NAME¶

semanage - SELinux Policy Management tool

SYNOPSIS¶

Output local customizations semanage [ -S store ] -o [ output_file | - ] Input local customizations semanage [ -S store ] -i [ input_file | - ] Manage booleans. Booleans allow the administrator to modify the confinement of processes based on his configuration. semanage boolean [-S store] -{d|m|l|D} [-n] [--on|--off|-1|-0] -F boolean | boolean_file Manage SELinux confined users (Roles and levels for an SELinux user) semanage user [-S store] -{a|d|m|l|D} [-LnPrR] selinux_name Manage login mappings between linux users and SELinux confined users. semanage login [-S store] -{a|d|m|l|D} [-nrs] login_name | %groupname Manage policy modules. semanage module [-S store] -{a|d|l} [-m [--enable | --disable] ] module_name Manage network port type definitions semanage port [-S store] -{a|d|m|l|D} [-nrt] [-p proto] port | port_range Manage network interface type definitions semanage interface [-S store] -{a|d|m|l|D} [-nrt] interface_spec Manage network node type definitions semanage node [-S store] -{a|d|m|l|D} [-nrt] [ -p protocol ] [-M netmask] address Manage file context mapping definitions semanage fcontext [-S store] -{a|d|m|l|D} [-fnrst] file_spec semanage fcontext [-S store] -{a|d|m|l|D} [-n] -e replacement target Manage processes type enforcement mode semanage permissive [-S store] -{a|d|l|D} [-n] type Disable/Enable dontaudit rules in policy semanage dontaudit [-S store] [ on | off ] Execute multiple commands within a single transaction. semanage [-S store] -i command-file

DESCRIPTION¶

semanage is used to configure certain elements of SELinux policy without requiring modification to or recompilation from policy sources. This includes the mapping from Linux usernames to SELinux user identities (which controls the initial security context assigned to Linux users when they login and bounds their authorized role set) as well as security context mappings for various kinds of objects, such as network ports, interfaces, and nodes (hosts) as well as the file context mapping. See the EXAMPLES section below for some examples of common usage. Note that the semanage login command deals with the mapping from Linux usernames (logins) to SELinux user identities, while the semanage user command deals with the mapping from SELinux user identities to authorized role sets. In most cases, only the former mapping needs to be adjusted by the administrator; the latter is principally defined by the base policy and usually does not require modification.

OPTIONS¶

-a, --add

Add a OBJECT record NAME

-d, --delete

Delete a OBJECT record NAME

-D, --deleteall

Remove all OBJECTS local customizations

--disable

Disable a policy module, requires -m option

 

Currently modules only.

--enable

Enable a disabled policy module, requires -m option

 

Currently modules only.

-e, --equal

Substitute target path with sourcepath when generating default label. This is used with fcontext. Requires source and target path arguments. The context labeling for the target subtree is made equivalent to that defined for the source.

-f, --ftype

File Type. This is used with fcontext. Requires a file type as shown in the mode field by ls, e.g. use -d to match only directories or -- to match only regular files.

-F, --file

Set multiple records from the input file. When used with the -l --list, it will output the current settings to stdout in the proper format.

 

Currently booleans only.

 

-h, --help

display this message

-l, --list

List the OBJECTS

-C, --locallist

List only locally defined settings, not base policy settings.

-L, --level

Default SELinux Level for SELinux use, s0 Default. (MLS/MCS Systems only)

-m, --modify

Modify a OBJECT record NAME

-M, --mask

Network Mask

-n, --noheading

Do not print heading when listing OBJECTS.

-p, --proto

Protocol for the specified port (tcp|udp) or internet protocol version for the specified node (ipv4|ipv6).

-r, --range

MLS/MCS Security Range (MLS/MCS Systems only)

-R, --role

SELinux Roles. You must enclose multiple roles within quotes, separate by spaces. Or specify -R multiple times.

-P, --prefix

SELinux Prefix. Prefix added to home_dir_t and home_t for labeling users home directories.

-s, --seuser

SELinux user name

-S, --store

Select and alternate SELinux store to manage

-t, --type

SELinux Type for the object

-i, --input

Take a set of commands from a specified file and load them in a single transaction.

-o, --output

Output all local customizations into a file. This file than can be used with the semanage -i command to customize other machines to match the local machine.

 

EXAMPLE¶

SELinux user
List SELinux users
# semanage user -l

SELinux login
Change joe to login as staff_u
# semanage login -a -s staff_u joe
Change the group clerks to login as user_u
# semanage login -a -s user_u %clerks

File contexts remember to run restorecon after you set the file context
Add file-context for everything under /web
# semanage fcontext -a -t httpd_sys_content_t "/web(/.*)?"
# restorecon -R -v /web

Substitute /home1 with /home when setting file context
# semanage fcontext -a -e /home /home1
# restorecon -R -v /home1

For home directories under top level directory, for example /disk6/home,
execute the following commands.
# semanage fcontext -a -t home_root_t "/disk6"
# semanage fcontext -a -e /home /disk6/home
# restorecon -R -v /disk6

Port contexts
Allow Apache to listen on tcp port 81
# semanage port -a -t http_port_t -p tcp 81

Change apache to a permissive domain
# semanage permissive -a httpd_t

Turn off dontaudit rules
# semanage dontaudit off

Managing multiple machines
Multiple machines that need the same customizations.
Extract customizations off first machine, copy them
to second and import them.

# semanage -o /tmp/local.selinux
# scp /tmp/local.selinux secondmachine:/tmp
# ssh secondmachine
# semanage -i /tmp/local.selinux

If these customizations include file context, you need to apply the
context using restorecon.

AUTHOR¶

This man page was written by Daniel Walsh <dwalsh@redhat.com> and Russell Coker <rcoker@redhat.com>. Examples by Thomas Bleher <ThomasBleher@gmx.de>.