snort_selinux(8)

📦
version 20250627+git412.dbf877ab7 · 7 versions
, in opensuse-leap 16.0

✨ snort_selinux(8) — the glow-up 💅

okay so this is the tea on snort_selinux, the SELinux policy page for the snort processes. bestie, if you've ever been like "why is snort being weird under SELinux," this is literally your map. 🗺️

🌸 NAME 🌸

snort_selinux — Security Enhanced Linux Policy for the snort processes. periodt.

🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the snort processes via flexible mandatory access control. it's giving very demure, very secure. 🔐

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/bin/snort, /usr/bin/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. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. it's like a "warning: I'm watching you 👀" situation, no cap.

✨ BOOLEANS ✨

SELinux policy is customizable based on least access required. snort policy is extremely flexible and has several booleans that allow you to manipulate the policy and run snort with the tightest access possible.

  • if you want to dontaudit all daemons scheduling requests (setsched, sys_nice), you must turn on the daemons_dontaudit_scheduling boolean. Enabled by default.
setsebool -P daemons_dontaudit_scheduling 1
  • if you want to deny all system processes and Linux users to use bluetooth wireless technology, you must turn on the deny_bluetooth boolean. Disabled by default. (sorry bluetooth girlies, this one's a no 🙈)
setsebool -P deny_bluetooth 1
  • if you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default. it's giving compliance core.
setsebool -P fips_mode 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

🧚 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 process's UID still needs to have DAC permissions. iykyk 🫶

  • 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
/run/crm(/.*)?
/run/cman_.*
/run/rsctmp(/.*)?
/run/aisexec.*
/run/heartbeat(/.*)?
/run/pcsd-ruby.socket
/run/corosync-qnetd(/.*)?
/run/corosync-qdevice(/.*)?
/run/pcsd.socket
/run/corosync.pid
/run/cpglockd.pid
/run/rgmanager.pid
/run/cluster/rgmanager.sk
  • krb5_host_rcache_t
/var/tmp/krb5_0.rcache2
/var/cache/krb5rcache(/.*)?
/var/tmp/nfs_0
/var/tmp/DNS_25
/var/tmp/host_0
/var/tmp/imap_0
/var/tmp/HTTP_23
/var/tmp/HTTP_48
/var/tmp/ldap_55
/var/tmp/ldap_487
/var/tmp/ldapmap1_0
  • prelude_spool_t
/var/spool/prelude(/.*)?
/var/spool/prelude-manager(/.*)?
  • root_t
/sysroot/.aleph-version.json
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
/var/lib/ntp
  • snort_log_t
/var/log/snort(/.*)?
  • snort_tmp_t — no paths listed, she's mysterious like that 💅
  • snort_var_run_t
/run/snort.*

🌈 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.

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the snort processes. if you wanted to store files with these types in a different paths, you need to execute the semanage command to specify alternate labeling and then use restorecon to put the labels on disk.

semanage fcontext -a -t snort_exec_t '/srv/snort/content(/.*)?'
restorecon -R -v /srv/mysnort_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies rise up 🧚‍♀️

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.

Paths:

/usr/bin/snort, /usr/bin/snort-plain
  • 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 or /var/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. temporary vs permanent, choose your fighter 🥊

🔥 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.
  • semanage boolean can also be used to manipulate the booleans.
  • system-config-selinux is a GUI tool available to customize SELinux policy settings.

👑 AUTHOR 👑

This manual page was auto-generated using sepolicy manpage. the robots did their thing 🤖✨

🍓 SEE ALSO 🍓

selinux(8), snort(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)

and that's the whole vibe check, bestie. source and version? we're on snort 26-10-06, and yes this is the snort_selinux(8) manual. slay, stay secure, and don't forget to restorecon 💜🎀🦋

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