krb5kdc_selinux(8)					      SELinux Policy krb5kdc						krb5kdc_selinux(8)

NAME

       krb5kdc_selinux - Security Enhanced Linux Policy for the krb5kdc processes

DESCRIPTION

       Security-Enhanced Linux secures the krb5kdc processes via flexible mandatory access control.

       The  krb5kdc  processes execute with the krb5kdc_t SELinux type. You can check if you have these processes running by executing the ps com-
       mand with the -Z qualifier.

       For example:

       ps -eZ | grep krb5kdc_t

ENTRYPOINTS

       The krb5kdc_t SELinux type can be entered via the krb5kdc_exec_t file type.

       The default entrypoint paths for the krb5kdc_t domain are the following:

       /usr/(kerberos/)?sbin/krb5kdc

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 krb5kdc policy is very flexible allowing users to setup their  krb5kdc
       processes in as secure a method as possible.

       The following process types are defined for krb5kdc:

       krb5kdc_t

       Note:  semanage	permissive -a krb5kdc_t can be used to make the process type krb5kdc_t permissive. SELinux does not deny access to permis-
       sive process types, but the AVC (SELinux denials) messages are still generated.

BOOLEANS

       SELinux policy is customizable based on least access required.  krb5kdc policy is extremely flexible and has several  booleans  that  allow
       you to manipulate the policy and run krb5kdc with the tightest access possible.

       If you want to allow all daemons to write corefiles to /, you must turn on the daemons_dump_core boolean. Disabled by default.

       setsebool -P daemons_dump_core 1

       If you want to enable cluster mode for daemons, you must turn on the daemons_enable_cluster_mode boolean. Enabled by default.

       setsebool -P daemons_enable_cluster_mode 1

       If you want to allow all daemons to use tcp wrappers, you must turn on the daemons_use_tcp_wrapper boolean. Disabled by default.

       setsebool -P daemons_use_tcp_wrapper 1

       If you want to allow all daemons the ability to read/write terminals, you must turn on the daemons_use_tty boolean. Disabled by default.

       setsebool -P daemons_use_tty 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 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  krb5kdc_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

       cluster_conf_t

	    /etc/cluster(/.*)?

       cluster_var_lib_t

	    /var/lib/pcsd(/.*)?
	    /var/lib/cluster(/.*)?
	    /var/lib/openais(/.*)?
	    /var/lib/pengine(/.*)?
	    /var/lib/corosync(/.*)?
	    /usr/lib/heartbeat(/.*)?
	    /var/lib/heartbeat(/.*)?
	    /var/lib/pacemaker(/.*)?

       cluster_var_run_t

	    /var/run/crm(/.*)?
	    /var/run/cman_.*
	    /var/run/rsctmp(/.*)?
	    /var/run/aisexec.*
	    /var/run/heartbeat(/.*)?
	    /var/run/cpglockd.pid
	    /var/run/corosync.pid
	    /var/run/rgmanager.pid
	    /var/run/cluster/rgmanager.sk

       krb5kdc_lock_t

	    /var/kerberos/krb5kdc/principal.*.ok
	    /var/kerberos/krb5kdc/from_master.*

       krb5kdc_log_t

	    /var/log/krb5kdc.log.*

       krb5kdc_principal_t

	    /etc/krb5kdc/principal.*
	    /usr/var/krb5kdc/principal.*
	    /var/kerberos/krb5kdc/principal.*

       krb5kdc_tmp_t

       krb5kdc_var_run_t

	    /var/run/krb5kdc(/.*)?

       root_t

	    /
	    /initrd

       security_t

	    /selinux

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 krb5kdc policy is very flexible allowing users  to  setup  their
       krb5kdc processes in as secure a method as possible.

       EQUIVALENCE DIRECTORIES

       krb5kdc	policy	stores	data  with  multiple different file context types under the /var/kerberos/krb5kdc directory.  If you would like to
       store the data in a different directory you can use the semanage command to create an equivalence mapping.  If you  wanted  to  store  this
       data under the /srv dirctory you would execute the following command:

       semanage fcontext -a -e /var/kerberos/krb5kdc /srv/krb5kdc
       restorecon -R -v /srv/krb5kdc

       STANDARD FILE CONTEXT

       SELinux	defines the file context types for the krb5kdc, if you wanted to store files with these types in a diffent paths, you need to exe-
       cute the semanage command to sepecify alternate labeling and then use restorecon to put the labels on disk.

       semanage fcontext -a -t krb5kdc_conf_t '/srv/krb5kdc/content(/.*)?'
       restorecon -R -v /srv/mykrb5kdc_content

       Note: SELinux often uses regular expressions to specify labels that match multiple files.

       The following file types are defined for krb5kdc:

       krb5kdc_conf_t

       - Set files with the krb5kdc_conf_t type, if you want to treat the files as krb5kdc configuration  data,  usually  stored  under  the  /etc
       directory.

       Paths:
	    /etc/krb5kdc(/.*)?, /usr/var/krb5kdc(/.*)?, /var/kerberos/krb5kdc(/.*)?

       krb5kdc_exec_t

       - Set files with the krb5kdc_exec_t type, if you want to transition an executable to the krb5kdc_t domain.

       krb5kdc_lock_t

       - Set files with the krb5kdc_lock_t type, if you want to treat the files as krb5kdc lock data, stored under the /var/lock directory

       Paths:
	    /var/kerberos/krb5kdc/principal.*.ok, /var/kerberos/krb5kdc/from_master.*

       krb5kdc_log_t

       - Set files with the krb5kdc_log_t type, if you want to treat the data as krb5kdc log data, usually stored under the /var/log directory.

       krb5kdc_principal_t

       - Set files with the krb5kdc_principal_t type, if you want to treat the files as krb5kdc principal data.

       Paths:
	    /etc/krb5kdc/principal.*, /usr/var/krb5kdc/principal.*, /var/kerberos/krb5kdc/principal.*

       krb5kdc_tmp_t

       - Set files with the krb5kdc_tmp_t type, if you want to store krb5kdc temporary files in the /tmp directories.

       krb5kdc_var_run_t

       - Set files with the krb5kdc_var_run_t type, if you want to store the krb5kdc files under the /run or /var/run directory.

       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.

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), krb5kdc(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8)

krb5kdc 							     14-06-10							krb5kdc_selinux(8)