1samba_net_selinux(8) SELinux Policy samba_net samba_net_selinux(8)
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6 samba_net_selinux - Security Enhanced Linux Policy for the samba_net
7 processes
8
10 Security-Enhanced Linux secures the samba_net processes via flexible
11 mandatory access control.
12 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.
16 For example:
18 ps -eZ | grep samba_net_t
20
24 The samba_net_t SELinux type can be entered via the samba_net_exec_t
25 file type.
26 The default entrypoint paths for the samba_net_t domain are the follow‐
28 ing:
29 /usr/bin/net
31
33 SELinux defines process types (domains) for each process running on the
34 system
35 You can see the context of a process using the -Z option to ps
37 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.
41 The following process types are defined for samba_net:
43 samba_net_t
45 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.
50
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.
57 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.
63 setsebool -P authlogin_nsswitch_use_ldap 1
65 If you want to allow all domains to execute in fips_mode, you must turn
69 on the fips_mode boolean. Enabled by default.
70 setsebool -P fips_mode 1
72 If you want to allow confined applications to run with kerberos, you
76 must turn on the kerberos_enabled boolean. Disabled by default.
77 setsebool -P kerberos_enabled 1
79 If you want to allow system to run with NIS, you must turn on the
83 nis_enabled boolean. Disabled by default.
84 setsebool -P nis_enabled 1
86 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.
91 setsebool -P nscd_use_shm 1
93 If you want to support NFS home directories, you must turn on the
97 use_nfs_home_dirs boolean. Enabled by default.
98 setsebool -P use_nfs_home_dirs 1
100 If you want to support SAMBA home directories, you must turn on the
104 use_samba_home_dirs boolean. Disabled by default.
105 setsebool -P use_samba_home_dirs 1
107
111 The SELinux process type samba_net_t can manage files labeled with the
112 following file types. The paths listed are the default paths for these
113 file types. Note the processes UID still need to have DAC permissions.
114 auth_cache_t
116 /var/cache/coolkey(/.*)?
118 ctdbd_var_lib_t
120 /var/lib/ctdb(/.*)?
122 /var/lib/ctdbd(/.*)?
123 krb5_keytab_t
125 /var/kerberos/krb5(/.*)?
127 /etc/krb5.keytab
128 /etc/krb5kdc/kadm5.keytab
129 /var/kerberos/krb5kdc/kadm5.keytab
130 realmd_var_cache_t
132 /var/cache/realmd(/.*)?
134 samba_net_tmp_t
136 samba_secrets_t
139 /etc/samba/smbpasswd
141 /etc/samba/passdb.tdb
142 /etc/samba/MACHINE.SID
143 /etc/samba/secrets.tdb
144 samba_var_t
146 /var/nmbd(/.*)?
148 /var/lib/samba(/.*)?
149 /var/cache/samba(/.*)?
150
153 SELinux requires files to have an extended attribute to define the file
154 type.
155 You can see the context of a file using the -Z option to ls
157 Policy governs the access confined processes have to these files.
159 SELinux samba_net policy is very flexible allowing users to setup their
160 samba_net processes in as secure a method as possible.
161 STANDARD FILE CONTEXT
163 SELinux defines the file context types for the samba_net, if you wanted
165 to store files with these types in a diffent paths, you need to execute
166 the semanage command to sepecify alternate labeling and then use
167 restorecon to put the labels on disk.
168 semanage fcontext -a -t samba_net_tmp_t '/srv/mysamba_net_con‐
170 tent(/.*)?'
171 restorecon -R -v /srv/mysamba_net_content
172 Note: SELinux often uses regular expressions to specify labels that
174 match multiple files.
175 The following file types are defined for samba_net:
177 samba_net_exec_t
181 - Set files with the samba_net_exec_t type, if you want to transition
183 an executable to the samba_net_t domain.
184 samba_net_tmp_t
188 - Set files with the samba_net_tmp_t type, if you want to store samba
190 net temporary files in the /tmp directories.
191 Note: File context can be temporarily modified with the chcon command.
195 If you want to permanently change the file context you need to use the
196 semanage fcontext command. This will modify the SELinux labeling data‐
197 base. You will need to use restorecon to apply the labels.
198
201 semanage fcontext can also be used to manipulate default file context
202 mappings.
203 semanage permissive can also be used to manipulate whether or not a
205 process type is permissive.
206 semanage module can also be used to enable/disable/install/remove pol‐
208 icy modules.
209 semanage boolean can also be used to manipulate the booleans
211 system-config-selinux is a GUI tool available to customize SELinux pol‐
214 icy settings.
215
218 This manual page was auto-generated using sepolicy manpage .
219
222 selinux(8), samba_net(8), semanage(8), restorecon(8), chcon(1), sepol‐
223 icy(8), setsebool(8)
224samba_net 19-12-02 samba_net_selinux(8)