NAME¶

nsd_crond_selinux - Security Enhanced Linux Policy for the nsd_crond processes

DESCRIPTION¶

Security-Enhanced Linux secures the nsd_crond processes via flexible mandatory access control.

The nsd_crond processes execute with the nsd_crond_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.

For example:

ps -eZ | grep nsd_crond_t

ENTRYPOINTS¶

The nsd_crond_t SELinux type can be entered via the nsd_exec_t file type.

The default entrypoint paths for the nsd_crond_t domain are the following:

/usr/sbin/nsd, /usr/sbin/nsdc, /usr/sbin/zonec, /usr/sbin/nsd-notify, /usr/sbin/nsd-control, /usr/sbin/nsd-checkconf, /usr/sbin/nsd-checkzone, /usr/sbin/nsd-control-setup

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 nsd_crond policy is very flexible allowing users to setup their nsd_crond processes in as secure a method as possible.

The following process types are defined for nsd_crond:

nsd_crond_t

Note: semanage permissive -a nsd_crond_t can be used to make the process type nsd_crond_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

BOOLEANS¶

SELinux policy is customizable based on least access required. nsd_crond policy is extremely flexible and has several booleans that allow you to manipulate the policy and run nsd_crond with the tightest access possible.

If you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default.

setsebool -P fips_mode 1

If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.

setsebool -P nis_enabled 1

MANAGED FILES¶

The SELinux process type nsd_crond_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.

krb5_host_rcache_t

/var/tmp/krb5_0.rcache2
/var/cache/krb5rcache(/.*)?
/var/tmp/nfs_0
/var/tmp/DNS_25
/var/tmp/host_0
/var/tmp/imap_0
/var/tmp/HTTP_23
/var/tmp/HTTP_48
/var/tmp/ldap_55
/var/tmp/ldap_487
/var/tmp/ldapmap1_0

nsd_zone_t

/var/lib/nsd(/.*)?
/etc/nsd/primary(/.*)?
/etc/nsd/secondary(/.*)?
/etc/nsd/nsd.db

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 policy modules.

semanage boolean can also be used to manipulate the booleans

system-config-selinux is a GUI tool available to customize SELinux policy settings.

AUTHOR¶

This manual page was auto-generated using sepolicy manpage .

SEE ALSO¶

selinux(8), nsd_crond(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)