samba_net_selinux(8)

1samba_net_selinux(8)       SELinux Policy samba_net       samba_net_selinux(8)
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NAME

6       samba_net_selinux  -  Security  Enhanced Linux Policy for the samba_net
7       processes
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DESCRIPTION

10       Security-Enhanced Linux secures the samba_net  processes  via  flexible
11       mandatory access control.
12
13       The  samba_net processes execute with the samba_net_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 samba_net_t
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ENTRYPOINTS

24       The  samba_net_t  SELinux  type can be entered via the samba_net_exec_t
25       file type.
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27       The default entrypoint paths for the samba_net_t domain are the follow‐
28       ing:
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30       /usr/bin/net
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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       samba_net  policy  is  very  flexible  allowing  users  to  setup their
40       samba_net processes in as secure a method as possible.
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42       The following process types are defined for samba_net:
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44       samba_net_t
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46       Note: semanage permissive -a  samba_net_t  can  be  used  to  make  the
47       process  type  samba_net_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.
54       samba_net policy is extremely flexible and has  several  booleans  that
55       allow  you to manipulate the policy and run samba_net with the tightest
56       access possible.
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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 deny any process from ptracing or  debugging  any  other
69       processes,  you  must  turn  on  the  deny_ptrace  boolean.  Enabled by
70       default.
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72       setsebool -P deny_ptrace 1
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76       If you want to allow any process  to  mmap  any  file  on  system  with
77       attribute  file_type,  you must turn on the domain_can_mmap_files bool‐
78       ean. Enabled by default.
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80       setsebool -P domain_can_mmap_files 1
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84       If you want to allow all domains write to kmsg_device, while kernel  is
85       executed  with  systemd.log_target=kmsg parameter, you must turn on the
86       domain_can_write_kmsg boolean. Disabled by default.
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88       setsebool -P domain_can_write_kmsg 1
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92       If you want to allow all domains to use other domains file descriptors,
93       you must turn on the domain_fd_use boolean. Enabled by default.
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95       setsebool -P domain_fd_use 1
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99       If  you  want to allow all domains to have the kernel load modules, you
100       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
101       default.
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103       setsebool -P domain_kernel_load_modules 1
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107       If you want to allow all domains to execute in fips_mode, you must turn
108       on the fips_mode boolean. Enabled by default.
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110       setsebool -P fips_mode 1
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114       If you want to enable reading of urandom for all domains, you must turn
115       on the global_ssp boolean. Disabled by default.
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117       setsebool -P global_ssp 1
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121       If  you  want  to allow confined applications to run with kerberos, you
122       must turn on the kerberos_enabled boolean. Enabled by default.
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124       setsebool -P kerberos_enabled 1
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128       If you want to allow system to run with  NIS,  you  must  turn  on  the
129       nis_enabled boolean. Disabled by default.
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131       setsebool -P nis_enabled 1
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135       If  you  want to allow confined applications to use nscd shared memory,
136       you must turn on the nscd_use_shm boolean. Disabled by default.
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138       setsebool -P nscd_use_shm 1
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142       If you want to support NFS home  directories,  you  must  turn  on  the
143       use_nfs_home_dirs boolean. Disabled by default.
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145       setsebool -P use_nfs_home_dirs 1
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149       If  you  want  to  support SAMBA home directories, you must turn on the
150       use_samba_home_dirs boolean. Disabled by default.
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152       setsebool -P use_samba_home_dirs 1
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MANAGED FILES

157       The SELinux process type samba_net_t can manage files labeled with  the
158       following file types.  The paths listed are the default paths for these
159       file types.  Note the processes UID still need to have DAC permissions.
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161       auth_cache_t
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163            /var/cache/coolkey(/.*)?
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165       ctdbd_var_lib_t
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167            /var/lib/ctdb(/.*)?
168            /var/lib/ctdbd(/.*)?
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170       krb5_keytab_t
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172            /etc/krb5.keytab
173            /etc/krb5kdc/kadm5.keytab
174            /var/kerberos/krb5kdc/kadm5.keytab
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176       realmd_var_cache_t
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178            /var/cache/realmd(/.*)?
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180       samba_net_tmp_t
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183       samba_secrets_t
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185            /etc/samba/smbpasswd
186            /etc/samba/passdb.tdb
187            /etc/samba/MACHINE.SID
188            /etc/samba/secrets.tdb
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190       samba_var_t
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192            /var/nmbd(/.*)?
193            /var/lib/samba(/.*)?
194            /var/cache/samba(/.*)?
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FILE CONTEXTS

198       SELinux requires files to have an extended attribute to define the file
199       type.
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201       You can see the context of a file using the -Z option to ls
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203       Policy  governs  the  access  confined  processes  have to these files.
204       SELinux samba_net policy is very flexible allowing users to setup their
205       samba_net processes in as secure a method as possible.
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207       STANDARD FILE CONTEXT
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209       SELinux defines the file context types for the samba_net, if you wanted
210       to store files with these types in a diffent paths, you need to execute
211       the  semanage  command  to  sepecify  alternate  labeling  and then use
212       restorecon to put the labels on disk.
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214       semanage  fcontext   -a   -t   samba_net_tmp_t   '/srv/mysamba_net_con‐
215       tent(/.*)?'
216       restorecon -R -v /srv/mysamba_net_content
217
218       Note:  SELinux  often  uses  regular expressions to specify labels that
219       match multiple files.
220
221       The following file types are defined for samba_net:
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225       samba_net_exec_t
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227       - Set files with the samba_net_exec_t type, if you want  to  transition
228       an executable to the samba_net_t domain.
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232       samba_net_tmp_t
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234       -  Set  files with the samba_net_tmp_t type, if you want to store samba
235       net temporary files in the /tmp directories.
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239       Note: File context can be temporarily modified with the chcon  command.
240       If  you want to permanently change the file context you need to use the
241       semanage fcontext command.  This will modify the SELinux labeling data‐
242       base.  You will need to use restorecon to apply the labels.
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COMMANDS

246       semanage  fcontext  can also be used to manipulate default file context
247       mappings.
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249       semanage permissive can also be used to manipulate  whether  or  not  a
250       process type is permissive.
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252       semanage  module can also be used to enable/disable/install/remove pol‐
253       icy modules.
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255       semanage boolean can also be used to manipulate the booleans
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258       system-config-selinux is a GUI tool available to customize SELinux pol‐
259       icy settings.
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AUTHOR

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