guest_selinux(8) guest SELinux Policy documentation guest_selinux(8)
NAME
guest_u - Least privledge terminal user role. - Security Enhanced Linux Policy
DESCRIPTION
guest_u is an SELinux User defined in the SELinux policy. SELinux users have default roles, guest_r. The default role has
a default type, guest_t, associated with it.
The SELinux user will usually login to a system with a context that looks like:
guest_u:guest_r:guest_t:s0
Linux users are automatically assigned an SELinux users at login. Login programs use the SELinux User to assign initial
context to the user's shell.
SELinux policy uses the context to control the user's access.
By default all users are assigned to the SELinux user via the __default__ flag
On Targeted policy systems the __default__ user is assigned to the unconfined_u SELinux user.
You can list all Linux User to SELinux user mapping using:
semanage login -l
If you wanted to change the default user mapping to use the guest_u user, you would execute:
semanage login -m -s guest_u __default__
If you want to map the one Linux user (joe) to the SELinux user guest, you would execute:
$ semanage login -a -s guest_u joe
USER DESCRIPTION
The SELinux user guest_u is defined in policy as a unprivileged user. SELinux prevents unprivileged users from doing admin‐
istration tasks without transitioning to a different role.
SUDO
X WINDOWS LOGIN
The SELinux user guest_u is not able to X Windows login.
NETWORK
The SELinux user guest_u is able to connect to the following tcp ports.
53
88,750,4444
9080
The SELinux user guest_u is able to connect to the following tcp ports.
53
88,750,4444
9080
BOOLEANS
SELinux policy is customizable based on least access required. guest policy is extremely flexible and has several booleans
that allow you to manipulate the policy and run guest with the tightest access possible.
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn
on the authlogin_nsswitch_use_ldap boolean. Disabled by default.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to deny user domains applications to map a memory region as both executable and writable, this is dangerous and
the executable should be reported in bugzilla, you must turn on the deny_execmem boolean. Enabled by default.
setsebool -P deny_execmem 1
If you want to deny any process from ptracing or debugging any other processes, you must turn on the deny_ptrace boolean.
Enabled by default.
setsebool -P deny_ptrace 1
If you want to allow all domains to use other domains file descriptors, you must turn on the domain_fd_use boolean. Enabled
by default.
setsebool -P domain_fd_use 1
If you want to allow all domains to have the kernel load modules, you must turn on the domain_kernel_load_modules boolean.
Disabled by default.
setsebool -P domain_kernel_load_modules 1
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 enable reading of urandom for all domains, you must turn on the global_ssp boolean. Disabled by default.
setsebool -P global_ssp 1
If you want to allow httpd cgi support, you must turn on the httpd_enable_cgi boolean. Disabled by default.
setsebool -P httpd_enable_cgi 1
If you want to unify HTTPD handling of all content files, you must turn on the httpd_unified boolean. Disabled by default.
setsebool -P httpd_unified 1
If you want to allow confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by
default.
setsebool -P kerberos_enabled 1
If you want to allow logging in and using the system from /dev/console, you must turn on the login_console_enabled boolean.
Enabled by default.
setsebool -P login_console_enabled 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
If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Disabled
by default.
setsebool -P nscd_use_shm 1
If you want to disallow programs, such as newrole, from transitioning to administrative user domains, you must turn on the
secure_mode boolean. Enabled by default.
setsebool -P secure_mode 1
If you want to allow unconfined executables to make their stack executable. This should never, ever be necessary. Probably
indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla, you must
turn on the selinuxuser_execstack boolean. Enabled by default.
setsebool -P selinuxuser_execstack 1
If you want to allow user to use ssh chroot environment, you must turn on the selinuxuser_use_ssh_chroot boolean. Disabled
by default.
setsebool -P selinuxuser_use_ssh_chroot 1
If you want to allow ssh logins as sysadm_r:sysadm_t, you must turn on the ssh_sysadm_login boolean. Disabled by default.
setsebool -P ssh_sysadm_login 1
If you want to support NFS home directories, you must turn on the use_nfs_home_dirs boolean. Disabled by default.
setsebool -P use_nfs_home_dirs 1
If you want to support SAMBA home directories, you must turn on the use_samba_home_dirs boolean. Disabled by default.
setsebool -P use_samba_home_dirs 1
If you want to allow the graphical login program to login directly as sysadm_r:sysadm_t, you must turn on the
xdm_sysadm_login boolean. Enabled by default.
setsebool -P xdm_sysadm_login 1
HOME_EXEC
The SELinux user guest_u is able execute home content files.
TRANSITIONS
Three things can happen when guest_t attempts to execute a program.
1. SELinux Policy can deny guest_t from executing the program.
2. SELinux Policy can allow guest_t to execute the program in the current user type.
Execute the following to see the types that the SELinux user guest_t can execute without transitioning:
search -A -s guest_t -c file -p execute_no_trans
3. SELinux can allow guest_t to execute the program and transition to a new type.
Execute the following to see the types that the SELinux user guest_t can execute and transition:
$ search -A -s guest_t -c process -p transition
MANAGED FILES
The SELinux process type guest_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.
anon_inodefs_t
auth_cache_t
/var/cache/coolkey(/.*)?
cifs_t
httpd_user_content_t
/home/[^/]*/((www)|(web)|(public_html))(/.+)?
httpd_user_htaccess_t
/home/[^/]*/((www)|(web)|(public_html))(/.*)?/.htaccess
httpd_user_ra_content_t
/home/[^/]*/((www)|(web)|(public_html))(/.*)?/logs(/.*)?
httpd_user_rw_content_t
httpd_user_script_exec_t
/home/[^/]*/((www)|(web)|(public_html))/cgi-bin(/.+)?
nfs_t
user_home_type
all user home files
user_tmp_type
all user tmp files
user_tmpfs_type
all user content in tmpfs file systems
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), guest(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8)
mgrepl@redhat.com guest guest_selinux(8)
staff_selinux(8) staff SELinux Policy documentation staff_selinux(8)
NAME
staff_u - Administrator's unprivileged user - Security Enhanced Linux Policy
DESCRIPTION
staff_u is an SELinux User defined in the SELinux policy. SELinux users have default roles, staff_r. The default role has
a default type, staff_t, associated with it.
The SELinux user will usually login to a system with a context that looks like:
staff_u:staff_r:staff_t:s0 - s0:c0.c1023
Linux users are automatically assigned an SELinux users at login. Login programs use the SELinux User to assign initial
context to the user's shell.
SELinux policy uses the context to control the user's access.
By default all users are assigned to the SELinux user via the __default__ flag
On Targeted policy systems the __default__ user is assigned to the unconfined_u SELinux user.
You can list all Linux User to SELinux user mapping using:
semanage login -l
If you wanted to change the default user mapping to use the staff_u user, you would execute:
semanage login -m -s staff_u __default__
If you want to map the one Linux user (joe) to the SELinux user staff, you would execute:
$ semanage login -a -s staff_u joe
USER DESCRIPTION
The SELinux user staff_u is defined in policy as a unprivileged user. SELinux prevents unprivileged users from doing admin‐
istration tasks without transitioning to a different role.
SUDO
The SELinux user staff can execute sudo.
You can set up sudo to allow staff to transition to an administrative domain:
Add one or more of the following record to sudoers using visudo.
USERNAME ALL=(ALL) ROLE=auditadm_r TYPE=auditadm_t COMMAND
sudo will run COMMAND as staff_u:auditadm_r:auditadm_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add staff_r to this list.
$ semanage user -m -R 'staff_r auditadm_r dbadm_r logadm_r secadm_r sysadm_r unconfined_r webadm_r' staff_u
For more details you can see semanage man page.
USERNAME ALL=(ALL) ROLE=dbadm_r TYPE=dbadm_t COMMAND
sudo will run COMMAND as staff_u:dbadm_r:dbadm_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add staff_r to this list.
$ semanage user -m -R 'staff_r auditadm_r dbadm_r logadm_r secadm_r sysadm_r unconfined_r webadm_r' staff_u
For more details you can see semanage man page.
USERNAME ALL=(ALL) ROLE=logadm_r TYPE=logadm_t COMMAND
sudo will run COMMAND as staff_u:logadm_r:logadm_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add staff_r to this list.
$ semanage user -m -R 'staff_r auditadm_r dbadm_r logadm_r secadm_r sysadm_r unconfined_r webadm_r' staff_u
For more details you can see semanage man page.
USERNAME ALL=(ALL) ROLE=secadm_r TYPE=secadm_t COMMAND
sudo will run COMMAND as staff_u:secadm_r:secadm_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add staff_r to this list.
$ semanage user -m -R 'staff_r auditadm_r dbadm_r logadm_r secadm_r sysadm_r unconfined_r webadm_r' staff_u
For more details you can see semanage man page.
USERNAME ALL=(ALL) ROLE=sysadm_r TYPE=sysadm_t COMMAND
sudo will run COMMAND as staff_u:sysadm_r:sysadm_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add staff_r to this list.
$ semanage user -m -R 'staff_r auditadm_r dbadm_r logadm_r secadm_r sysadm_r unconfined_r webadm_r' staff_u
For more details you can see semanage man page.
USERNAME ALL=(ALL) ROLE=unconfined_r TYPE=unconfined_t COMMAND
sudo will run COMMAND as staff_u:unconfined_r:unconfined_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add staff_r to this list.
$ semanage user -m -R 'staff_r auditadm_r dbadm_r logadm_r secadm_r sysadm_r unconfined_r webadm_r' staff_u
For more details you can see semanage man page.
USERNAME ALL=(ALL) ROLE=webadm_r TYPE=webadm_t COMMAND
sudo will run COMMAND as staff_u:webadm_r:webadm_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add staff_r to this list.
$ semanage user -m -R 'staff_r auditadm_r dbadm_r logadm_r secadm_r sysadm_r unconfined_r webadm_r' staff_u
For more details you can see semanage man page.
The SELinux type staff_t is not allowed to execute sudo.
X WINDOWS LOGIN
The SELinux user staff_u is able to X Windows login.
NETWORK
The SELinux user staff_u is able to listen on the following tcp ports.
6000-6020
The SELinux user staff_u is able to connect to the following tcp ports.
all ports
The SELinux user staff_u is able to listen on the following udp ports.
all ports with out defined types
32768-61000
The SELinux user staff_u is able to connect to the following tcp ports.
all ports
BOOLEANS
SELinux policy is customizable based on least access required. staff policy is extremely flexible and has several booleans
that allow you to manipulate the policy and run staff with the tightest access possible.
If you want to allow staff user to create and transition to svirt domains, you must turn on the staff_use_svirt boolean.
Disabled by default.
setsebool -P staff_use_svirt 1
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn
on the authlogin_nsswitch_use_ldap boolean. Disabled by default.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to deny user domains applications to map a memory region as both executable and writable, this is dangerous and
the executable should be reported in bugzilla, you must turn on the deny_execmem boolean. Enabled by default.
setsebool -P deny_execmem 1
If you want to deny any process from ptracing or debugging any other processes, you must turn on the deny_ptrace boolean.
Enabled by default.
setsebool -P deny_ptrace 1
If you want to allow all domains to use other domains file descriptors, you must turn on the domain_fd_use boolean. Enabled
by default.
setsebool -P domain_fd_use 1
If you want to allow all domains to have the kernel load modules, you must turn on the domain_kernel_load_modules boolean.
Disabled by default.
setsebool -P domain_kernel_load_modules 1
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 determine whether calling user domains can execute Git daemon in the git_session_t domain, you must turn on
the git_session_users boolean. Disabled by default.
setsebool -P git_session_users 1
If you want to enable reading of urandom for all domains, you must turn on the global_ssp boolean. Disabled by default.
setsebool -P global_ssp 1
If you want to allow httpd cgi support, you must turn on the httpd_enable_cgi boolean. Disabled by default.
setsebool -P httpd_enable_cgi 1
If you want to unify HTTPD handling of all content files, you must turn on the httpd_unified boolean. Disabled by default.
setsebool -P httpd_unified 1
If you want to allow confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by
default.
setsebool -P kerberos_enabled 1
If you want to allow logging in and using the system from /dev/console, you must turn on the login_console_enabled boolean.
Enabled by default.
setsebool -P login_console_enabled 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
If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Disabled
by default.
setsebool -P nscd_use_shm 1
If you want to determine whether calling user domains can execute Polipo daemon in the polipo_session_t domain, you must
turn on the polipo_session_users boolean. Disabled by default.
setsebool -P polipo_session_users 1
If you want to allow unprivileged users to execute DDL statement, you must turn on the postgresql_selinux_users_ddl bool‐
ean. Enabled by default.
setsebool -P postgresql_selinux_users_ddl 1
If you want to allow pppd to be run for a regular user, you must turn on the pppd_for_user boolean. Disabled by default.
setsebool -P pppd_for_user 1
If you want to disallow programs, such as newrole, from transitioning to administrative user domains, you must turn on the
secure_mode boolean. Enabled by default.
setsebool -P secure_mode 1
If you want to allow regular users direct dri device access, you must turn on the selinuxuser_direct_dri_enabled boolean.
Enabled by default.
setsebool -P selinuxuser_direct_dri_enabled 1
If you want to allow all unconfined executables to use libraries requiring text relocation that are not labeled tex‐
trel_shlib_t, you must turn on the selinuxuser_execmod boolean. Enabled by default.
setsebool -P selinuxuser_execmod 1
If you want to allow unconfined executables to make their stack executable. This should never, ever be necessary. Probably
indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla, you must
turn on the selinuxuser_execstack boolean. Enabled by default.
setsebool -P selinuxuser_execstack 1
If you want to allow users to connect to the local mysql server, you must turn on the selinuxuser_mysql_connect_enabled
boolean. Disabled by default.
setsebool -P selinuxuser_mysql_connect_enabled 1
If you want to allow users to connect to PostgreSQL, you must turn on the selinuxuser_postgresql_connect_enabled boolean.
Disabled by default.
setsebool -P selinuxuser_postgresql_connect_enabled 1
If you want to allow user to r/w files on filesystems that do not have extended attributes (FAT, CDROM, FLOPPY), you must
turn on the selinuxuser_rw_noexattrfile boolean. Enabled by default.
setsebool -P selinuxuser_rw_noexattrfile 1
If you want to allow user music sharing, you must turn on the selinuxuser_share_music boolean. Disabled by default.
setsebool -P selinuxuser_share_music 1
If you want to allow users to run TCP servers (bind to ports and accept connection from the same domain and outside users)
disabling this forces FTP passive mode and may change other protocols, you must turn on the selinuxuser_tcp_server boolean.
Disabled by default.
setsebool -P selinuxuser_tcp_server 1
If you want to allow user to use ssh chroot environment, you must turn on the selinuxuser_use_ssh_chroot boolean. Disabled
by default.
setsebool -P selinuxuser_use_ssh_chroot 1
If you want to allow ssh logins as sysadm_r:sysadm_t, you must turn on the ssh_sysadm_login boolean. Disabled by default.
setsebool -P ssh_sysadm_login 1
If you want to support NFS home directories, you must turn on the use_nfs_home_dirs boolean. Disabled by default.
setsebool -P use_nfs_home_dirs 1
If you want to support SAMBA home directories, you must turn on the use_samba_home_dirs boolean. Disabled by default.
setsebool -P use_samba_home_dirs 1
If you want to allow the graphical login program to login directly as sysadm_r:sysadm_t, you must turn on the
xdm_sysadm_login boolean. Enabled by default.
setsebool -P xdm_sysadm_login 1
If you want to allows clients to write to the X server shared memory segments, you must turn on the
xserver_clients_write_xshm boolean. Disabled by default.
setsebool -P xserver_clients_write_xshm 1
If you want to support X userspace object manager, you must turn on the xserver_object_manager boolean. Enabled by default.
setsebool -P xserver_object_manager 1
HOME_EXEC
The SELinux user staff_u is able execute home content files.
TRANSITIONS
Three things can happen when staff_t attempts to execute a program.
1. SELinux Policy can deny staff_t from executing the program.
2. SELinux Policy can allow staff_t to execute the program in the current user type.
Execute the following to see the types that the SELinux user staff_t can execute without transitioning:
search -A -s staff_t -c file -p execute_no_trans
3. SELinux can allow staff_t to execute the program and transition to a new type.
Execute the following to see the types that the SELinux user staff_t can execute and transition:
$ search -A -s staff_t -c process -p transition
MANAGED FILES
The SELinux process type staff_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.
anon_inodefs_t
auth_cache_t
/var/cache/coolkey(/.*)?
bluetooth_helper_tmp_t
bluetooth_helper_tmpfs_t
cgroup_t
/cgroup
/sys/fs/cgroup
chrome_sandbox_tmpfs_t
cifs_t
games_data_t
/var/games(/.*)?
/var/lib/games(/.*)?
git_user_content_t
/home/[^/]*/public_git(/.*)?
gpg_agent_tmp_t
/home/[^/]*/.gnupg/log-socket
httpd_user_content_t
/home/[^/]*/((www)|(web)|(public_html))(/.+)?
httpd_user_htaccess_t
/home/[^/]*/((www)|(web)|(public_html))(/.*)?/.htaccess
httpd_user_ra_content_t
/home/[^/]*/((www)|(web)|(public_html))(/.*)?/logs(/.*)?
httpd_user_rw_content_t
httpd_user_script_exec_t
/home/[^/]*/((www)|(web)|(public_html))/cgi-bin(/.+)?
iceauth_home_t
/root/.DCOP.*
/root/.ICEauthority.*
/home/[^/]*/.DCOP.*
/home/[^/]*/.ICEauthority.*
irc_home_t
/home/[^/]*/.irssi(/.*)?
/home/[^/]*/.ircmotd
mail_spool_t
/var/mail(/.*)?
/var/spool/imap(/.*)?
/var/spool/mail(/.*)?
mqueue_spool_t
/var/spool/(client)?mqueue(/.*)?
/var/spool/mqueue.in(/.*)?
nfsd_rw_t
noxattrfs
all files on file systems which do not support extended attributes
sandbox_file_t
sandbox_tmpfs_type
all sandbox content in tmpfs file systems
screen_home_t
/root/.screen(/.*)?
/home/[^/]*/.screen(/.*)?
/home/[^/]*/.screenrc
security_t
/selinux
systemd_passwd_var_run_t
/var/run/systemd/ask-password(/.*)?
/var/run/systemd/ask-password-block(/.*)?
usbfs_t
user_fonts_cache_t
/root/.fontconfig(/.*)?
/root/.fonts/auto(/.*)?
/root/.fonts.cache-.*
/home/[^/]*/.fontconfig(/.*)?
/home/[^/]*/.fonts/auto(/.*)?
/home/[^/]*/.fonts.cache-.*
user_fonts_t
/root/.fonts(/.*)?
/tmp/.font-unix(/.*)?
/home/[^/]*/.fonts(/.*)?
user_home_type
all user home files
user_tmp_type
all user tmp files
user_tmpfs_type
all user content in tmpfs file systems
virt_image_type
all virtual image files
xauth_home_t
/root/.xauth.*
/root/.Xauth.*
/root/.serverauth.*
/root/.Xauthority.*
/var/lib/pqsql/.xauth.*
/var/lib/pqsql/.Xauthority.*
/var/lib/nxserver/home/.xauth.*
/var/lib/nxserver/home/.Xauthority.*
/home/[^/]*/.xauth.*
/home/[^/]*/.Xauth.*
/home/[^/]*/.serverauth.*
/home/[^/]*/.Xauthority.*
xdm_tmp_t
/tmp/.X11-unix(/.*)?
/tmp/.ICE-unix(/.*)?
/tmp/.X0-lock
xserver_tmpfs_t
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), staff(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8), staff_consolehelper_selinux(8),
staff_consolehelper_selinux(8), staff_dbusd_selinux(8), staff_dbusd_selinux(8), staff_gkeyringd_selinux(8),
staff_gkeyringd_selinux(8), staff_screen_selinux(8), staff_screen_selinux(8), staff_seunshare_selinux(8), staff_seun‐
share_selinux(8), staff_ssh_agent_selinux(8), staff_ssh_agent_selinux(8), staff_sudo_selinux(8), staff_sudo_selinux(8),
staff_wine_selinux(8), staff_wine_selinux(8)
mgrepl@redhat.com staff staff_selinux(8)
sysadm_selinux(8) sysadm SELinux Policy documentation sysadm_selinux(8)
NAME
sysadm_u - General system administration role - Security Enhanced Linux Policy
DESCRIPTION
sysadm_u is an SELinux User defined in the SELinux policy. SELinux users have default roles, sysadm_r. The default role
has a default type, sysadm_t, associated with it.
The SELinux user will usually login to a system with a context that looks like:
sysadm_u:sysadm_r:sysadm_t:s0 - s0:c0.c1023
Linux users are automatically assigned an SELinux users at login. Login programs use the SELinux User to assign initial
context to the user's shell.
SELinux policy uses the context to control the user's access.
By default all users are assigned to the SELinux user via the __default__ flag
On Targeted policy systems the __default__ user is assigned to the unconfined_u SELinux user.
You can list all Linux User to SELinux user mapping using:
semanage login -l
If you wanted to change the default user mapping to use the sysadm_u user, you would execute:
semanage login -m -s sysadm_u __default__
If you want to map the one Linux user (joe) to the SELinux user sysadm, you would execute:
$ semanage login -a -s sysadm_u joe
USER DESCRIPTION
The SELinux user sysadm_u is an admin user. It means that a mapped Linux user to this SELinux user is intended for adminis‐
trative actions. Usually this is assigned to a root Linux user.
SUDO
The SELinux user sysadm can execute sudo.
You can set up sudo to allow sysadm to transition to an administrative domain:
Add one or more of the following record to sudoers using visudo.
USERNAME ALL=(ALL) ROLE=auditadm_r TYPE=auditadm_t COMMAND
sudo will run COMMAND as sysadm_u:auditadm_r:auditadm_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add sysadm_r to this list.
$ semanage user -m -R 'sysadm_r auditadm_r secadm_r staff_r user_r' sysadm_u
For more details you can see semanage man page.
USERNAME ALL=(ALL) ROLE=secadm_r TYPE=secadm_t COMMAND
sudo will run COMMAND as sysadm_u:secadm_r:secadm_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add sysadm_r to this list.
$ semanage user -m -R 'sysadm_r auditadm_r secadm_r staff_r user_r' sysadm_u
For more details you can see semanage man page.
USERNAME ALL=(ALL) ROLE=staff_r TYPE=staff_t COMMAND
sudo will run COMMAND as sysadm_u:staff_r:staff_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add sysadm_r to this list.
$ semanage user -m -R 'sysadm_r auditadm_r secadm_r staff_r user_r' sysadm_u
For more details you can see semanage man page.
USERNAME ALL=(ALL) ROLE=user_r TYPE=user_t COMMAND
sudo will run COMMAND as sysadm_u:user_r:user_t:LEVEL
You might also need to add one or more of these new roles to your SELinux user record.
List the SELinux roles your SELinux user can reach by executing:
$ semanage user -l |grep selinux_name
Modify the roles list and add sysadm_r to this list.
$ semanage user -m -R 'sysadm_r auditadm_r secadm_r staff_r user_r' sysadm_u
For more details you can see semanage man page.
The SELinux type sysadm_t is not allowed to execute sudo.
X WINDOWS LOGIN
The SELinux user sysadm_u is able to X Windows login.
NETWORK
The SELinux user sysadm_u is able to listen on the following tcp ports.
32768-61000
all ports with out defined types
The SELinux user sysadm_u is able to connect to the following tcp ports.
all ports
The SELinux user sysadm_u is able to listen on the following udp ports.
all ports with out defined types
32768-61000
123
The SELinux user sysadm_u is able to connect to the following tcp ports.
all ports
BOOLEANS
SELinux policy is customizable based on least access required. sysadm policy is extremely flexible and has several bool‐
eans that allow you to manipulate the policy and run sysadm with the tightest access possible.
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn
on the authlogin_nsswitch_use_ldap boolean. Disabled by default.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to deny user domains applications to map a memory region as both executable and writable, this is dangerous and
the executable should be reported in bugzilla, you must turn on the deny_execmem boolean. Enabled by default.
setsebool -P deny_execmem 1
If you want to deny any process from ptracing or debugging any other processes, you must turn on the deny_ptrace boolean.
Enabled by default.
setsebool -P deny_ptrace 1
If you want to allow all domains to use other domains file descriptors, you must turn on the domain_fd_use boolean. Enabled
by default.
setsebool -P domain_fd_use 1
If you want to allow all domains to have the kernel load modules, you must turn on the domain_kernel_load_modules boolean.
Disabled by default.
setsebool -P domain_kernel_load_modules 1
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 determine whether calling user domains can execute Git daemon in the git_session_t domain, you must turn on
the git_session_users boolean. Disabled by default.
setsebool -P git_session_users 1
If you want to enable reading of urandom for all domains, you must turn on the global_ssp boolean. Disabled by default.
setsebool -P global_ssp 1
If you want to allow confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by
default.
setsebool -P kerberos_enabled 1
If you want to allow logging in and using the system from /dev/console, you must turn on the login_console_enabled boolean.
Enabled by default.
setsebool -P login_console_enabled 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
If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Disabled
by default.
setsebool -P nscd_use_shm 1
If you want to determine whether calling user domains can execute Polipo daemon in the polipo_session_t domain, you must
turn on the polipo_session_users boolean. Disabled by default.
setsebool -P polipo_session_users 1
If you want to allow database admins to execute DML statement, you must turn on the postgresql_selinux_unconfined_dbadm
boolean. Enabled by default.
setsebool -P postgresql_selinux_unconfined_dbadm 1
If you want to disallow programs, such as newrole, from transitioning to administrative user domains, you must turn on the
secure_mode boolean. Enabled by default.
setsebool -P secure_mode 1
If you want to boolean to determine whether the system permits loading policy, setting enforcing mode, and changing boolean
values. Set this to true and you have to reboot to set it back, you must turn on the secure_mode_policyload boolean.
Enabled by default.
setsebool -P secure_mode_policyload 1
If you want to allow regular users direct dri device access, you must turn on the selinuxuser_direct_dri_enabled boolean.
Enabled by default.
setsebool -P selinuxuser_direct_dri_enabled 1
If you want to allow unconfined executables to make their stack executable. This should never, ever be necessary. Probably
indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla, you must
turn on the selinuxuser_execstack boolean. Enabled by default.
setsebool -P selinuxuser_execstack 1
If you want to allow users to connect to the local mysql server, you must turn on the selinuxuser_mysql_connect_enabled
boolean. Disabled by default.
setsebool -P selinuxuser_mysql_connect_enabled 1
If you want to allow users to connect to PostgreSQL, you must turn on the selinuxuser_postgresql_connect_enabled boolean.
Disabled by default.
setsebool -P selinuxuser_postgresql_connect_enabled 1
If you want to allow user to r/w files on filesystems that do not have extended attributes (FAT, CDROM, FLOPPY), you must
turn on the selinuxuser_rw_noexattrfile boolean. Disabled by default.
setsebool -P selinuxuser_rw_noexattrfile 1
If you want to allow users to run TCP servers (bind to ports and accept connection from the same domain and outside users)
disabling this forces FTP passive mode and may change other protocols, you must turn on the selinuxuser_tcp_server boolean.
Disabled by default.
setsebool -P selinuxuser_tcp_server 1
If you want to allow user to use ssh chroot environment, you must turn on the selinuxuser_use_ssh_chroot boolean. Disabled
by default.
setsebool -P selinuxuser_use_ssh_chroot 1
If you want to allow ssh logins as sysadm_r:sysadm_t, you must turn on the ssh_sysadm_login boolean. Disabled by default.
setsebool -P ssh_sysadm_login 1
If you want to support NFS home directories, you must turn on the use_nfs_home_dirs boolean. Disabled by default.
setsebool -P use_nfs_home_dirs 1
If you want to support SAMBA home directories, you must turn on the use_samba_home_dirs boolean. Disabled by default.
setsebool -P use_samba_home_dirs 1
If you want to allow the graphical login program to login directly as sysadm_r:sysadm_t, you must turn on the
xdm_sysadm_login boolean. Disabled by default.
setsebool -P xdm_sysadm_login 1
If you want to allows clients to write to the X server shared memory segments, you must turn on the
xserver_clients_write_xshm boolean. Disabled by default.
setsebool -P xserver_clients_write_xshm 1
If you want to support X userspace object manager, you must turn on the xserver_object_manager boolean. Enabled by default.
setsebool -P xserver_object_manager 1
HOME_EXEC
The SELinux user sysadm_u is able execute home content files.
TRANSITIONS
Three things can happen when sysadm_t attempts to execute a program.
1. SELinux Policy can deny sysadm_t from executing the program.
2. SELinux Policy can allow sysadm_t to execute the program in the current user type.
Execute the following to see the types that the SELinux user sysadm_t can execute without transitioning:
search -A -s sysadm_t -c file -p execute_no_trans
3. SELinux can allow sysadm_t to execute the program and transition to a new type.
Execute the following to see the types that the SELinux user sysadm_t can execute and transition:
$ search -A -s sysadm_t -c process -p transition
MANAGED FILES
The SELinux process type sysadm_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.
auditd_etc_t
/etc/audit(/.*)?
auditd_log_t
/var/log/audit(/.*)?
/var/log/audit.log
boolean_type
cifs_t
default_context_t
/etc/selinux/([^/]*/)?contexts(/.*)?
/root/.default_contexts
etc_runtime_t
/[^/]+
/etc/mtab.*
/etc/blkid(/.*)?
/etc/nologin.*
/etc/.fstab.hal..+
/halt
/fastboot
/poweroff
/etc/cmtab
/forcefsck
/.autofsck
/.suspended
/fsckoptions
/.autorelabel
/etc/securetty
/etc/nohotplug
/etc/killpower
/etc/ioctl.save
/etc/fstab.REVOKE
/etc/network/ifstate
/etc/sysconfig/hwconf
/etc/ptal/ptal-printd-like
/etc/sysconfig/iptables.save
/etc/xorg.conf.d/00-system-setup-keyboard.conf
/etc/X11/xorg.conf.d/00-system-setup-keyboard.conf
file_context_t
/etc/selinux/([^/]*/)?contexts/files(/.*)?
git_user_content_t
/home/[^/]*/public_git(/.*)?
iceauth_home_t
/root/.DCOP.*
/root/.ICEauthority.*
/home/[^/]*/.DCOP.*
/home/[^/]*/.ICEauthority.*
irc_home_t
/home/[^/]*/.irssi(/.*)?
/home/[^/]*/.ircmotd
krb5_host_rcache_t
/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
krb5_keytab_t
/etc/krb5.keytab
/etc/krb5kdc/kadm5.keytab
/var/kerberos/krb5kdc/kadm5.keytab
non_security_file_type
noxattrfs
all files on file systems which do not support extended attributes
postfix_spool_type
screen_home_t
/root/.screen(/.*)?
/home/[^/]*/.screen(/.*)?
/home/[^/]*/.screenrc
selinux_config_t
/etc/selinux(/.*)?
/etc/selinux/([^/]*/)?seusers
/etc/selinux/([^/]*/)?users(/.*)?
/etc/selinux/([^/]*/)?setrans.conf
/var/lib/sepolgen(/.*)?
selinux_login_config_t
/etc/selinux/([^/]*/)?logins(/.*)?
semanage_store_t
/etc/selinux/([^/]*/)?policy(/.*)?
/etc/selinux/([^/]*/)?modules/(active|tmp|previous)(/.*)?
/etc/share/selinux/mls(/.*)?
/etc/share/selinux/targeted(/.*)?
sysctl_type
systemd_passwd_var_run_t
/var/run/systemd/ask-password(/.*)?
/var/run/systemd/ask-password-block(/.*)?
systemd_unit_file_type
usbfs_t
user_fonts_cache_t
/root/.fontconfig(/.*)?
/root/.fonts/auto(/.*)?
/root/.fonts.cache-.*
/home/[^/]*/.fontconfig(/.*)?
/home/[^/]*/.fonts/auto(/.*)?
/home/[^/]*/.fonts.cache-.*
user_fonts_t
/root/.fonts(/.*)?
/tmp/.font-unix(/.*)?
/home/[^/]*/.fonts(/.*)?
user_home_t
/home/[^/]*/.+
user_home_type
all user home files
user_tmp_type
all user tmp files
user_tmpfs_type
all user content in tmpfs file systems
vmware_conf_t
/home/[^/]*/.vmware[^/]*/.*.cfg
vmware_tmp_t
vmware_tmpfs_t
xauth_home_t
/root/.xauth.*
/root/.Xauth.*
/root/.serverauth.*
/root/.Xauthority.*
/var/lib/pqsql/.xauth.*
/var/lib/pqsql/.Xauthority.*
/var/lib/nxserver/home/.xauth.*
/var/lib/nxserver/home/.Xauthority.*
/home/[^/]*/.xauth.*
/home/[^/]*/.Xauth.*
/home/[^/]*/.serverauth.*
/home/[^/]*/.Xauthority.*
xserver_tmpfs_t
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), sysadm(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8), sysadm_dbusd_selinux(8),
sysadm_dbusd_selinux(8), sysadm_passwd_selinux(8), sysadm_passwd_selinux(8), sysadm_screen_selinux(8),
sysadm_screen_selinux(8), sysadm_seunshare_selinux(8), sysadm_seunshare_selinux(8), sysadm_ssh_agent_selinux(8),
sysadm_ssh_agent_selinux(8), sysadm_su_selinux(8), sysadm_su_selinux(8), sysadm_sudo_selinux(8), sysadm_sudo_selinux(8)
mgrepl@redhat.com sysadm sysadm_selinux(8)
user_selinux(8) user SELinux Policy documentation user_selinux(8)
NAME
user_u - Generic unprivileged user - Security Enhanced Linux Policy
DESCRIPTION
user_u is an SELinux User defined in the SELinux policy. SELinux users have default roles, user_r. The default role has a
default type, user_t, associated with it.
The SELinux user will usually login to a system with a context that looks like:
user_u:user_r:user_t:s0
Linux users are automatically assigned an SELinux users at login. Login programs use the SELinux User to assign initial
context to the user's shell.
SELinux policy uses the context to control the user's access.
By default all users are assigned to the SELinux user via the __default__ flag
On Targeted policy systems the __default__ user is assigned to the unconfined_u SELinux user.
You can list all Linux User to SELinux user mapping using:
semanage login -l
If you wanted to change the default user mapping to use the user_u user, you would execute:
semanage login -m -s user_u __default__
If you want to map the one Linux user (joe) to the SELinux user user, you would execute:
$ semanage login -a -s user_u joe
USER DESCRIPTION
The SELinux user user_u is defined in policy as a unprivileged user. SELinux prevents unprivileged users from doing admin‐
istration tasks without transitioning to a different role.
SUDO
X WINDOWS LOGIN
The SELinux user user_u is able to X Windows login.
NETWORK
The SELinux user user_u is able to listen on the following tcp ports.
6000-6020
The SELinux user user_u is able to connect to the following tcp ports.
all ports
The SELinux user user_u is able to listen on the following udp ports.
all ports with out defined types
32768-61000
The SELinux user user_u is able to connect to the following tcp ports.
all ports
BOOLEANS
SELinux policy is customizable based on least access required. user policy is extremely flexible and has several booleans
that allow you to manipulate the policy and run user with the tightest access possible.
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn
on the authlogin_nsswitch_use_ldap boolean. Disabled by default.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to deny user domains applications to map a memory region as both executable and writable, this is dangerous and
the executable should be reported in bugzilla, you must turn on the deny_execmem boolean. Enabled by default.
setsebool -P deny_execmem 1
If you want to deny any process from ptracing or debugging any other processes, you must turn on the deny_ptrace boolean.
Enabled by default.
setsebool -P deny_ptrace 1
If you want to allow all domains to use other domains file descriptors, you must turn on the domain_fd_use boolean. Enabled
by default.
setsebool -P domain_fd_use 1
If you want to allow all domains to have the kernel load modules, you must turn on the domain_kernel_load_modules boolean.
Disabled by default.
setsebool -P domain_kernel_load_modules 1
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 determine whether calling user domains can execute Git daemon in the git_session_t domain, you must turn on
the git_session_users boolean. Enabled by default.
setsebool -P git_session_users 1
If you want to enable reading of urandom for all domains, you must turn on the global_ssp boolean. Disabled by default.
setsebool -P global_ssp 1
If you want to allow httpd cgi support, you must turn on the httpd_enable_cgi boolean. Disabled by default.
setsebool -P httpd_enable_cgi 1
If you want to unify HTTPD handling of all content files, you must turn on the httpd_unified boolean. Disabled by default.
setsebool -P httpd_unified 1
If you want to allow confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by
default.
setsebool -P kerberos_enabled 1
If you want to allow logging in and using the system from /dev/console, you must turn on the login_console_enabled boolean.
Enabled by default.
setsebool -P login_console_enabled 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
If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Disabled
by default.
setsebool -P nscd_use_shm 1
If you want to determine whether calling user domains can execute Polipo daemon in the polipo_session_t domain, you must
turn on the polipo_session_users boolean. Disabled by default.
setsebool -P polipo_session_users 1
If you want to allow pppd to be run for a regular user, you must turn on the pppd_for_user boolean. Disabled by default.
setsebool -P pppd_for_user 1
If you want to disallow programs, such as newrole, from transitioning to administrative user domains, you must turn on the
secure_mode boolean. Enabled by default.
setsebool -P secure_mode 1
If you want to allow regular users direct dri device access, you must turn on the selinuxuser_direct_dri_enabled boolean.
Enabled by default.
setsebool -P selinuxuser_direct_dri_enabled 1
If you want to allow all unconfined executables to use libraries requiring text relocation that are not labeled tex‐
trel_shlib_t, you must turn on the selinuxuser_execmod boolean. Enabled by default.
setsebool -P selinuxuser_execmod 1
If you want to allow unconfined executables to make their stack executable. This should never, ever be necessary. Probably
indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla, you must
turn on the selinuxuser_execstack boolean. Enabled by default.
setsebool -P selinuxuser_execstack 1
If you want to allow users to connect to the local mysql server, you must turn on the selinuxuser_mysql_connect_enabled
boolean. Disabled by default.
setsebool -P selinuxuser_mysql_connect_enabled 1
If you want to allow confined users the ability to execute the ping and traceroute commands, you must turn on the selin‐
uxuser_ping boolean. Enabled by default.
setsebool -P selinuxuser_ping 1
If you want to allow users to connect to PostgreSQL, you must turn on the selinuxuser_postgresql_connect_enabled boolean.
Disabled by default.
setsebool -P selinuxuser_postgresql_connect_enabled 1
If you want to allow user to r/w files on filesystems that do not have extended attributes (FAT, CDROM, FLOPPY), you must
turn on the selinuxuser_rw_noexattrfile boolean. Enabled by default.
setsebool -P selinuxuser_rw_noexattrfile 1
If you want to allow user music sharing, you must turn on the selinuxuser_share_music boolean. Disabled by default.
setsebool -P selinuxuser_share_music 1
If you want to allow users to run TCP servers (bind to ports and accept connection from the same domain and outside users)
disabling this forces FTP passive mode and may change other protocols, you must turn on the selinuxuser_tcp_server boolean.
Disabled by default.
setsebool -P selinuxuser_tcp_server 1
If you want to allow user to use ssh chroot environment, you must turn on the selinuxuser_use_ssh_chroot boolean. Disabled
by default.
setsebool -P selinuxuser_use_ssh_chroot 1
If you want to allow ssh logins as sysadm_r:sysadm_t, you must turn on the ssh_sysadm_login boolean. Disabled by default.
setsebool -P ssh_sysadm_login 1
If you want to allow unprivledged user to create and transition to svirt domains, you must turn on the unprivuser_use_svirt
boolean. Disabled by default.
setsebool -P unprivuser_use_svirt 1
If you want to support NFS home directories, you must turn on the use_nfs_home_dirs boolean. Disabled by default.
setsebool -P use_nfs_home_dirs 1
If you want to support SAMBA home directories, you must turn on the use_samba_home_dirs boolean. Disabled by default.
setsebool -P use_samba_home_dirs 1
If you want to allow the graphical login program to login directly as sysadm_r:sysadm_t, you must turn on the
xdm_sysadm_login boolean. Enabled by default.
setsebool -P xdm_sysadm_login 1
If you want to allows clients to write to the X server shared memory segments, you must turn on the
xserver_clients_write_xshm boolean. Disabled by default.
setsebool -P xserver_clients_write_xshm 1
If you want to support X userspace object manager, you must turn on the xserver_object_manager boolean. Enabled by default.
setsebool -P xserver_object_manager 1
HOME_EXEC
The SELinux user user_u is able execute home content files.
TRANSITIONS
Three things can happen when user_t attempts to execute a program.
1. SELinux Policy can deny user_t from executing the program.
2. SELinux Policy can allow user_t to execute the program in the current user type.
Execute the following to see the types that the SELinux user user_t can execute without transitioning:
search -A -s user_t -c file -p execute_no_trans
3. SELinux can allow user_t to execute the program and transition to a new type.
Execute the following to see the types that the SELinux user user_t can execute and transition:
$ search -A -s user_t -c process -p transition
MANAGED FILES
The SELinux process type user_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.
anon_inodefs_t
auth_cache_t
/var/cache/coolkey(/.*)?
bluetooth_helper_tmp_t
bluetooth_helper_tmpfs_t
cgroup_t
/cgroup
/sys/fs/cgroup
chrome_sandbox_tmpfs_t
cifs_t
games_data_t
/var/games(/.*)?
/var/lib/games(/.*)?
git_user_content_t
/home/[^/]*/public_git(/.*)?
gpg_agent_tmp_t
/home/[^/]*/.gnupg/log-socket
httpd_user_content_t
/home/[^/]*/((www)|(web)|(public_html))(/.+)?
httpd_user_htaccess_t
/home/[^/]*/((www)|(web)|(public_html))(/.*)?/.htaccess
httpd_user_ra_content_t
/home/[^/]*/((www)|(web)|(public_html))(/.*)?/logs(/.*)?
httpd_user_rw_content_t
httpd_user_script_exec_t
/home/[^/]*/((www)|(web)|(public_html))/cgi-bin(/.+)?
iceauth_home_t
/root/.DCOP.*
/root/.ICEauthority.*
/home/[^/]*/.DCOP.*
/home/[^/]*/.ICEauthority.*
irc_home_t
/home/[^/]*/.irssi(/.*)?
/home/[^/]*/.ircmotd
mail_spool_t
/var/mail(/.*)?
/var/spool/imap(/.*)?
/var/spool/mail(/.*)?
mqueue_spool_t
/var/spool/(client)?mqueue(/.*)?
/var/spool/mqueue.in(/.*)?
nfsd_rw_t
noxattrfs
all files on file systems which do not support extended attributes
sandbox_file_t
sandbox_tmpfs_type
all sandbox content in tmpfs file systems
screen_home_t
/root/.screen(/.*)?
/home/[^/]*/.screen(/.*)?
/home/[^/]*/.screenrc
security_t
/selinux
usbfs_t
user_fonts_cache_t
/root/.fontconfig(/.*)?
/root/.fonts/auto(/.*)?
/root/.fonts.cache-.*
/home/[^/]*/.fontconfig(/.*)?
/home/[^/]*/.fonts/auto(/.*)?
/home/[^/]*/.fonts.cache-.*
user_fonts_t
/root/.fonts(/.*)?
/tmp/.font-unix(/.*)?
/home/[^/]*/.fonts(/.*)?
user_home_type
all user home files
user_tmp_type
all user tmp files
user_tmpfs_type
all user content in tmpfs file systems
virt_image_type
all virtual image files
xauth_home_t
/root/.xauth.*
/root/.Xauth.*
/root/.serverauth.*
/root/.Xauthority.*
/var/lib/pqsql/.xauth.*
/var/lib/pqsql/.Xauthority.*
/var/lib/nxserver/home/.xauth.*
/var/lib/nxserver/home/.Xauthority.*
/home/[^/]*/.xauth.*
/home/[^/]*/.Xauth.*
/home/[^/]*/.serverauth.*
/home/[^/]*/.Xauthority.*
xdm_tmp_t
/tmp/.X11-unix(/.*)?
/tmp/.ICE-unix(/.*)?
/tmp/.X0-lock
xserver_tmpfs_t
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), user(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8), user_dbusd_selinux(8),
user_dbusd_selinux(8), user_gkeyringd_selinux(8), user_gkeyringd_selinux(8), user_mail_selinux(8), user_mail_selinux(8),
user_screen_selinux(8), user_screen_selinux(8), user_seunshare_selinux(8), user_seunshare_selinux(8),
user_ssh_agent_selinux(8), user_ssh_agent_selinux(8), user_wine_selinux(8), user_wine_selinux(8)
mgrepl@redhat.com user user_selinux(8)
xguest_selinux(8) xguest SELinux Policy documentation xguest_selinux(8)
NAME
xguest_u - Least privledge xwindows user role. - Security Enhanced Linux Policy
DESCRIPTION
xguest_u is an SELinux User defined in the SELinux policy. SELinux users have default roles, xguest_r. The default role
has a default type, xguest_t, associated with it.
The SELinux user will usually login to a system with a context that looks like:
xguest_u:xguest_r:xguest_t:s0
Linux users are automatically assigned an SELinux users at login. Login programs use the SELinux User to assign initial
context to the user's shell.
SELinux policy uses the context to control the user's access.
By default all users are assigned to the SELinux user via the __default__ flag
On Targeted policy systems the __default__ user is assigned to the unconfined_u SELinux user.
You can list all Linux User to SELinux user mapping using:
semanage login -l
If you wanted to change the default user mapping to use the xguest_u user, you would execute:
semanage login -m -s xguest_u __default__
If you want to map the one Linux user (joe) to the SELinux user xguest, you would execute:
$ semanage login -a -s xguest_u joe
USER DESCRIPTION
The SELinux user xguest_u is defined in policy as a unprivileged user. SELinux prevents unprivileged users from doing
administration tasks without transitioning to a different role.
SUDO
X WINDOWS LOGIN
The SELinux user xguest_u is able to X Windows login.
NETWORK
The SELinux user xguest_u is able to connect to the following tcp ports.
53
631,8610-8614
8081
all ports with out defined types
9080
21,990
8036
8080,8118,8123,10001-10010
80,81,443,488,8008,8009,8443,9000
88,750,4444
5001
3128,3401,4827
32768-61000
4713
843,1935
8000,9433,16001
The SELinux user xguest_u is able to connect to the following tcp ports.
53
631,8610-8614
8081
all ports with out defined types
9080
21,990
8036
8080,8118,8123,10001-10010
80,81,443,488,8008,8009,8443,9000
88,750,4444
5001
3128,3401,4827
32768-61000
4713
843,1935
8000,9433,16001
BOOLEANS
SELinux policy is customizable based on least access required. xguest policy is extremely flexible and has several bool‐
eans that allow you to manipulate the policy and run xguest with the tightest access possible.
If you want to allow xguest users to configure Network Manager and connect to apache ports, you must turn on the
xguest_connect_network boolean. Enabled by default.
setsebool -P xguest_connect_network 1
If you want to allow xguest users to mount removable media, you must turn on the xguest_mount_media boolean. Enabled by
default.
setsebool -P xguest_mount_media 1
If you want to allow xguest to use blue tooth devices, you must turn on the xguest_use_bluetooth boolean. Enabled by
default.
setsebool -P xguest_use_bluetooth 1
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn
on the authlogin_nsswitch_use_ldap boolean. Disabled by default.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to deny user domains applications to map a memory region as both executable and writable, this is dangerous and
the executable should be reported in bugzilla, you must turn on the deny_execmem boolean. Enabled by default.
setsebool -P deny_execmem 1
If you want to deny any process from ptracing or debugging any other processes, you must turn on the deny_ptrace boolean.
Enabled by default.
setsebool -P deny_ptrace 1
If you want to allow all domains to use other domains file descriptors, you must turn on the domain_fd_use boolean. Enabled
by default.
setsebool -P domain_fd_use 1
If you want to allow all domains to have the kernel load modules, you must turn on the domain_kernel_load_modules boolean.
Disabled by default.
setsebool -P domain_kernel_load_modules 1
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 enable reading of urandom for all domains, you must turn on the global_ssp boolean. Disabled by default.
setsebool -P global_ssp 1
If you want to allow httpd cgi support, you must turn on the httpd_enable_cgi boolean. Enabled by default.
setsebool -P httpd_enable_cgi 1
If you want to unify HTTPD handling of all content files, you must turn on the httpd_unified boolean. Disabled by default.
setsebool -P httpd_unified 1
If you want to allow confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by
default.
setsebool -P kerberos_enabled 1
If you want to allow logging in and using the system from /dev/console, you must turn on the login_console_enabled boolean.
Enabled by default.
setsebool -P login_console_enabled 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
If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Disabled
by default.
setsebool -P nscd_use_shm 1
If you want to disallow programs, such as newrole, from transitioning to administrative user domains, you must turn on the
secure_mode boolean. Enabled by default.
setsebool -P secure_mode 1
If you want to allow regular users direct dri device access, you must turn on the selinuxuser_direct_dri_enabled boolean.
Enabled by default.
setsebool -P selinuxuser_direct_dri_enabled 1
If you want to allow unconfined executables to make their stack executable. This should never, ever be necessary. Probably
indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla, you must
turn on the selinuxuser_execstack boolean. Enabled by default.
setsebool -P selinuxuser_execstack 1
If you want to allow user to r/w files on filesystems that do not have extended attributes (FAT, CDROM, FLOPPY), you must
turn on the selinuxuser_rw_noexattrfile boolean. Enabled by default.
setsebool -P selinuxuser_rw_noexattrfile 1
If you want to allow user to use ssh chroot environment, you must turn on the selinuxuser_use_ssh_chroot boolean. Disabled
by default.
setsebool -P selinuxuser_use_ssh_chroot 1
If you want to allow ssh logins as sysadm_r:sysadm_t, you must turn on the ssh_sysadm_login boolean. Disabled by default.
setsebool -P ssh_sysadm_login 1
If you want to support NFS home directories, you must turn on the use_nfs_home_dirs boolean. Disabled by default.
setsebool -P use_nfs_home_dirs 1
If you want to support SAMBA home directories, you must turn on the use_samba_home_dirs boolean. Disabled by default.
setsebool -P use_samba_home_dirs 1
If you want to allow the graphical login program to login directly as sysadm_r:sysadm_t, you must turn on the
xdm_sysadm_login boolean. Enabled by default.
setsebool -P xdm_sysadm_login 1
If you want to allows clients to write to the X server shared memory segments, you must turn on the
xserver_clients_write_xshm boolean. Disabled by default.
setsebool -P xserver_clients_write_xshm 1
If you want to support X userspace object manager, you must turn on the xserver_object_manager boolean. Enabled by default.
setsebool -P xserver_object_manager 1
HOME_EXEC
The SELinux user xguest_u is able execute home content files.
TRANSITIONS
Three things can happen when xguest_t attempts to execute a program.
1. SELinux Policy can deny xguest_t from executing the program.
2. SELinux Policy can allow xguest_t to execute the program in the current user type.
Execute the following to see the types that the SELinux user xguest_t can execute without transitioning:
search -A -s xguest_t -c file -p execute_no_trans
3. SELinux can allow xguest_t to execute the program and transition to a new type.
Execute the following to see the types that the SELinux user xguest_t can execute and transition:
$ search -A -s xguest_t -c process -p transition
MANAGED FILES
The SELinux process type xguest_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.
anon_inodefs_t
auth_cache_t
/var/cache/coolkey(/.*)?
chrome_sandbox_tmpfs_t
cifs_t
httpd_user_content_t
/home/[^/]*/((www)|(web)|(public_html))(/.+)?
httpd_user_htaccess_t
/home/[^/]*/((www)|(web)|(public_html))(/.*)?/.htaccess
httpd_user_ra_content_t
/home/[^/]*/((www)|(web)|(public_html))(/.*)?/logs(/.*)?
httpd_user_rw_content_t
httpd_user_script_exec_t
/home/[^/]*/((www)|(web)|(public_html))/cgi-bin(/.+)?
noxattrfs
all files on file systems which do not support extended attributes
usbfs_t
user_fonts_cache_t
/root/.fontconfig(/.*)?
/root/.fonts/auto(/.*)?
/root/.fonts.cache-.*
/home/[^/]*/.fontconfig(/.*)?
/home/[^/]*/.fonts/auto(/.*)?
/home/[^/]*/.fonts.cache-.*
user_home_type
all user home files
user_tmp_type
all user tmp files
user_tmpfs_type
all user content in tmpfs file systems
xdm_tmp_t
/tmp/.X11-unix(/.*)?
/tmp/.ICE-unix(/.*)?
/tmp/.X0-lock
xserver_tmpfs_t
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), xguest(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8), xguest_dbusd_selinux(8),
xguest_dbusd_selinux(8), xguest_gkeyringd_selinux(8), xguest_gkeyringd_selinux(8)
mgrepl@redhat.com xguest xguest_selinux(8)
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