snort_selinux(8) - Linux man page

Name

snort_selinux - Security Enhanced Linux Policy for the snort processes

Description

Security-Enhanced Linux secures the snort processes via flexible mandatory access control.

The snort processes execute with the snort_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 snort_t

Entrypoints

The snort_t SELinux type can be entered via the "snort_exec_t" file type. The default entrypoint paths for the snort_t domain are the following:"

/usr/s?bin/snort, /usr/sbin/snort-plain

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 snort policy is very flexible allowing users to setup their snort processes in as secure a method as possible.

The following process types are defined for snort:

snort_t

Note: semanage permissive -a snort_t

can be used to make the process type snort_t permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

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 snort policy is very flexible allowing users to setup their snort processes in as secure a method as possible.

The following file types are defined for snort:

snort_etc_t

- Set files with the snort_etc_t type, if you want to store snort files in the /etc directories.

snort_exec_t

- Set files with the snort_exec_t type, if you want to transition an executable to the snort_t domain.

snort_initrc_exec_t

- Set files with the snort_initrc_exec_t type, if you want to transition an executable to the snort_initrc_t domain.

snort_log_t

- Set files with the snort_log_t type, if you want to treat the data as snort log data, usually stored under the /var/log directory.

snort_tmp_t

- Set files with the snort_tmp_t type, if you want to store snort temporary files in the /tmp directories.

snort_var_run_t

- Set files with the snort_var_run_t type, if you want to store the snort 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.

Managed Files

The SELinux process type snort_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.

initrc_tmp_t

mnt_t

/mnt(/[^/]*)

/mnt(/[^/]*)?

/rhev(/[^/]*)?

/media(/[^/]*)

/media(/[^/]*)?

/etc/rhgb(/.*)?

/media/.hal-.*

/net

/afs

/misc

/rhev

prelude_spool_t

/var/spool/prelude(/.*)?

/var/spool/prelude-manager(/.*)?

root_t

/initrd

snort_log_t

/var/log/snort(/.*)?

snort_tmp_t
snort_var_run_t

/var/run/snort.*

tmp_t

/tmp

/usr/tmp

/var/tmp

/var/tmp/vi.recover

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 policy modules.

system-config-selinux is a GUI tool available to customize SELinux policy settings.

Author

This manual page was auto-generated using sepolicy manpage by mgrepl.