dhcpc_selinux(8) dhcpc SELinux Policy documentation dhcpc_selinux(8)
NAME dhcpc_selinux - Security Enhanced Linux Policy for the dhcpc processes
DESCRIPTION BOOLEANS SELinux policy is customizable based on least access required. dhcpc policy is extremely flexible and has several booleans that allow you to manipulate the policy and run dhcpc with the tightest access possible.
If you want to allow dhcpc client applications to execute iptables com- mand, you must turn on the dhcpc_exec_iptables boolean.
setsebool -P dhcpc_exec_iptables 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 dhcpc policy is very flexible allowing users to setup their dhcpc processes in as secure a method as possible.
The following file types are defined for dhcpc:
- Set files with the dhcpc_exec_t type, if you want to transition an executable to the dhcpc_t domain.
Paths: /sbin/dhcpcd, /sbin/dhclient.*, /sbin/pump, /sbin/dhcdbd
- Set files with the dhcpc_helper_exec_t type, if you want to transi- tion an executable to the dhcpc_helper_t domain.
- Set files with the dhcpc_state_t type, if you want to treat the files as dhcpc state data.
Paths: /var/lib/dhclient(/.*)?, /var/lib/dhcp3?/dhclient.*, /var/lib/wifiroamd(/.*)?, /var/lib/dhcpcd(/.*)?
- Set files with the dhcpc_tmp_t type, if you want to store dhcpc temporary files in the /tmp directories.
- Set files with the dhcpc_var_run_t type, if you want to store the dhcpc files under the /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.
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 dhcpc policy is very flexible allowing users to setup their dhcpc processes in as secure a method as possible.
The following port types are defined for dhcpc:
Default Defined Ports: tcp 8021
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 dhcpc policy is very flexible allowing users to setup their dhcpc pro- cesses in as secure a method as possible.
The following process types are defined for dhcpc:
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
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 autogenerated by genman.py.
SEE ALSO selinux(8), dhcpc(8), semanage(8), restorecon(8), chcon(1) , setse- bool(8)
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