DESCRIPTION Security-Enhanced Linux secures the courier_tcpd processes via flexible mandatory access control.
The courier_tcpd processes execute with the courier_tcpd_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.
ENTRYPOINTS The courier_tcpd_t SELinux type can be entered via the courier_tcpd_exec_t file type.
Policy governs the access confined processes have to files. SELinux courier_tcpd policy is very flexible allowing users to setup their courier_tcpd processes in as secure a method as possible.
Note: semanage permissive -a courier_tcpd_t can be used to make the process type courier_tcpd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.
BOOLEANS SELinux policy is customizable based on least access required. courier_tcpd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run courier_tcpd with the tight- est access possible.
MANAGED FILES The SELinux process type courier_tcpd_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 per- missions.
Policy governs the access confined processes have to these files. SELinux courier_tcpd policy is very flexible allowing users to setup their courier_tcpd processes in as secure a method as possible.
SELinux defines the file context types for the courier_tcpd, 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.
- Set files with the courier_tcpd_exec_t type, if you want to transi- tion an executable to the courier_tcpd_t domain.