postgrey_selinux(8)

1postgrey_selinux(8)         SELinux Policy postgrey        postgrey_selinux(8)
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NAME

6       postgrey_selinux - Security Enhanced Linux Policy for the postgrey pro‐
7       cesses
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DESCRIPTION

10       Security-Enhanced Linux secures the  postgrey  processes  via  flexible
11       mandatory access control.
12
13       The  postgrey  processes  execute with the postgrey_t SELinux type. You
14       can check if you have these processes running by executing the ps  com‐
15       mand with the -Z qualifier.
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17       For example:
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19       ps -eZ | grep postgrey_t
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ENTRYPOINTS

24       The postgrey_t SELinux type can be entered via the postgrey_exec_t file
25       type.
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27       The default entrypoint paths for the postgrey_t domain are the  follow‐
28       ing:
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30       /usr/sbin/postgrey
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PROCESS TYPES

33       SELinux defines process types (domains) for each process running on the
34       system
35
36       You can see the context of a process using the -Z option to ps
37
38       Policy governs the access confined processes have  to  files.   SELinux
39       postgrey policy is very flexible allowing users to setup their postgrey
40       processes in as secure a method as possible.
41
42       The following process types are defined for postgrey:
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44       postgrey_t
45
46       Note: semanage permissive -a postgrey_t can be used to make the process
47       type  postgrey_t permissive. SELinux does not deny access to permissive
48       process types, but the AVC (SELinux denials) messages are still  gener‐
49       ated.
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51

BOOLEANS

53       SELinux  policy  is customizable based on least access required.  post‐
54       grey policy is extremely flexible and has several booleans  that  allow
55       you  to manipulate the policy and run postgrey with the tightest access
56       possible.
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59
60       If you want to allow users to resolve user passwd entries directly from
61       ldap  rather  then  using  a  sssd server, you must turn on the authlo‐
62       gin_nsswitch_use_ldap boolean. Disabled by default.
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64       setsebool -P authlogin_nsswitch_use_ldap 1
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68       If you want to allow all domains to execute in fips_mode, you must turn
69       on the fips_mode boolean. Enabled by default.
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71       setsebool -P fips_mode 1
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75       If  you  want  to allow confined applications to run with kerberos, you
76       must turn on the kerberos_enabled boolean. Enabled by default.
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78       setsebool -P kerberos_enabled 1
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82       If you want to allow system to run with  NIS,  you  must  turn  on  the
83       nis_enabled boolean. Disabled by default.
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85       setsebool -P nis_enabled 1
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89       If  you  want to allow confined applications to use nscd shared memory,
90       you must turn on the nscd_use_shm boolean. Disabled by default.
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92       setsebool -P nscd_use_shm 1
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PORT TYPES

97       SELinux defines port types to represent TCP and UDP ports.
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99       You can see the types associated with a port  by  using  the  following
100       command:
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102       semanage port -l
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104
105       Policy  governs  the  access  confined  processes  have to these ports.
106       SELinux postgrey policy is very flexible allowing users to setup  their
107       postgrey processes in as secure a method as possible.
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109       The following port types are defined for postgrey:
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111
112       postgrey_port_t
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116       Default Defined Ports:
117                 tcp 60000
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MANAGED FILES

120       The  SELinux  process type postgrey_t can manage files labeled with the
121       following file types.  The paths listed are the default paths for these
122       file types.  Note the processes UID still need to have DAC permissions.
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124       cluster_conf_t
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126            /etc/cluster(/.*)?
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128       cluster_var_lib_t
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130            /var/lib/pcsd(/.*)?
131            /var/lib/cluster(/.*)?
132            /var/lib/openais(/.*)?
133            /var/lib/pengine(/.*)?
134            /var/lib/corosync(/.*)?
135            /usr/lib/heartbeat(/.*)?
136            /var/lib/heartbeat(/.*)?
137            /var/lib/pacemaker(/.*)?
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139       cluster_var_run_t
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141            /var/run/crm(/.*)?
142            /var/run/cman_.*
143            /var/run/rsctmp(/.*)?
144            /var/run/aisexec.*
145            /var/run/heartbeat(/.*)?
146            /var/run/corosync-qnetd(/.*)?
147            /var/run/corosync-qdevice(/.*)?
148            /var/run/corosync.pid
149            /var/run/cpglockd.pid
150            /var/run/rgmanager.pid
151            /var/run/cluster/rgmanager.sk
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153       postfix_spool_type
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156       postgrey_spool_t
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158            /var/spool/postfix/postgrey(/.*)?
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160       postgrey_var_lib_t
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162            /var/lib/postgrey(/.*)?
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164       postgrey_var_run_t
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166            /var/run/postgrey(/.*)?
167            /var/run/postgrey.pid
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169       root_t
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171            /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
172            /
173            /initrd
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175

FILE CONTEXTS

177       SELinux requires files to have an extended attribute to define the file
178       type.
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180       You can see the context of a file using the -Z option to ls
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182       Policy governs the access  confined  processes  have  to  these  files.
183       SELinux  postgrey policy is very flexible allowing users to setup their
184       postgrey processes in as secure a method as possible.
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186       EQUIVALENCE DIRECTORIES
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188
189       postgrey policy stores data with multiple different file context  types
190       under  the /var/run/postgrey directory.  If you would like to store the
191       data in a different directory you can use the semanage command to  cre‐
192       ate an equivalence mapping.  If you wanted to store this data under the
193       /srv dirctory you would execute the following command:
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195       semanage fcontext -a -e /var/run/postgrey /srv/postgrey
196       restorecon -R -v /srv/postgrey
197
198       STANDARD FILE CONTEXT
199
200       SELinux defines the file context types for the postgrey, if you  wanted
201       to store files with these types in a diffent paths, you need to execute
202       the semanage command  to  sepecify  alternate  labeling  and  then  use
203       restorecon to put the labels on disk.
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205       semanage   fcontext   -a  -t  postgrey_var_run_t  '/srv/mypostgrey_con‐
206       tent(/.*)?'
207       restorecon -R -v /srv/mypostgrey_content
208
209       Note: SELinux often uses regular expressions  to  specify  labels  that
210       match multiple files.
211
212       The following file types are defined for postgrey:
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216       postgrey_etc_t
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218       - Set files with the postgrey_etc_t type, if you want to store postgrey
219       files in the /etc directories.
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223       postgrey_exec_t
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225       - Set files with the postgrey_exec_t type, if you want to transition an
226       executable to the postgrey_t domain.
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230       postgrey_initrc_exec_t
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232       -  Set files with the postgrey_initrc_exec_t type, if you want to tran‐
233       sition an executable to the postgrey_initrc_t domain.
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237       postgrey_spool_t
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239       - Set files with the postgrey_spool_t type, if you want  to  store  the
240       postgrey files under the /var/spool directory.
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244       postgrey_var_lib_t
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246       -  Set files with the postgrey_var_lib_t type, if you want to store the
247       postgrey files under the /var/lib directory.
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251       postgrey_var_run_t
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253       - Set files with the postgrey_var_run_t type, if you want to store  the
254       postgrey files under the /run or /var/run directory.
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257       Paths:
258            /var/run/postgrey(/.*)?, /var/run/postgrey.pid
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260
261       Note:  File context can be temporarily modified with the chcon command.
262       If you want to permanently change the file context you need to use  the
263       semanage fcontext command.  This will modify the SELinux labeling data‐
264       base.  You will need to use restorecon to apply the labels.
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COMMANDS

268       semanage fcontext can also be used to manipulate default  file  context
269       mappings.
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271       semanage  permissive  can  also  be used to manipulate whether or not a
272       process type is permissive.
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274       semanage module can also be used to enable/disable/install/remove  pol‐
275       icy modules.
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277       semanage port can also be used to manipulate the port definitions
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279       semanage boolean can also be used to manipulate the booleans
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282       system-config-selinux is a GUI tool available to customize SELinux pol‐
283       icy settings.
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AUTHOR

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