stunnel_selinux(8)

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

✨ stunnel_selinux — the glow-up guide ✨

okay so bestie, this is the stunnel_selinux(8) manual page, and it's literally all about the SELinux policy for stunnel processes. it's giving security realness and honestly? iconic. let's get into it 💅

🌸 NAME 🌸

stunnel_selinux — Security Enhanced Linux Policy for the stunnel processes, periodt. 💖

🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the stunnel processes via flexible mandatory access control. no cap, it's out here protecting your vibes with mandatory energy.

The stunnel processes execute with the stunnel_t SELinux type. you can check if you have these processes running by executing the ps command with the -Z qualifier. it's literally that easy, bestie.

For example:

ps -eZ | grep stunnel_t

🎀 ENTRYPOINTS 🎀

The stunnel_t SELinux type can be entered via the stunnel_exec_t file type. like, that's the doorway, the main character entrance, iykyk.

The default entrypoint paths for the stunnel_t domain are the following:

/usr/bin/stunnel

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. it's giving organizational excellence.

You can see the context of a process using the -Z option to ps. so like, use it, bestie, it's right there.

Policy governs the access confined processes have to files. SELinux stunnel policy is very flexible allowing users to setup their stunnel processes in as secure a method as possible. it's literally the most accommodating.

The following process types are defined for stunnel:

stunnel_t

Note: semanage permissive -a stunnel_t can be used to make the process type stunnel_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it's chill but it's still watching you, no cap. 🙈

🔥 BOOLEANS 🔥

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

  • 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 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 system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.
setsebool -P nis_enabled 1

🌈 PORT TYPES 🌈

SELinux defines port types to represent TCP and UDP ports. it's giving networking but make it secure.

You can see the types associated with a port by using the following command:

semanage port -l

Policy governs the access confined processes have to these ports. SELinux stunnel policy is very flexible allowing users to setup their stunnel processes in as secure a method as possible.

The following port types are defined for stunnel:

stunnel_port_t

💜 MANAGED FILES 💜

The SELinux process type stunnel_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. like, SELinux is doing its part but your UID gotta do its part too, bestie.

  • 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
  • root_t
/sysroot/.aleph-version.json
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
/var/lib/ntp
  • stunnel_log_t
/var/log/stunnel.*
  • stunnel_tmp_t — no paths listed, it's mysterious like that ✨
  • stunnel_var_run_t
/run/stunnel(/.*)?

🫶 FILE CONTEXTS 🫶

SELinux requires files to have an extended attribute to define the file type. it's giving metadata excellence.

You can see the context of a file using the -Z option to ls. go off, bestie.

Policy governs the access confined processes have to these files. SELinux stunnel policy is very flexible allowing users to setup their stunnel processes in as secure a method as possible.

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the stunnel, 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. it's a two-step process but it slays.

semanage fcontext -a -t stunnel_exec_t '/srv/stunnel/content(/.*)?'
restorecon -R -v /srv/mystunnel_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. regex is that girl, fr fr.

The following file types are defined for stunnel:

  • stunnel_etc_t — Set files with the stunnel_etc_t type, if you want to store stunnel files in the /etc directories.
  • stunnel_exec_t — Set files with the stunnel_exec_t type, if you want to transition an executable to the stunnel_t domain.
  • stunnel_log_t — Set files with the stunnel_log_t type, if you want to treat the data as stunnel log data, usually stored under the /var/log directory.
  • stunnel_tmp_t — Set files with the stunnel_tmp_t type, if you want to store stunnel temporary files in the /tmp directories.
  • stunnel_var_run_t — Set files with the stunnel_var_run_t type, if you want to store the stunnel 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. so like, chcon is for a quick vibe, semanage fcontext is for the long-term commitment. 💍

💖 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 port can also be used to manipulate the port definitions.
  • semanage boolean can also be used to manipulate the booleans.
  • system-config-selinux is a GUI tool available to customize SELinux policy settings. it's giving graphical interface realness.

🧚 AUTHOR 🧚

This manual page was auto-generated using sepolicy manpage. the robots did this one, bestie, we just made it cute.

⭐ SEE ALSO ⭐

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

and that's the tea, bestie! ☕ this page is stunnel from the stunnel_selinux(8) manual, dated 26-10-06, and it's literally here to help you understand SELinux policy for stunnel. now go forth and be secure. slay. 💅✨

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