unconfined_sendmail_selinux(8)

1unconfined_sendmail_selSiEnLuixn(u8x)Policy unconfined_suenncdomnafiilned_sendmail_selinux(8)
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NAME

6       unconfined_sendmail_selinux  -  Security  Enhanced Linux Policy for the
7       unconfined_sendmail processes
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DESCRIPTION

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

24       The  unconfined_sendmail_t  SELinux  type  can be entered via the send‐
25       mail_exec_t file type.
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27       The default entrypoint paths for the unconfined_sendmail_t  domain  are
28       the following:
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30       /usr/sbin/sendmail(.sendmail)?,     /usr/bin/esmtp,    /usr/sbin/rmail,
31       /usr/sbin/ssmtp,       /usr/lib/sendmail,       /usr/bin/esmtp-wrapper,
32       /var/qmail/bin/sendmail, /usr/sbin/sendmail.postfix
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PROCESS TYPES

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

55       SELinux  policy is customizable based on least access required.  uncon‐
56       fined_sendmail policy is extremely flexible and  has  several  booleans
57       that  allow  you  to  manipulate the policy and run unconfined_sendmail
58       with the tightest access possible.
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62       If you want to deny user domains applications to map a memory region as
63       both  executable  and  writable,  this  is dangerous and the executable
64       should be reported in bugzilla, you must turn on the deny_execmem bool‐
65       ean. Enabled by default.
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67       setsebool -P deny_execmem 1
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71       If you want to allow all domains to execute in fips_mode, you must turn
72       on the fips_mode boolean. Enabled by default.
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74       setsebool -P fips_mode 1
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78       If you want to control the ability to mmap a low area  of  the  address
79       space,  as  configured  by /proc/sys/vm/mmap_min_addr, you must turn on
80       the mmap_low_allowed boolean. Disabled by default.
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82       setsebool -P mmap_low_allowed 1
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86       If you want to disable kernel module loading,  you  must  turn  on  the
87       secure_mode_insmod boolean. Enabled by default.
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89       setsebool -P secure_mode_insmod 1
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93       If  you  want to allow unconfined executables to make their heap memory
94       executable.  Doing this is a really  bad  idea.  Probably  indicates  a
95       badly  coded  executable, but could indicate an attack. This executable
96       should  be  reported  in  bugzilla,  you  must  turn  on   the   selin‐
97       uxuser_execheap boolean. Disabled by default.
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99       setsebool -P selinuxuser_execheap 1
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103       If  you  want  to allow unconfined executables to make their stack exe‐
104       cutable.  This should never, ever be necessary.  Probably  indicates  a
105       badly  coded  executable, but could indicate an attack. This executable
106       should be reported in bugzilla, you must turn on the  selinuxuser_exec‐
107       stack boolean. Disabled by default.
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109       setsebool -P selinuxuser_execstack 1
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MANAGED FILES

114       The SELinux process type unconfined_sendmail_t can manage files labeled
115       with the following file types.  The paths listed are the default  paths
116       for  these  file  types.  Note the processes UID still need to have DAC
117       permissions.
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119       file_type
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121            all files on the system
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COMMANDS

125       semanage fcontext can also be used to manipulate default  file  context
126       mappings.
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128       semanage  permissive  can  also  be used to manipulate whether or not a
129       process type is permissive.
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131       semanage module can also be used to enable/disable/install/remove  pol‐
132       icy modules.
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134       semanage boolean can also be used to manipulate the booleans
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137       system-config-selinux is a GUI tool available to customize SELinux pol‐
138       icy settings.
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AUTHOR

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