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1 perry 1 PROTOCOLS
2 !!!PROTOCOLS
3 NAME
4 DESCRIPTION
5 FILES
6 SEE ALSO
7 ----
8 !!NAME
9
10
11 protocols - the protocols definition file
12 !!DESCRIPTION
13
14
15 This file is a plain ASCII file, describing the various
16 DARPA internet protocols that are available from the TCP/IP
17 subsystem. It should be consulted instead of using the
18 numbers in the ARPA include files, or, even worse, just
19 guessing them. These numbers will occur in the protocol
20 field of any ip header.
21
22
23 Keep this file untouched since changes would result in
24 incorrect ip packages. Protocol numbers and names are
25 specified by the DDN Network Information
26 Center.
27
28
29 Each line is of the following format:
30
31
32 ''protocol number aliases ...''
33
34
35 where the fields are delimited by spaces or tabs. Empty
36 lines and lines starting with a hash mark (#) are ignored.
37 Remainder of lines are also ignored from the occurrence of a
38 hash mark.
39
40
41 The field descriptions are:
42
43
44 ''protocol''
45
46
47 the native name for the protocol. For example ip, tcp or
48 udp.
49
50
51 ''number''
52
53
54 the official number for this protocol as it will appear
55 within the ip header.
56
57
58 ''aliases''
59
60
61 optional aliases for the protocol.
62
63
64 This file might be distributed over a network using a
65 networkwide naming service like Yellow Pages/NIS or
66 BIND/Hesiod.
67 !!FILES
68
69
70 ''/etc/protocols''
71
72
73 The protocols definition file.
74 !!SEE ALSO
75
76
77 getprotoent(3)
78
79
80 Guide to Yellow Pages Service
81
82
83 Guide to BIND/Hesiod Service
84 ----
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