protocols(4)                                                   protocols(4)

NAME
     protocols - protocol name data base

SYNOPSIS
     /etc/protocols

DESCRIPTION
     The protocols file contains information regarding the known protocols
     used in the DARPA Internet. For each protocol a single line should be
     present with the following information:

          official-protocol-name  protocol-number  aliases

     Items are separated by any number of blanks and/or TAB characters. A #
     indicates the beginning of a comment; characters up to the end of the
     line are not interpreted by routines which search the file.

     Protocol names may contain any printable character other than a field
     delimiter, NEWLINE, or comment character.

EXAMPLE
     The following is a sample database:

     #
     # Internet (IP) protocols
     #
     ip    0    IP     # internet protocol, pseudo protocol number
     icmp  1    ICMP   # internet control message protocol
     ggp   3    GGP    # gateway-gateway protocol
     tcp   6    TCP    # transmission control protocol
     pup   12   PUP    # PARC universal packet protocol
     udp   17   UDP    # user datagram protocol

FILES
     /etc/protocols

SEE ALSO
     getprotoent(3N).

















Page 1                       Reliant UNIX 5.44                Printed 11/98