2 .\" Copyright (c) 2004-2005
4 .\" All rights reserved.
5 .\" Copyright (c) 2001-2003
6 .\" Fraunhofer Institute for Open Communication Systems (FhG Fokus).
7 .\" All rights reserved.
9 .\" Author: Harti Brandt <harti@FreeBSD.org>
11 .\" Redistribution and use in source and binary forms, with or without
12 .\" modification, are permitted provided that the following conditions
14 .\" 1. Redistributions of source code must retain the above copyright
15 .\" notice, this list of conditions and the following disclaimer.
16 .\" 2. Redistributions in binary form must reproduce the above copyright
17 .\" notice, this list of conditions and the following disclaimer in the
18 .\" documentation and/or other materials provided with the distribution.
20 .\" THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 .\" ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
24 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 .\" $Begemot: bsnmp/snmpd/bsnmpd.1,v 1.12 2006/02/27 09:50:03 brandt_h Exp $
39 .Nd "simple and extensible SNMP daemon"
47 .Op Fl m Ar variable Ns Op = Ns Ar value
52 daemon serves the internet SNMP (Simple Network Management Protocol).
53 It is intended to serve only the absolute basic MIBs and implement all other
54 MIBs through loadable modules.
57 can be used in unexpected ways.
59 The options are as follows:
60 .Bl -tag -width ".It Fl D Ar options"
65 Print a short usage message.
69 as configuration file instead of the standard one.
71 Debugging options are specified as a comma separated string.
72 The following options are available.
73 .Bl -tag -width "trace=level"
75 Dump all sent and received PDUs to the terminal.
77 Set the debugging level of the event library (see
80 .It Cm trace Ns Cm = Ns Cm level
81 Set the snmp library trace flag to the specified
83 The value can be specified in the usual C-syntax for numbers.
86 Specify a colon separated list of directories to search for configuration
89 .Pa /etc:/usr/etc/:/usr/local/etc .
90 These paths are only searched for include specified within <> parentheses.
94 as the default basename for the pid and the configuration files.
95 .It Fl m Ar variable Ns Op = Ns Ar value
96 Define a configuration variable.
98 Specify an alternate pid file instead of the default one.
102 reads its configuration from either the default or the user specified
104 The configuration file consists of the following types of lines:
105 .Bl -bullet -offset indent
113 MIB variable assignments
116 If a line is too long it can be continued on the next line by ending it with
118 Empty lines and lines in which the first non-blank character is a
122 All MIB variable assignments of the entire configuration (including nested
123 configuration files) are handled as one transaction, i.e., as if they arrived
125 Any failure during the initial configuration read causes
128 A failure during the configuration read caused by a module load
129 causes the loading of the module to fail.
131 The configuration is read during initialization of
133 when a module is loaded and when
136 .Ss VARIABLE ASSIGNMENTS
137 Variable assignments can take one of two forms:
138 .Bd -unfilled -offset indent
143 The string reaches from the first non-blank character after the
144 equal sign until the first new line or
148 the string is assigned to the variable unconditionally, in the second case the
149 variable is only assigned if it does not exist yet.
151 Variable names must begin with a letter or underscore and contain only letters,
152 digits or underscores.
153 .Ss SECTION SEPARATORS
154 The configuration consists of named sections.
155 The MIB variable assignments in the section named
157 are executed only during initial setup or when
160 All other sections are executed when either a module
161 with the same name as the section is loaded or
163 receives a SIGHUP and that module is already loaded.
164 The default section at the start of the configuration is
166 One can switch to another section with the syntax
167 .Bd -unfilled -offset indent
173 is the name of the section.
176 can be used in more than one place in the configuration.
177 All of these parts are collected into one section.
178 .Ss INCLUDE DIRECTIVES
179 Another configuration file can be included into the current one with the
180 include directive that takes one of two forms:
181 .Bd -unfilled -offset indent
186 The first form causes the file to be searched in the current directory, the
187 second form causes the file to be searched in the directories specified in
188 the system include path.
189 Nesting depth is only restricted by available memory.
190 .Ss MIB VARIABLE ASSIGNMENTS
191 A MIB variable is assigned with the syntax
192 .Bd -unfilled -offset indent
193 oid [ suboids ] = value
197 is the name of the variable to be set.
198 Only the last component of the entire name is used here.
199 If the variable is a scalar, the index (.0) is automatically
200 appended and need not to be specified.
201 If the variable is a table column, the index
204 The index consist of elements each separated from the
205 previous one by a dot.
206 Elements may be either numbers, strings or hostnames
207 enclosed in [] brackets.
208 If the element is a number it is appended
210 If the element is a string, its length and the
212 code of each of its characters are appended to the current oid.
214 element is a hostname, the IP address of the host is looked up and the four
215 elements of the IP address are appended to the oid.
217 For example, an oid of
218 .Bd -unfilled -offset indent
219 myvariable.27.foooll.[localhost]."&^!"
223 .Bd -unfilled -offset indent
224 myvariable.27.6.102.111.111.111.108.108.127.0.0.1.38.94.33
227 The value of the assignment may be either empty, a string or a number.
228 If a string starts with a letter or an underscore and consists only of
229 letters, digits, underscores and minus signs, it can be written without
231 In all other cases the string must be enclosed in double quotes.
233 A variable substitution is written as
234 .Bd -unfilled -offset indent
240 is the name of the variable to substitute.
241 Using an undefined variable is considered an error.
243 .Bl -tag -width ".It Pa /var/run/ Ns Ao Ar prefix Ac Ns \&.pid" -compact
244 .It Pa /etc/ Ns Ao Ar prefix Ac Ns \&.config
245 Default configuration file, where the default
249 .It Pa /var/run/ Ns Ao Ar prefix Ac Ns \&.pid
251 .It Pa /etc:/usr/etc/:/usr/local/etc
252 Default search path for system include files.
253 .It Pa @MIBSPATH@FOKUS-MIB.txt
254 .It Pa @MIBSPATH@BEGEMOT-MIB.txt
255 .It Pa @MIBSPATH@BEGEMOT-SNMPD.txt
256 Definitions for the MIBs implemented in the daemon.
257 .It Pa /etc/hosts.allow, /etc/hosts.deny
258 Access controls that should be enforced by TCP wrappers are defined here.
259 Further details are described in
268 conforms to the applicable IETF RFCs.
270 .An Hartmut Brandt Aq harti@FreeBSD.org