postfix_qmgr_selinux(8)

1postfix_qmgr_selinux(8)   SELinux Policy postfix_qmgr  postfix_qmgr_selinux(8)
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NAME

6       postfix_qmgr_selinux  -  Security  Enhanced  Linux Policy for the post‐
7       fix_qmgr processes
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DESCRIPTION

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

24       The   postfix_qmgr_t   SELinux  type  can  be  entered  via  the  post‐
25       fix_qmgr_exec_t file type.
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27       The default entrypoint paths for the postfix_qmgr_t domain are the fol‐
28       lowing:
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30       /usr/libexec/postfix/(n)?qmgr
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PROCESS TYPES

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

53       SELinux  policy  is customizable based on least access required.  post‐
54       fix_qmgr policy is extremely flexible and  has  several  booleans  that
55       allow you to manipulate the policy and run postfix_qmgr with the tight‐
56       est access possible.
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60       If you want to allow all domains to execute in fips_mode, you must turn
61       on the fips_mode boolean. Enabled by default.
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63       setsebool -P fips_mode 1
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67       If  you  want  to  allow  system  to run with NIS, you must turn on the
68       nis_enabled boolean. Disabled by default.
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70       setsebool -P nis_enabled 1
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MANAGED FILES

75       The SELinux process type postfix_qmgr_t can manage files  labeled  with
76       the  following  file types.  The paths listed are the default paths for
77       these file types.  Note the processes UID still need to have  DAC  per‐
78       missions.
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80       anon_inodefs_t
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83       postfix_spool_t
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85            /var/spool/postfix.*
86            /var/spool/postfix/defer(/.*)?
87            /var/spool/postfix/flush(/.*)?
88            /var/spool/postfix/deferred(/.*)?
89            /var/spool/postfix/maildrop(/.*)?
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91       postfix_var_run_t
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93            /var/spool/postfix/pid/.*
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FILE CONTEXTS

97       SELinux requires files to have an extended attribute to define the file
98       type.
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100       You can see the context of a file using the -Z option to ls
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102       Policy governs the access  confined  processes  have  to  these  files.
103       SELinux  postfix_qmgr  policy  is very flexible allowing users to setup
104       their postfix_qmgr processes in as secure a method as possible.
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106       STANDARD FILE CONTEXT
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108       SELinux defines the file context types for  the  postfix_qmgr,  if  you
109       wanted  to store files with these types in a diffent paths, you need to
110       execute the semanage command to sepecify alternate  labeling  and  then
111       use restorecon to put the labels on disk.
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113       semanage  fcontext  -a  -t postfix_qmgr_tmp_t '/srv/mypostfix_qmgr_con‐
114       tent(/.*)?'
115       restorecon -R -v /srv/mypostfix_qmgr_content
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117       Note: SELinux often uses regular expressions  to  specify  labels  that
118       match multiple files.
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120       The following file types are defined for postfix_qmgr:
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124       postfix_qmgr_exec_t
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126       -  Set  files with the postfix_qmgr_exec_t type, if you want to transi‐
127       tion an executable to the postfix_qmgr_t domain.
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131       postfix_qmgr_tmp_t
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133       - Set files with the postfix_qmgr_tmp_t type,  if  you  want  to  store
134       postfix qmgr temporary files in the /tmp directories.
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138       Note:  File context can be temporarily modified with the chcon command.
139       If you want to permanently change the file context you need to use  the
140       semanage fcontext command.  This will modify the SELinux labeling data‐
141       base.  You will need to use restorecon to apply the labels.
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COMMANDS

145       semanage fcontext can also be used to manipulate default  file  context
146       mappings.
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148       semanage  permissive  can  also  be used to manipulate whether or not a
149       process type is permissive.
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151       semanage module can also be used to enable/disable/install/remove  pol‐
152       icy modules.
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154       semanage boolean can also be used to manipulate the booleans
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157       system-config-selinux is a GUI tool available to customize SELinux pol‐
158       icy settings.
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AUTHOR

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