nfsd_selinux

Section: nfsd SELinux Policy documentation (8)
Updated: nfsd
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NAME

nfsd_selinux - Security Enhanced Linux Policy for the nfsd processes

DESCRIPTION

BOOLEANS

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

If you want to allow virt to manage nfs file, you must turn on the virt_use_nfs boolean.

setsebool -P virt_use_nfs 1

If you want to support NFS home directorie, you must turn on the use_nfs_home_dirs boolean.

setsebool -P use_nfs_home_dirs 1

If you want to allow xen to manage nfs file, you must turn on the xen_use_nfs boolean.

setsebool -P xen_use_nfs 1

If you want to allow ftp servers to use nfs used for public file transfer services, you must turn on the allow_ftpd_use_nfs boolean.

setsebool -P allow_ftpd_use_nfs 1

If you want to allow Git daemon system to access nfs file systems, you must turn on the git_system_use_nfs boolean.

setsebool -P git_system_use_nfs 1

If you want to allow qemu to use nfs file system, you must turn on the qemu_use_nfs boolean.

setsebool -P qemu_use_nfs 1

If you want to allow rsync servers to share nfs files system, you must turn on the rsync_use_nfs boolean.

setsebool -P rsync_use_nfs 1

If you want to allow Cobbler to access nfs file systems, you must turn on the cobbler_use_nfs boolean.

setsebool -P cobbler_use_nfs 1

If you want to allow httpd to access nfs file system, you must turn on the httpd_use_nfs boolean.

setsebool -P httpd_use_nfs 1

If you want to allow sge to access nfs file systems, you must turn on the sge_use_nfs boolean.

setsebool -P sge_use_nfs 1

If you want to allow confined virtual guests to manage nfs file, you must turn on the sanlock_use_nfs boolean.

setsebool -P sanlock_use_nfs 1

If you want to allow samba to export NFS volumes, you must turn on the samba_share_nfs boolean.

setsebool -P samba_share_nfs 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 lsP Policy governs the access confined processes have to these files. SELinux nfsd policy is very flexible allowing users to setup their nfsd processes in as secure a method as possible.

The following file types are defined for nfsd:

nfs_t

- Set files with the nfs_t type, if you want to treat the files as nfs data.

nfsd_exec_t

- Set files with the nfsd_exec_t type, if you want to transition an executable to the nfsd_t domain.

Paths:: /usr/sbin/rpc.mountd, /usr/sbin/rpc.nfsd

nfsd_initrc_exec_t

- Set files with the nfsd_initrc_exec_t type, if you want to transition an executable to the nfsd_initrc_t domain.

nfsd_ro_t

- Set files with the nfsd_ro_t type, if you want to treat the files as nfsd read/only content.

nfsd_rw_t

- Set files with the nfsd_rw_t type, if you want to treat the files as nfsd read/write content.

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.

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 psP Policy governs the access confined processes have to files. SELinux nfsd policy is very flexible allowing users to setup their nfsd processes in as secure a method as possible.

The following process types are defined for nfsd:

nfsd_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 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 autogenerated by genman.py.

This document was created by man2html, using the manual pages.
Time: 05:34:28 GMT, December 24, 2015