snmpd_selinux(8) snmpd SELinux Policy documentation snmpd_selinux(8)NAMEsnmpd_selinux - Security Enhanced Linux Policy for the snmpd processes
DESCRIPTION
Security-Enhanced Linux secures the snmpd processes via flexible manda‐
tory access control.
NSSWITCH DOMAIN
If you want to allow users to login using a sssd serve for the snmpd_t,
you must turn on the authlogin_nsswitch_use_ldap boolean.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to allow confined applications to run with kerberos for the
snmpd_t, you must turn on the allow_kerberos boolean.
setsebool -P allow_kerberos 1
If you want to allow system to run with NI for the snmpd_t, you must
turn on the allow_ypbind boolean.
setsebool -P allow_ypbind 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 ls
Policy governs the access confined processes have to these files.
SELinux snmpd policy is very flexible allowing users to setup their
snmpd processes in as secure a method as possible.
The following file types are defined for snmpd:
snmpd_exec_t
- Set files with the snmpd_exec_t type, if you want to transition an
executable to the snmpd_t domain.
snmpd_initrc_exec_t
- Set files with the snmpd_initrc_exec_t type, if you want to transi‐
tion an executable to the snmpd_initrc_t domain.
Paths:
/etc/rc.d/init.d/snmpd, /etc/rc.d/init.d/snmptrapd
snmpd_log_t
- Set files with the snmpd_log_t type, if you want to treat the data as
snmpd log data, usually stored under the /var/log directory.
snmpd_var_lib_t
- Set files with the snmpd_var_lib_t type, if you want to store the
snmpd files under the /var/lib directory.
Paths:
/var/agentx(/.*)?, /usr/share/snmp/mibs/.index, /var/net-
snmp(/.*)?, /var/lib/net-snmp(/.*)?, /var/lib/snmp(/.*)?
snmpd_var_run_t
- Set files with the snmpd_var_run_t type, if you want to store the
snmpd files under the /run directory.
Paths:
/var/run/net-snmpd(/.*)?, /var/run/snmpd.pid, /var/run/snmpd(/.*)?
Note: File context can be temporarily modified with the chcon command.
If you want to permanantly 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.
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 snmpd policy is very flexible allowing users to setup their
snmpd processes in as secure a method as possible.
The following port types are defined for snmpd:
snmp_port_t
Default Defined Ports:
tcp 161-162,199,1161
udp 161-162
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
snmpd policy is very flexible allowing users to setup their snmpd pro‐
cesses in as secure a method as possible.
The following process types are defined for snmpd:
snmpd_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 pol‐
icy modules.
semanage port can also be used to manipulate the port definitions
system-config-selinux is a GUI tool available to customize SELinux pol‐
icy settings.
AUTHOR
This manual page was autogenerated by genman.py.
SEE ALSOselinux(8), snmpd(8), semanage(8), restorecon(8), chcon(1)dwalsh@redhat.com snmpd snmpd_selinux(8)
