1mscan_selinux(8) SELinux Policy mscan mscan_selinux(8)
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6 mscan_selinux - Security Enhanced Linux Policy for the mscan processes
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9 Security-Enhanced Linux secures the mscan processes via flexible manda‐
10 tory access control.
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12 The mscan processes execute with the mscan_t SELinux type. You can
13 check if you have these processes running by executing the ps command
14 with the -Z qualifier.
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16 For example:
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18 ps -eZ | grep mscan_t
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23 The mscan_t SELinux type can be entered via the mscan_exec_t file type.
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25 The default entrypoint paths for the mscan_t domain are the following:
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27 /usr/sbin/MailScanner
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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 mscan policy is very flexible allowing users to setup their mscan pro‐
37 cesses in as secure a method as possible.
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39 The following process types are defined for mscan:
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41 mscan_t
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43 Note: semanage permissive -a mscan_t can be used to make the process
44 type mscan_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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50 SELinux policy is customizable based on least access required. mscan
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run mscan with the tightest access possible.
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56 If you want to allow users to resolve user passwd entries directly from
57 ldap rather then using a sssd server, you must turn on the authlo‐
58 gin_nsswitch_use_ldap boolean. Disabled by default.
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60 setsebool -P authlogin_nsswitch_use_ldap 1
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64 If you want to allow all domains to execute in fips_mode, you must turn
65 on the fips_mode boolean. Enabled by default.
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67 setsebool -P fips_mode 1
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71 If you want to allow confined applications to run with kerberos, you
72 must turn on the kerberos_enabled boolean. Enabled by default.
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74 setsebool -P kerberos_enabled 1
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78 If you want to allow system to run with NIS, you must turn on the
79 nis_enabled boolean. Disabled by default.
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81 setsebool -P nis_enabled 1
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85 If you want to allow confined applications to use nscd shared memory,
86 you must turn on the nscd_use_shm boolean. Disabled by default.
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88 setsebool -P nscd_use_shm 1
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93 The SELinux process type mscan_t can manage files labeled with the fol‐
94 lowing file types. The paths listed are the default paths for these
95 file types. Note the processes UID still need to have DAC permissions.
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97 antivirus_var_run_t
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99 /var/run/clamd.*
100 /var/run/clamav.*
101 /var/run/amavis(d)?(/.*)?
102 /var/run/amavis(d)?/clamd.pid
103 /var/run/amavisd-snmp-subagent.pid
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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 mqueue_spool_t
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136 /var/spool/(client)?mqueue(/.*)?
137 /var/spool/mqueue.in(/.*)?
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139 mscan_spool_t
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141 /var/spool/MailScanner(/.*)?
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143 mscan_tmp_t
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146 mscan_var_run_t
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148 /var/run/MailScanner.pid
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150 root_t
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152 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
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154 /initrd
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158 SELinux requires files to have an extended attribute to define the file
159 type.
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161 You can see the context of a file using the -Z option to ls
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163 Policy governs the access confined processes have to these files.
164 SELinux mscan policy is very flexible allowing users to setup their
165 mscan processes in as secure a method as possible.
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167 STANDARD FILE CONTEXT
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169 SELinux defines the file context types for the mscan, if you wanted to
170 store files with these types in a diffent paths, you need to execute
171 the semanage command to sepecify alternate labeling and then use
172 restorecon to put the labels on disk.
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174 semanage fcontext -a -t mscan_var_run_t '/srv/mymscan_content(/.*)?'
175 restorecon -R -v /srv/mymscan_content
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177 Note: SELinux often uses regular expressions to specify labels that
178 match multiple files.
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180 The following file types are defined for mscan:
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184 mscan_etc_t
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186 - Set files with the mscan_etc_t type, if you want to store mscan files
187 in the /etc directories.
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190 Paths:
191 /etc/MailScanner(/.*)?, /etc/sysconfig/MailScanner, /etc/syscon‐
192 fig/update_spamassassin
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195 mscan_exec_t
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197 - Set files with the mscan_exec_t type, if you want to transition an
198 executable to the mscan_t domain.
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202 mscan_initrc_exec_t
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204 - Set files with the mscan_initrc_exec_t type, if you want to transi‐
205 tion an executable to the mscan_initrc_t domain.
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209 mscan_spool_t
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211 - Set files with the mscan_spool_t type, if you want to store the mscan
212 files under the /var/spool directory.
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216 mscan_tmp_t
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218 - Set files with the mscan_tmp_t type, if you want to store mscan tem‐
219 porary files in the /tmp directories.
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223 mscan_var_run_t
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225 - Set files with the mscan_var_run_t type, if you want to store the
226 mscan files under the /run or /var/run directory.
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230 Note: File context can be temporarily modified with the chcon command.
231 If you want to permanently change the file context you need to use the
232 semanage fcontext command. This will modify the SELinux labeling data‐
233 base. You will need to use restorecon to apply the labels.
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237 semanage fcontext can also be used to manipulate default file context
238 mappings.
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240 semanage permissive can also be used to manipulate whether or not a
241 process type is permissive.
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243 semanage module can also be used to enable/disable/install/remove pol‐
244 icy modules.
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246 semanage boolean can also be used to manipulate the booleans
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249 system-config-selinux is a GUI tool available to customize SELinux pol‐
250 icy settings.
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254 This manual page was auto-generated using sepolicy manpage .
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258 selinux(8), mscan(8), semanage(8), restorecon(8), chcon(1), sepol‐
259 icy(8), setsebool(8)
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263mscan 19-06-18 mscan_selinux(8)