Security-Enhanced Linux secures the rlogind processes via flexible mandatory access control.
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd serve for the rlogind_t, you must turn on the authlogin_nsswitch_use_ldap boolean.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to allow confined applications to run with kerberos for the rlogind_t, you must turn on the kerberos_enabled boolean.
setsebool -P kerberos_enabled 1
You can see the context of a file using the -Z option to lsP Policy governs the access confined processes have to these files. SELinux rlogind policy is very flexible allowing users to setup their rlogind processes in as secure a method as possible.
The following file types are defined for rlogind:
rlogind_exec_t
- Set files with the rlogind_exec_t type, if you want to transition an executable to the rlogind_t domain.
rlogind_home_t
- Set files with the rlogind_home_t type, if you want to store rlogind files in the users home directory.
rlogind_keytab_t
- Set files with the rlogind_keytab_t type, if you want to treat the files as kerberos keytab files.
rlogind_tmp_t
- Set files with the rlogind_tmp_t type, if you want to store rlogind temporary files in the /tmp directories.
rlogind_var_run_t
- Set files with the rlogind_var_run_t type, if you want to store the rlogind files under the /run directory.
Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels.
You can see the types associated with a port by using the following command:
semanage port -l
Policy governs the access confined processes have to these ports. SELinux rlogind policy is very flexible allowing users to setup their rlogind processes in as secure a method as possible.
The following port types are defined for rlogind:
Default Defined Ports: tcp 513
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux rlogind policy is very flexible allowing users to setup their rlogind processes in as secure a method as possible.
The following process types are defined for rlogind:
rlogind_t
Note: semanage permissive -a PROCESS_TYPE can be used to make a process type permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.
The SELinux user type rlogind_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions.
auth_cache_t
/var/cache/coolkey(/.*)?
auth_home_t
/root/.google_authenticator
/root/.google_authenticator~
/home/[^/]*/.google_authenticator
/home/[^/]*/.google_authenticator~
cgroup_t
/cgroup
/sys/fs/cgroup
faillog_t
/var/log/btmp.*
/var/run/faillock(/.*)?
/var/log/faillog
/var/log/tallylog
initrc_var_run_t