1snmpd_selinux(8) SELinux Policy snmpd snmpd_selinux(8)
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6 snmpd_selinux - Security Enhanced Linux Policy for the snmpd processes
7
9 Security-Enhanced Linux secures the snmpd processes via flexible manda‐
10 tory access control.
11 The snmpd processes execute with the snmpd_t SELinux type. You can
13 check if you have these processes running by executing the ps command
14 with the -Z qualifier.
15 For example:
17 ps -eZ | grep snmpd_t
19
23 The snmpd_t SELinux type can be entered via the snmpd_exec_t file type.
24 The default entrypoint paths for the snmpd_t domain are the following:
26 /usr/sbin/snmpd, /usr/sbin/snmptrapd
28
30 SELinux defines process types (domains) for each process running on the
31 system
32 You can see the context of a process using the -Z option to ps
34 Policy governs the access confined processes have to files. SELinux
36 snmpd policy is very flexible allowing users to setup their snmpd pro‐
37 cesses in as secure a method as possible.
38 The following process types are defined for snmpd:
40 snmpd_t
42 Note: semanage permissive -a snmpd_t can be used to make the process
44 type snmpd_t permissive. SELinux does not deny access to permissive
45 process types, but the AVC (SELinux denials) messages are still gener‐
46 ated.
47
50 SELinux policy is customizable based on least access required. snmpd
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run snmpd with the tightest access possible.
53 If you want to dontaudit all daemons scheduling requests (setsched,
57 sys_nice), you must turn on the daemons_dontaudit_scheduling boolean.
58 Enabled by default.
59 setsebool -P daemons_dontaudit_scheduling 1
61 If you want to allow all domains to execute in fips_mode, you must turn
65 on the fips_mode boolean. Enabled by default.
66 setsebool -P fips_mode 1
68 If you want to allow system to run with NIS, you must turn on the
72 nis_enabled boolean. Disabled by default.
73 setsebool -P nis_enabled 1
75
79 SELinux defines port types to represent TCP and UDP ports.
80 You can see the types associated with a port by using the following
82 command:
83 semanage port -l
85 Policy governs the access confined processes have to these ports.
88 SELinux snmpd policy is very flexible allowing users to setup their sn‐
89 mpd processes in as secure a method as possible.
90 The following port types are defined for snmpd:
92 snmp_port_t
95 Default Defined Ports:
99 tcp 199,1161,161-162,10161-10162
100 udp 161-162,10161-10162
101
103 The SELinux process type snmpd_t can manage files labeled with the fol‐
104 lowing file types. The paths listed are the default paths for these
105 file types. Note the processes UID still need to have DAC permissions.
106 cluster_conf_t
108 /etc/cluster(/.*)?
110 cluster_var_lib_t
112 /var/lib/pcsd(/.*)?
114 /var/lib/cluster(/.*)?
115 /var/lib/openais(/.*)?
116 /var/lib/pengine(/.*)?
117 /var/lib/corosync(/.*)?
118 /usr/lib/heartbeat(/.*)?
119 /var/lib/heartbeat(/.*)?
120 /var/lib/pacemaker(/.*)?
121 cluster_var_run_t
123 /var/run/crm(/.*)?
125 /var/run/cman_.*
126 /var/run/rsctmp(/.*)?
127 /var/run/aisexec.*
128 /var/run/heartbeat(/.*)?
129 /var/run/pcsd-ruby.socket
130 /var/run/corosync-qnetd(/.*)?
131 /var/run/corosync-qdevice(/.*)?
132 /var/run/corosync.pid
133 /var/run/cpglockd.pid
134 /var/run/rgmanager.pid
135 /var/run/cluster/rgmanager.sk
136 krb5_host_rcache_t
138 /var/tmp/krb5_0.rcache2
140 /var/cache/krb5rcache(/.*)?
141 /var/tmp/nfs_0
142 /var/tmp/DNS_25
143 /var/tmp/host_0
144 /var/tmp/imap_0
145 /var/tmp/HTTP_23
146 /var/tmp/HTTP_48
147 /var/tmp/ldap_55
148 /var/tmp/ldap_487
149 /var/tmp/ldapmap1_0
150 root_t
152 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
154 /
155 /initrd
156 snmpd_log_t
158 /var/log/snmpd.log.*
160 snmpd_var_lib_t
162 /var/agentx(/.*)?
164 /var/net-snmp(/.*)
165 /var/lib/snmp(/.*)?
166 /var/net-snmp(/.*)?
167 /var/lib/net-snmp(/.*)?
168 /var/spool/snmptt(/.*)?
169 /usr/share/snmp/mibs/.index
170 snmpd_var_run_t
172 /var/run/snmpd(/.*)?
174 /var/run/net-snmp(/.*)?
175 /var/run/snmpd.pid
176
179 SELinux requires files to have an extended attribute to define the file
180 type.
181 You can see the context of a file using the -Z option to ls
183 Policy governs the access confined processes have to these files.
185 SELinux snmpd policy is very flexible allowing users to setup their sn‐
186 mpd processes in as secure a method as possible.
187 EQUIVALENCE DIRECTORIES
189 snmpd policy stores data with multiple different file context types un‐
192 der the /var/run/snmpd directory. If you would like to store the data
193 in a different directory you can use the semanage command to create an
194 equivalence mapping. If you wanted to store this data under the /srv
195 directory you would execute the following command:
196 semanage fcontext -a -e /var/run/snmpd /srv/snmpd
198 restorecon -R -v /srv/snmpd
199 STANDARD FILE CONTEXT
201 SELinux defines the file context types for the snmpd, if you wanted to
203 store files with these types in a different paths, you need to execute
204 the semanage command to specify alternate labeling and then use re‐
205 storecon to put the labels on disk.
206 semanage fcontext -a -t snmpd_exec_t '/srv/snmpd/content(/.*)?'
208 restorecon -R -v /srv/mysnmpd_content
209 Note: SELinux often uses regular expressions to specify labels that
211 match multiple files.
212 The following file types are defined for snmpd:
214 snmpd_exec_t
218 - Set files with the snmpd_exec_t type, if you want to transition an
220 executable to the snmpd_t domain.
221 Paths:
224 /usr/sbin/snmpd, /usr/sbin/snmptrapd
225 snmpd_initrc_exec_t
228 - Set files with the snmpd_initrc_exec_t type, if you want to transi‐
230 tion an executable to the snmpd_initrc_t domain.
231 snmpd_log_t
235 - Set files with the snmpd_log_t type, if you want to treat the data as
237 snmpd log data, usually stored under the /var/log directory.
238 snmpd_var_lib_t
242 - Set files with the snmpd_var_lib_t type, if you want to store the sn‐
244 mpd files under the /var/lib directory.
245 Paths:
248 /var/agentx(/.*)?, /var/net-snmp(/.*), /var/lib/snmp(/.*)?,
249 /var/net-snmp(/.*)?, /var/lib/net-snmp(/.*)?, /var/spool/sn‐
250 mptt(/.*)?, /usr/share/snmp/mibs/.index
251 snmpd_var_run_t
254 - Set files with the snmpd_var_run_t type, if you want to store the sn‐
256 mpd files under the /run or /var/run directory.
257 Paths:
260 /var/run/snmpd(/.*)?, /var/run/net-snmp(/.*)?, /var/run/snmpd.pid
261 Note: File context can be temporarily modified with the chcon command.
264 If you want to permanently change the file context you need to use the
265 semanage fcontext command. This will modify the SELinux labeling data‐
266 base. You will need to use restorecon to apply the labels.
267
270 semanage fcontext can also be used to manipulate default file context
271 mappings.
272 semanage permissive can also be used to manipulate whether or not a
274 process type is permissive.
275 semanage module can also be used to enable/disable/install/remove pol‐
277 icy modules.
278 semanage port can also be used to manipulate the port definitions
280 semanage boolean can also be used to manipulate the booleans
282 system-config-selinux is a GUI tool available to customize SELinux pol‐
285 icy settings.
286
289 This manual page was auto-generated using sepolicy manpage .
290
293 selinux(8), snmpd(8), semanage(8), restorecon(8), chcon(1), sepol‐
294 icy(8), setsebool(8)
295snmpd 23-10-20 snmpd_selinux(8)