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. Enabled 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. Disabled 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 /etc/krb5.keytab
127 /etc/krb5kdc/kadm5.keytab
128 /var/kerberos/krb5kdc/kadm5.keytab
129 realmd_var_cache_t
131 /var/cache/realmd(/.*)?
133 samba_net_tmp_t
135 samba_secrets_t
138 /etc/samba/smbpasswd
140 /etc/samba/passdb.tdb
141 /etc/samba/MACHINE.SID
142 /etc/samba/secrets.tdb
143 samba_var_t
145 /var/nmbd(/.*)?
147 /var/lib/samba(/.*)?
148 /var/cache/samba(/.*)?
149
152 SELinux requires files to have an extended attribute to define the file
153 type.
154 You can see the context of a file using the -Z option to ls
156 Policy governs the access confined processes have to these files.
158 SELinux samba_net policy is very flexible allowing users to setup their
159 samba_net processes in as secure a method as possible.
160 STANDARD FILE CONTEXT
162 SELinux defines the file context types for the samba_net, if you wanted
164 to store files with these types in a diffent paths, you need to execute
165 the semanage command to sepecify alternate labeling and then use
166 restorecon to put the labels on disk.
167 semanage fcontext -a -t samba_net_tmp_t '/srv/mysamba_net_con‐
169 tent(/.*)?'
170 restorecon -R -v /srv/mysamba_net_content
171 Note: SELinux often uses regular expressions to specify labels that
173 match multiple files.
174 The following file types are defined for samba_net:
176 samba_net_exec_t
180 - Set files with the samba_net_exec_t type, if you want to transition
182 an executable to the samba_net_t domain.
183 samba_net_tmp_t
187 - Set files with the samba_net_tmp_t type, if you want to store samba
189 net temporary files in the /tmp directories.
190 Note: File context can be temporarily modified with the chcon command.
194 If you want to permanently change the file context you need to use the
195 semanage fcontext command. This will modify the SELinux labeling data‐
196 base. You will need to use restorecon to apply the labels.
197
200 semanage fcontext can also be used to manipulate default file context
201 mappings.
202 semanage permissive can also be used to manipulate whether or not a
204 process type is permissive.
205 semanage module can also be used to enable/disable/install/remove pol‐
207 icy modules.
208 semanage boolean can also be used to manipulate the booleans
210 system-config-selinux is a GUI tool available to customize SELinux pol‐
213 icy settings.
214
217 This manual page was auto-generated using sepolicy manpage .
218
221 selinux(8), samba_net(8), semanage(8), restorecon(8), chcon(1), sepol‐
222 icy(8), setsebool(8)
223samba_net 19-05-30 samba_net_selinux(8)