP addresses from a predefined pool of IP address pairs.
Dynamic PPP link configuration, which negates the need to
relink the kernel or stop/restart TCP/IP to make changes to PPP link
endpoints. Further information is contained in
``Signaling the PPP daemon''.
Two-level priority packet handling.
The PPP driver implements a two-level priority scheme in the
handling of packets.
Given highest priority over other packets, but equal priority
among themselves, are rlogin, telnet,
and ftp packets.
All other packets are handled as a lower priority.
Packet filtering.
SCO PPP provides a mechanism for specifying what types
of IP packets (for example, those carrying FTP data versus
those carrying RIP data) will pass through a PPP network
interface, bring up a PPP network
interface, or reset the idle timer of a PPP network interface.
For more information, see
``PPP packet filtering''.
Negotiation of link and IP parameters.
For more information on negotiation, see
``PPP negotiation''.
Authentication of the local host by the remote and of the remote
host by the local.
SCO PPP supports 2 types of authentication: PAP
and CHAP.
For more information on authentication, see
``PPP authentication methods''.
Access to SCO PPP debugging information.
SCO PPP logs debugging information about its own
activity through
syslog(SLIB).
The amount of information logged is configurable.
Information regarding PPP's use of UUCP services is
also available by activating the logging of this information
to the console.
For details on debugging information, see
``Logging PPP information''.
PPP MIB support.
SCO PPP responds to ioctl queries from
the SNMP daemon
for information regarding the objects in 2 PPP MIBs.
For more information, see
``PPP MIB support''.
PPP now supports the use of drivers
for smart third-party serial port devices
that can perform the packetization and
framing of data required by PPP.
For details, see
``PPP support for smart serial port devices''.