nmbd_selinux(8)

1nmbd_selinux(8)               SELinux Policy nmbd              nmbd_selinux(8)
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NAME

6       nmbd_selinux - Security Enhanced Linux Policy for the nmbd processes
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DESCRIPTION

9       Security-Enhanced  Linux secures the nmbd processes via flexible manda‐
10       tory access control.
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12       The nmbd processes execute with the nmbd_t SELinux type. You can  check
13       if  you  have  these processes running by executing the ps command with
14       the -Z qualifier.
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16       For example:
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18       ps -eZ | grep nmbd_t
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ENTRYPOINTS

23       The nmbd_t SELinux type can be entered via the nmbd_exec_t file type.
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25       The default entrypoint paths for the nmbd_t domain are the following:
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27       /usr/sbin/nmbd
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PROCESS TYPES

30       SELinux defines process types (domains) for each process running on the
31       system
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33       You can see the context of a process using the -Z option to ps
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35       Policy  governs  the  access confined processes have to files.  SELinux
36       nmbd policy is very flexible allowing users to setup  their  nmbd  pro‐
37       cesses in as secure a method as possible.
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39       The following process types are defined for nmbd:
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41       nmbd_t
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43       Note:  semanage  permissive  -a  nmbd_t can be used to make the process
44       type nmbd_t permissive. SELinux does  not  deny  access  to  permissive
45       process  types, but the AVC (SELinux denials) messages are still gener‐
46       ated.
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BOOLEANS

50       SELinux policy is customizable based on least  access  required.   nmbd
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run nmbd with the tightest access possible.
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56       If you want to allow all domains to execute in fips_mode, you must turn
57       on the fips_mode boolean. Enabled by default.
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59       setsebool -P fips_mode 1
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63       If  you  want to allow samba to share any file/directory read only, you
64       must turn on the samba_export_all_ro boolean. Disabled by default.
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66       setsebool -P samba_export_all_ro 1
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70       If you want to allow samba to share any file/directory read/write,  you
71       must turn on the samba_export_all_rw boolean. Disabled by default.
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73       setsebool -P samba_export_all_rw 1
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PORT TYPES

78       SELinux defines port types to represent TCP and UDP ports.
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80       You  can  see  the  types associated with a port by using the following
81       command:
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83       semanage port -l
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86       Policy governs the access  confined  processes  have  to  these  ports.
87       SELinux nmbd policy is very flexible allowing users to setup their nmbd
88       processes in as secure a method as possible.
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90       The following port types are defined for nmbd:
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92
93       nmbd_port_t
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97       Default Defined Ports:
98                 udp 137,138
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MANAGED FILES

101       The SELinux process type nmbd_t can manage files labeled with the  fol‐
102       lowing  file  types.   The paths listed are the default paths for these
103       file types.  Note the processes UID still need to have DAC permissions.
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105       cluster_conf_t
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107            /etc/cluster(/.*)?
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109       cluster_var_lib_t
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111            /var/lib/pcsd(/.*)?
112            /var/lib/cluster(/.*)?
113            /var/lib/openais(/.*)?
114            /var/lib/pengine(/.*)?
115            /var/lib/corosync(/.*)?
116            /usr/lib/heartbeat(/.*)?
117            /var/lib/heartbeat(/.*)?
118            /var/lib/pacemaker(/.*)?
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120       cluster_var_run_t
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122            /var/run/crm(/.*)?
123            /var/run/cman_.*
124            /var/run/rsctmp(/.*)?
125            /var/run/aisexec.*
126            /var/run/heartbeat(/.*)?
127            /var/run/corosync-qnetd(/.*)?
128            /var/run/corosync-qdevice(/.*)?
129            /var/run/corosync.pid
130            /var/run/cpglockd.pid
131            /var/run/rgmanager.pid
132            /var/run/cluster/rgmanager.sk
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134       ctdbd_var_lib_t
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136            /var/lib/ctdb(/.*)?
137            /var/lib/ctdbd(/.*)?
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139       nmbd_var_run_t
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141            /var/run/nmbd(/.*)?
142            /var/run/samba/nmbd(/.*)?
143            /var/run/samba/nmbd.pid
144            /var/run/samba/messages.tdb
145            /var/run/samba/namelist.debug
146            /var/run/samba/unexpected.tdb
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148       non_security_file_type
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151       noxattrfs
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153            all files on file systems which do not support extended attributes
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155       root_t
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157            /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
158            /
159            /initrd
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161       samba_log_t
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163            /var/log/samba(/.*)?
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165

FILE CONTEXTS

167       SELinux requires files to have an extended attribute to define the file
168       type.
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170       You can see the context of a file using the -Z option to ls
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172       Policy  governs  the  access  confined  processes  have to these files.
173       SELinux nmbd policy is very flexible allowing users to setup their nmbd
174       processes in as secure a method as possible.
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176       EQUIVALENCE DIRECTORIES
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178
179       nmbd  policy  stores  data  with  multiple different file context types
180       under the /var/run/samba/nmbd directory.  If you would  like  to  store
181       the  data  in a different directory you can use the semanage command to
182       create an equivalence mapping.  If you wanted to store this data  under
183       the /srv directory you would execute the following command:
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185       semanage fcontext -a -e /var/run/samba/nmbd /srv/nmbd
186       restorecon -R -v /srv/nmbd
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188       STANDARD FILE CONTEXT
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190       SELinux  defines  the file context types for the nmbd, if you wanted to
191       store files with these types in a diffent paths, you  need  to  execute
192       the  semanage  command  to  sepecify  alternate  labeling  and then use
193       restorecon to put the labels on disk.
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195       semanage fcontext -a -t nmbd_var_run_t '/srv/mynmbd_content(/.*)?'
196       restorecon -R -v /srv/mynmbd_content
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198       Note: SELinux often uses regular expressions  to  specify  labels  that
199       match multiple files.
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201       The following file types are defined for nmbd:
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205       nmbd_exec_t
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207       -  Set  files  with  the nmbd_exec_t type, if you want to transition an
208       executable to the nmbd_t domain.
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212       nmbd_var_run_t
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214       - Set files with the nmbd_var_run_t type, if you want to store the nmbd
215       files under the /run or /var/run directory.
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218       Paths:
219            /var/run/nmbd(/.*)?,                    /var/run/samba/nmbd(/.*)?,
220            /var/run/samba/nmbd.pid,              /var/run/samba/messages.tdb,
221            /var/run/samba/namelist.debug, /var/run/samba/unexpected.tdb
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223
224       Note:  File context can be temporarily modified with the chcon command.
225       If you want to permanently change the file context you need to use  the
226       semanage fcontext command.  This will modify the SELinux labeling data‐
227       base.  You will need to use restorecon to apply the labels.
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COMMANDS

231       semanage fcontext can also be used to manipulate default  file  context
232       mappings.
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234       semanage  permissive  can  also  be used to manipulate whether or not a
235       process type is permissive.
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237       semanage module can also be used to enable/disable/install/remove  pol‐
238       icy modules.
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240       semanage port can also be used to manipulate the port definitions
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242       semanage boolean can also be used to manipulate the booleans
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244
245       system-config-selinux is a GUI tool available to customize SELinux pol‐
246       icy settings.
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AUTHOR

250       This manual page was auto-generated using sepolicy manpage .
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