dhcpc_selinux(8)

1dhcpc_selinux(8)             SELinux Policy dhcpc             dhcpc_selinux(8)
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NAME

6       dhcpc_selinux - Security Enhanced Linux Policy for the dhcpc processes
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DESCRIPTION

9       Security-Enhanced Linux secures the dhcpc processes via flexible manda‐
10       tory access control.
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12       The dhcpc processes execute with the  dhcpc_t  SELinux  type.  You  can
13       check  if  you have these processes running by executing the ps command
14       with the -Z qualifier.
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16       For example:
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18       ps -eZ | grep dhcpc_t
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ENTRYPOINTS

23       The dhcpc_t SELinux type can be entered via the dhcpc_exec_t file type.
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25       The default entrypoint paths for the dhcpc_t domain are the following:
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27       /sbin/dhclient.*,   /usr/sbin/dhclient.*,   /sbin/pump,   /sbin/dhcdbd,
28       /sbin/dhcpcd, /usr/sbin/pump, /usr/sbin/dhcdbd, /usr/sbin/dhcpcd
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PROCESS TYPES

31       SELinux defines process types (domains) for each process running on the
32       system
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34       You can see the context of a process using the -Z option to ps
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36       Policy governs the access confined processes have  to  files.   SELinux
37       dhcpc  policy is very flexible allowing users to setup their dhcpc pro‐
38       cesses in as secure a method as possible.
39
40       The following process types are defined for dhcpc:
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42       dhcpc_t
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44       Note: semanage permissive -a dhcpc_t can be used to  make  the  process
45       type  dhcpc_t  permissive.  SELinux  does not deny access to permissive
46       process types, but the AVC (SELinux denials) messages are still  gener‐
47       ated.
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BOOLEANS

51       SELinux  policy  is customizable based on least access required.  dhcpc
52       policy is extremely flexible and has several booleans that allow you to
53       manipulate the policy and run dhcpc with the tightest access possible.
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57       If you want to allow dhcpc client applications to execute iptables com‐
58       mands, you must turn on the dhcpc_exec_iptables  boolean.  Disabled  by
59       default.
60
61       setsebool -P dhcpc_exec_iptables 1
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65       If you want to allow all domains to execute in fips_mode, you must turn
66       on the fips_mode boolean. Enabled by default.
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68       setsebool -P fips_mode 1
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PORT TYPES

73       SELinux defines port types to represent TCP and UDP ports.
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75       You can see the types associated with a port  by  using  the  following
76       command:
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78       semanage port -l
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81       Policy  governs  the  access  confined  processes  have to these ports.
82       SELinux dhcpc policy is very flexible allowing  users  to  setup  their
83       dhcpc processes in as secure a method as possible.
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85       The following port types are defined for dhcpc:
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87
88       dhcpc_port_t
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92       Default Defined Ports:
93                 tcp 68,546,5546
94                 udp 68,546,5546
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MANAGED FILES

97       The SELinux process type dhcpc_t can manage files labeled with the fol‐
98       lowing file types.  The paths listed are the default  paths  for  these
99       file types.  Note the processes UID still need to have DAC permissions.
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101       NetworkManager_var_lib_t
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103            /var/lib/wicd(/.*)?
104            /var/lib/NetworkManager(/.*)?
105            /etc/dhcp/wired-settings.conf
106            /etc/wicd/wired-settings.conf
107            /etc/dhcp/manager-settings.conf
108            /etc/wicd/manager-settings.conf
109            /etc/dhcp/wireless-settings.conf
110            /etc/wicd/wireless-settings.conf
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112       NetworkManager_var_run_t
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114            /var/run/teamd(/.*)?
115            /var/run/nm-xl2tpd.conf.*
116            /var/run/nm-dhclient.*
117            /var/run/NetworkManager(/.*)?
118            /var/run/wpa_supplicant(/.*)?
119            /var/run/wicd.pid
120            /var/run/NetworkManager.pid
121            /var/run/nm-dns-dnsmasq.conf
122            /var/run/wpa_supplicant-global
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124       chronyd_var_run_t
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126            /var/run/chrony(/.*)?
127            /var/run/chronyd(/.*)?
128            /var/run/chrony-dhcp(/.*)?
129            /var/run/chrony-helper(/.*)?
130            /var/run/chronyd.pid
131            /var/run/chronyd.sock
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133       cluster_conf_t
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135            /etc/cluster(/.*)?
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137       cluster_var_lib_t
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139            /var/lib/pcsd(/.*)?
140            /var/lib/cluster(/.*)?
141            /var/lib/openais(/.*)?
142            /var/lib/pengine(/.*)?
143            /var/lib/corosync(/.*)?
144            /usr/lib/heartbeat(/.*)?
145            /var/lib/heartbeat(/.*)?
146            /var/lib/pacemaker(/.*)?
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148       cluster_var_run_t
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150            /var/run/crm(/.*)?
151            /var/run/cman_.*
152            /var/run/rsctmp(/.*)?
153            /var/run/aisexec.*
154            /var/run/heartbeat(/.*)?
155            /var/run/pcsd-ruby.socket
156            /var/run/corosync-qnetd(/.*)?
157            /var/run/corosync-qdevice(/.*)?
158            /var/run/corosync.pid
159            /var/run/cpglockd.pid
160            /var/run/rgmanager.pid
161            /var/run/cluster/rgmanager.sk
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163       dhcpc_state_t
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165            /var/lib/dhcp3?/dhclient.*
166            /var/lib/dhcpcd(/.*)?
167            /var/lib/dhclient(/.*)?
168            /var/lib/wifiroamd(/.*)?
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170       dhcpc_var_run_t
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172            /var/run/dhcpcd(/.*)?
173            /var/run/dhclient.*
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175       initrc_var_run_t
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177            /var/run/utmp
178            /var/run/random-seed
179            /var/run/runlevel.dir
180            /var/run/setmixer_flag
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182       krb5_host_rcache_t
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184            /var/tmp/krb5_0.rcache2
185            /var/cache/krb5rcache(/.*)?
186            /var/tmp/nfs_0
187            /var/tmp/DNS_25
188            /var/tmp/host_0
189            /var/tmp/imap_0
190            /var/tmp/HTTP_23
191            /var/tmp/HTTP_48
192            /var/tmp/ldap_55
193            /var/tmp/ldap_487
194            /var/tmp/ldapmap1_0
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196       root_t
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198            /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
199            /
200            /initrd
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202       systemd_passwd_var_run_t
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204            /var/run/systemd/ask-password(/.*)?
205            /var/run/systemd/ask-password-block(/.*)?
206
207       virt_lxc_var_run_t
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209            /var/run/libvirt/lxc(/.*)?
210            /var/run/libvirt-sandbox(/.*)?
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212       virt_var_run_t
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214            /var/vdsm(/.*)?
215            /var/run/vdsm(/.*)?
216            /var/run/libvirt(/.*)?
217            /var/run/libvirtd.pid
218            /var/run/qemu-pr-helper.sock
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FILE CONTEXTS

222       SELinux requires files to have an extended attribute to define the file
223       type.
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225       You can see the context of a file using the -Z option to ls
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227       Policy governs the access  confined  processes  have  to  these  files.
228       SELinux  dhcpc  policy  is  very flexible allowing users to setup their
229       dhcpc processes in as secure a method as possible.
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231       STANDARD FILE CONTEXT
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233       SELinux defines the file context types for the dhcpc, if you wanted  to
234       store  files  with  these types in a diffent paths, you need to execute
235       the semanage command to specify alternate labeling  and  then  use  re‐
236       storecon to put the labels on disk.
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238       semanage fcontext -a -t dhcpc_var_run_t '/srv/mydhcpc_content(/.*)?'
239       restorecon -R -v /srv/mydhcpc_content
240
241       Note:  SELinux  often  uses  regular expressions to specify labels that
242       match multiple files.
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244       The following file types are defined for dhcpc:
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248       dhcpc_exec_t
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250       - Set files with the dhcpc_exec_t type, if you want  to  transition  an
251       executable to the dhcpc_t domain.
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254       Paths:
255            /sbin/dhclient.*,  /usr/sbin/dhclient.*, /sbin/pump, /sbin/dhcdbd,
256            /sbin/dhcpcd, /usr/sbin/pump, /usr/sbin/dhcdbd, /usr/sbin/dhcpcd
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259       dhcpc_helper_exec_t
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261       - Set files with the dhcpc_helper_exec_t type, if you want  to  transi‐
262       tion an executable to the dhcpc_helper_t domain.
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266       dhcpc_state_t
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268       - Set files with the dhcpc_state_t type, if you want to treat the files
269       as dhcpc state data.
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272       Paths:
273            /var/lib/dhcp3?/dhclient.*,                 /var/lib/dhcpcd(/.*)?,
274            /var/lib/dhclient(/.*)?, /var/lib/wifiroamd(/.*)?
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277       dhcpc_tmp_t
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279       -  Set files with the dhcpc_tmp_t type, if you want to store dhcpc tem‐
280       porary files in the /tmp directories.
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284       dhcpc_var_run_t
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286       - Set files with the dhcpc_var_run_t type, if you  want  to  store  the
287       dhcpc files under the /run or /var/run directory.
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290       Paths:
291            /var/run/dhcpcd(/.*)?, /var/run/dhclient.*
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293
294       Note:  File context can be temporarily modified with the chcon command.
295       If you want to permanently change the file context you need to use  the
296       semanage fcontext command.  This will modify the SELinux labeling data‐
297       base.  You will need to use restorecon to apply the labels.
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COMMANDS

301       semanage fcontext can also be used to manipulate default  file  context
302       mappings.
303
304       semanage  permissive  can  also  be used to manipulate whether or not a
305       process type is permissive.
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307       semanage module can also be used to enable/disable/install/remove  pol‐
308       icy modules.
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310       semanage port can also be used to manipulate the port definitions
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312       semanage boolean can also be used to manipulate the booleans
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315       system-config-selinux is a GUI tool available to customize SELinux pol‐
316       icy settings.
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AUTHOR

320       This manual page was auto-generated using sepolicy manpage .
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