nscd_selinux(8) nscd SELinux Policy documentation nscd_selinux(8)NAMEnscd_selinux - Security Enhanced Linux Policy for the nscd processes
DESCRIPTION
Security-Enhanced Linux secures the nscd processes via flexible manda‐
tory access control.
BOOLEANS
SELinux policy is customizable based on least access required. nscd
policy is extremely flexible and has several booleans that allow you to
manipulate the policy and run nscd with the tightest access possible.
If you want to allow confined applications to use nscd shared memory,
you must turn on the nscd_use_shm boolean.
setsebool -P nscd_use_shm 1
NSSWITCH DOMAIN
If you want to allow users to login using a sssd serve for the nscd_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
nscd_t, you must turn on the allow_kerberos boolean.
setsebool -P allow_kerberos 1
If you want to allow system to run with NI for the nscd_t, you must
turn on the allow_ypbind boolean.
setsebool -P allow_ypbind 1
FILE CONTEXTS
SELinux requires files to have an extended attribute to define the file
type.
You can see the context of a file using the -Z option to ls
Policy governs the access confined processes have to these files.
SELinux nscd policy is very flexible allowing users to setup their nscd
processes in as secure a method as possible.
The following file types are defined for nscd:
nscd_exec_t
- Set files with the nscd_exec_t type, if you want to transition an
executable to the nscd_t domain.
nscd_initrc_exec_t
- Set files with the nscd_initrc_exec_t type, if you want to transition
an executable to the nscd_initrc_t domain.
nscd_log_t
- Set files with the nscd_log_t type, if you want to treat the data as
nscd log data, usually stored under the /var/log directory.
nscd_unit_file_t
- Set files with the nscd_unit_file_t type, if you want to treat the
files as nscd unit content.
nscd_var_run_t
- Set files with the nscd_var_run_t type, if you want to store the nscd
files under the /run directory.
Paths:
/var/run/nscd.pid, /var/run/nscd(/.*)?, /var/db/nscd(/.*)?,
/var/run/.nscd_socket, /var/cache/nscd(/.*)?
Note: File context can be temporarily modified with the chcon command.
If you want to permanantly change the file context you need to use the
semanage fcontext command. This will modify the SELinux labeling data‐
base. You will need to use restorecon to apply the labels.
PROCESS TYPES
SELinux defines process types (domains) for each process running on the
system
You can see the context of a process using the -Z option to ps
Policy governs the access confined processes have to files. SELinux
nscd policy is very flexible allowing users to setup their nscd pro‐
cesses in as secure a method as possible.
The following process types are defined for nscd:
nscd_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.
COMMANDS
semanage fcontext can also be used to manipulate default file context
mappings.
semanage permissive can also be used to manipulate whether or not a
process type is permissive.
semanage module can also be used to enable/disable/install/remove pol‐
icy modules.
semanage boolean can also be used to manipulate the booleans
system-config-selinux is a GUI tool available to customize SELinux pol‐
icy settings.
AUTHOR
This manual page was autogenerated by genman.py.
SEE ALSOselinux(8), nscd(8), semanage(8), restorecon(8), chcon(1) , setse‐
bool(8)dwalsh@redhat.com nscd nscd_selinux(8)
