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protocols (4)
  • >> protocols (4) ( Solaris man: Специальные файлы /dev/* )
  • protocols (4) ( Русские man: Специальные файлы /dev/* )
  • protocols (5) ( FreeBSD man: Форматы файлов )
  • protocols (5) ( Русские man: Форматы файлов )
  • protocols (5) ( Linux man: Форматы файлов )
  •  

    NAME

    protocols - protocol name database
     
    

    SYNOPSIS

    /etc/inet/protocols
    

    /etc/protocols
    

     

    DESCRIPTION

    The protocols file is a local source of information regarding the known protocols used in the DARPA Internet. The protocols file can be used in conjunction with or instead of other protocols sources, including the NIS maps ``protcols.byname'' and "protocols.bynumber" and the NIS+ table ``protocols''. Programs use the getprotobyname(3SOCKET) routine to access this information.

    The protocols file has one line for each protocol. The line has the following format:

    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.  

    EXAMPLES

    Example 1 A Sample Database

    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
    egp         8   EGP         # exterior gateway protocol
    pup         12  PUP         # PARC universal packet protocol
    udp         17  UDP         # user datagram protocol
    
    #
    # Internet (IPv6) extension headers
    #
    hopopt      0   HOPOPT      # Hop-by-hop options for IPv6
    ipv6        41  IPv6        # IPv6 in IP encapsulation
    ipv6-route  43  IPv6-Route  # Routing header for IPv6
    ipv6-frag   44  IPv6-Frag   # Fragment header for IPv6
    esp         50  ESP         # Encap Security Payload for IPv6
    ah          51  AH          # Authentication Header for IPv6
    ipv6-icmp   58  IPv6-ICMP   # IPv6 internet control message protocol
    ipv6-nonxt  59  IPv6-NoNxt  # No next header extension header for IPv6
    ipv6-opts   60  IPv6-Opts   # Destination Options for IPv6
    

     

    FILES

    /etc/nsswitch.conf

    configuration file for name-service switch

     

    SEE ALSO

    getprotobyname(3SOCKET), nsswitch.conf(4)  

    NOTES

    /etc/inet/protocols is the official SVR4 name of the protocols file. The symbolic link /etc/protocols exists for BSD compatibility.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    EXAMPLES
    FILES
    SEE ALSO
    NOTES


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