pppd_selinux - Online Linux Manual PageSection : 8
Updated : 21-04-01
Source : pppd
Note : SELinux Policy pppd

NAMEpppd_selinux − Security Enhanced Linux Policy for the pppd processes

DESCRIPTIONSecurity-Enhanced Linux secures the pppd processes via flexible mandatory access control. The pppd processes execute with the pppd_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 pppd_t

ENTRYPOINTSThe pppd_t SELinux type can be entered via the pppd_exec_t file type. The default entrypoint paths for the pppd_t domain are the following: /usr/sbin/pppd, /sbin/ppp-watch, /usr/sbin/ipppd, /sbin/pppoe-server, /usr/sbin/ppp-watch, /usr/sbin/pppoe-server

PROCESS TYPESSELinux 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 pppd policy is very flexible allowing users to setup their pppd processes in as secure a method as possible. The following process types are defined for pppd: pppd_tNote: semanage permissive -a pppd_t can be used to make the process type pppd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

BOOLEANSSELinux policy is customizable based on least access required. pppd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run pppd with the tightest access possible. If you want to allow pppd to load kernel modules for certain modems, you must turn on the pppd_can_insmod boolean. Disabled by default. setsebool -P pppd_can_insmod 1 If you want to allow pppd to be run for a regular user, you must turn on the pppd_for_user boolean. Disabled by default. setsebool -P pppd_for_user 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

MANAGED FILESThe SELinux process type pppd_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.
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/pcsd-ruby.socket
/var/run/corosync-qnetd(/.*)?
/var/run/corosync-qdevice(/.*)?
/var/run/corosync.pid
/var/run/cpglockd.pid
/var/run/rgmanager.pid
/var/run/cluster/rgmanager.sk

faillog_t /var/log/btmp.*
/var/log/faillog.*
/var/log/tallylog.*
/var/run/faillock(/.*)?

pppd_etc_rw_t /etc/ppp(/.*)?
/etc/ppp/peers(/.*)?
/etc/ppp/resolv.conf

pppd_lock_t /var/lock/ppp(/.*)?

pppd_log_t /var/log/ppp(/.*)?
/var/log/ppp-connect-errors.*

pppd_var_run_t /var/run/(i)?ppp.*pid[^/]*
/var/run/ppp(/.*)?
/var/run/pppd[0-9]*.tdb

root_t /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd

wtmp_t /var/log/wtmp.*

FILE CONTEXTSSELinux 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 pppd policy is very flexible allowing users to setup their pppd processes in as secure a method as possible. EQUIVALENCE DIRECTORIES pppd policy stores data with multiple different file context types under the /var/log/ppp 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 directory you would execute the following command: semanage fcontext -a -e /var/log/ppp /srv/ppp
restorecon -R -v /srv/ppp
pppd policy stores data with multiple different file context types under the /var/run/ppp 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 directory you would execute the following command: semanage fcontext -a -e /var/run/ppp /srv/ppp
restorecon -R -v /srv/ppp
STANDARD FILE CONTEXT SELinux defines the file context types for the pppd, 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 pppd_var_run_t '/srv/mypppd_content(/.*)?'
restorecon -R -v /srv/mypppd_content Note: SELinux often uses regular expressions to specify labels that match multiple files. The following file types are defined for pppd:
pppd_etc_rw_t- Set files with the pppd_etc_rw_t type, if you want to treat the files as pppd etc read/write content.
Paths:  /etc/ppp(/.*)?, /etc/ppp/peers(/.*)?, /etc/ppp/resolv.conf pppd_etc_t- Set files with the pppd_etc_t type, if you want to store pppd files in the /etc directories.
Paths:  /root/.ppprc, /etc/ppp pppd_exec_t- Set files with the pppd_exec_t type, if you want to transition an executable to the pppd_t domain.
Paths:  /usr/sbin/pppd, /sbin/ppp-watch, /usr/sbin/ipppd, /sbin/pppoe-server, /usr/sbin/ppp-watch, /usr/sbin/pppoe-server pppd_initrc_exec_t- Set files with the pppd_initrc_exec_t type, if you want to transition an executable to the pppd_initrc_t domain.
Paths:  /etc/ppp/(auth|ip(v6|x)?)-(up|down), /etc/rc.d/init.d/ppp pppd_lock_t- Set files with the pppd_lock_t type, if you want to treat the files as pppd lock data, stored under the /var/lock directory pppd_log_t- Set files with the pppd_log_t type, if you want to treat the data as pppd log data, usually stored under the /var/log directory.
Paths:  /var/log/ppp(/.*)?, /var/log/ppp-connect-errors.* pppd_secret_t- Set files with the pppd_secret_t type, if you want to treat the files as pppd se secret data. pppd_tmp_t- Set files with the pppd_tmp_t type, if you want to store pppd temporary files in the /tmp directories. pppd_unit_file_t- Set files with the pppd_unit_file_t type, if you want to treat the files as pppd unit content. pppd_var_run_t- Set files with the pppd_var_run_t type, if you want to store the pppd files under the /run or /var/run directory.
Paths:  /var/run/(i)?ppp.*pid[^/]*, /var/run/ppp(/.*)?, /var/run/pppd[0-9]*.tdb 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.

COMMANDSsemanage 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.

AUTHORThis manual page was auto-generated using sepolicy manpage".

SEE ALSOselinux(8), pppd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)
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