Security-Enhanced Linux secures the polipo_session processes via flexible mandatory access control.
The polipo_session processes execute with the polipo_session_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.
ps -eZ | grep polipo_session_t
The polipo_session_t SELinux type can be entered via the polipo_exec_t file type.
The default entrypoint paths for the polipo_session_t domain are the following:
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux polipo_session policy is very flexible allowing users to setup their polipo_session processes in as secure a method as possible.
The following process types are defined for polipo_session:
Note: semanage permissive -a polipo_session_t can be used to make the process type polipo_session_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.
If you want to determine whether Polipo session daemon can bind tcp sockets to all unreserved ports, you must turn on the polipo_session_bind_all_unreserved_ports boolean. Disabled by default.
setsebool -P polipo_session_bind_all_unreserved_ports 1
If you want to determine whether calling user domains can execute Polipo daemon in the polipo_session_t domain, you must turn on the polipo_session_users boolean. Disabled by default.
setsebool -P polipo_session_users 1
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn on the authlogin_nsswitch_use_ldap boolean. Disabled by default.
setsebool -P authlogin_nsswitch_use_ldap 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 allow confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by default.
setsebool -P kerberos_enabled 1
If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.
setsebool -P nis_enabled 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
The SELinux process type polipo_session_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.
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.