zabbix_agent_selinux(8) SELinux Policy zabbix_agent zabbix_agent_selinux(8)NAMEzabbix_agent_selinux - Security Enhanced Linux Policy for the zab‐
bix_agent processes
DESCRIPTION
Security-Enhanced Linux secures the zabbix_agent processes via flexible
mandatory access control.
The zabbix_agent processes execute with the zabbix_agent_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 zabbix_agent_t
ENTRYPOINTS
The zabbix_agent_t SELinux type can be entered via the zab‐
bix_agent_exec_t file type.
The default entrypoint paths for the zabbix_agent_t domain are the fol‐
lowing:
/usr/bin/zabbix_agentd, /usr/sbin/zabbix_agentd
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
zabbix_agent policy is very flexible allowing users to setup their zab‐
bix_agent processes in as secure a method as possible.
The following process types are defined for zabbix_agent:
zabbix_agent_t
Note: semanage permissive -a zabbix_agent_t can be used to make the
process type zabbix_agent_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. zab‐
bix_agent policy is extremely flexible and has several booleans that
allow you to manipulate the policy and run zabbix_agent with the tight‐
est 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 confined applications to use nscd shared memory,
you must turn on the nscd_use_shm boolean. Enabled by default.
setsebool -P nscd_use_shm 1
PORT TYPES
SELinux defines port types to represent TCP and UDP ports.
You can see the types associated with a port by using the following
command:
semanage port -l
Policy governs the access confined processes have to these ports.
SELinux zabbix_agent policy is very flexible allowing users to setup
their zabbix_agent processes in as secure a method as possible.
The following port types are defined for zabbix_agent:
zabbix_agent_port_t
Default Defined Ports:
tcp 10050
MANAGED FILES
The SELinux process type zabbix_agent_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 per‐
missions.
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
root_t
/
/initrd
zabbix_log_t
/var/log/zabbix(/.*)?
zabbix_tmpfs_t
zabbix_var_run_t
/var/run/zabbix(/.*)?
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 zabbix_agent policy is very flexible allowing users to setup
their zabbix_agent processes in as secure a method as possible.
STANDARD FILE CONTEXT
SELinux defines the file context types for the zabbix_agent, if you
wanted to store files with these types in a diffent paths, you need to
execute the semanage command to sepecify alternate labeling and then
use restorecon to put the labels on disk.
semanage fcontext -a-t zabbix_agent_exec_t '/srv/zabbix_agent/con‐
tent(/.*)?'
restorecon -R -v /srv/myzabbix_agent_content
Note: SELinux often uses regular expressions to specify labels that
match multiple files.
The following file types are defined for zabbix_agent:
zabbix_agent_exec_t
- Set files with the zabbix_agent_exec_t type, if you want to transi‐
tion an executable to the zabbix_agent_t domain.
Paths:
/usr/bin/zabbix_agentd, /usr/sbin/zabbix_agentd
zabbix_agent_initrc_exec_t
- Set files with the zabbix_agent_initrc_exec_t type, if you want to
transition an executable to the zabbix_agent_initrc_t domain.
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 data‐
base. 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 pol‐
icy modules.
semanage port can also be used to manipulate the port definitions
semanage boolean can also be used to manipulate the booleans
system-config-selinux is a GUI tool available to customize SELinux pol‐
icy settings.
AUTHOR
This manual page was auto-generated using sepolicy manpage .
SEE ALSOselinux(8), zabbix_agent(8), semanage(8), restorecon(8), chcon(1),
sepolicy(8) , setsebool(8)zabbix_agent 13-11-20 zabbix_agent_selinux(8)
