tor_selinux(8)

🎀 NAME 🎀 (bestie edition)

okay so tor_selinux — Security Enhanced Linux Policy for the tor processes, periodt 💅

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✨ DESCRIPTION ✨

Security-Enhanced Linux secures the tor processes via flexible mandatory access control. it's giving security but make it fashion 🦋

The tor processes execute with the tor_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier. iykyk 👑

For example:

ps -eZ | grep tor_t

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🌸 ENTRYPOINTS 🌸

The tor_t SELinux type can be entered via the tor_exec_t file type. that's the VIP entrance bestie 🎀

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

/usr/bin/tor

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👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. yes literally every process gets its own little domain, slay 💅

You can see the context of a process using the -Z option to ps. go off, -Z ✨

Policy governs the access confined processes have to files. SELinux tor policy is very flexible allowing users to setup their tor processes in as secure a method as possible. highkey obsessed with how flexible this is 🫶

The following process types are defined for tor:

tor_t

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

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💖 BOOLEANS 💖

SELinux policy is customizable based on least access required. tor policy is extremely flexible and has several booleans that allow you to manipulate the policy and run tor with the tightest access possible. tightest access = main character energy 🔥

If you want to determine whether tor can bind tcp and udp sockets to all unreserved ports, you must turn on the tor_bind_all_unreserved_ports boolean. Disabled by default.

setsebool -P tor_bind_all_unreserved_ports 1

If you want to allow tor to act as a relay, you must turn on the tor_can_network_relay boolean. Disabled by default.

setsebool -P tor_can_network_relay 1

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

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🦋 PORT TYPES 🦋

SELinux defines port types to represent TCP and UDP ports. so many ports, so little time 😭

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 tor policy is very flexible allowing users to setup their tor processes in as secure a method as possible. again, flexible queen behavior 👑

The following port types are defined for tor:

tor_port_t

Default Defined Ports:

tcp 6969,9001,9030,9050,9051,9150

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💅 MANAGED FILES 💅

The SELinux process type tor_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. don't forget about DAC, bestie, that's important fr fr 🙈

• 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

• tor_var_lib_t

/var/lib/tor(/.*)?
/var/lib/tor-data(/.*)?

• tor_var_run_t

/run/tor(/.*)?

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🎀 FILE CONTEXTS 🎀

SELinux requires files to have an extended attribute to define the file type. it's giving files with lore 💅

You can see the context of a file using the -Z option to ls. -Z really be doing the most, and we love that for it ✨

Policy governs the access confined processes have to these files. SELinux tor policy is very flexible allowing users to setup their tor processes in as secure a method as possible. flexible and secure? we love a multihyphenate 🫶

🌈 EQUIVALENCE DIRECTORIES 🌈

tor policy stores data with multiple different file context types under the /var/lib/tor directory. If you would like to store the data in a different directory you can use the semanage command to create an equivalence mapping. If you wanted to store this data under the /srv directory you would execute the following command:

semanage fcontext -a -e /var/lib/tor /srv/tor
restorecon -R -v /srv/tor

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the tor, 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. different paths, same iconic labeling, periodt 💅

semanage fcontext -a -t tor_exec_t '/srv/tor/content(/.*)?'
restorecon -R -v /srv/mytor_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. regex bestie, it's everywhere 👀

The following file types are defined for tor:

• tor_etc_t — Set files with the tor_etc_t type, if you want to store tor files in the /etc directories. classic /etc behavior, iconic 🌸
• tor_exec_t — Set files with the tor_exec_t type, if you want to transition an executable to the tor_t domain. the glow-up domain transition we love to see 🔥
• tor_initrc_exec_t — Set files with the tor_initrc_exec_t type, if you want to transition an executable to the tor_initrc_t domain. another domain, another slay 👑
• tor_unit_file_t — Set files with the tor_unit_file_t type, if you want to treat the files as tor unit content. unit content but make it aesthetic 🎀
• tor_var_lib_t — Set files with the tor_var_lib_t type, if you want to store the tor files under the /var/lib directory. Paths:

/var/lib/tor(/.*)?, /var/lib/tor-data(/.*)?

• tor_var_log_t — Set files with the tor_var_log_t type, if you want to treat the data as tor var log data, usually stored under the /var/log directory. logs but make it tor logs 💅
• tor_var_run_t — Set files with the tor_var_run_t type, if you want to store the tor files under the /run or /var/run directory. runtime files, runtime vibes 🦋

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 — know the difference, bestie, fr fr 😭

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🫶 COMMANDS 🫶

semanage fcontext can also be used to manipulate default file context mappings. it's giving multitasking icon 💅

semanage permissive can also be used to manipulate whether or not a process type is permissive. permissive queen behavior 👑

semanage module can also be used to enable/disable/install/remove policy modules. enable, disable, install, remove — so many verbs, so much power 🔥

semanage port can also be used to manipulate the port definitions. ports are lowkey important, don't sleep on them 🦋

semanage boolean can also be used to manipulate the booleans. booleans stay booked and busy 💖

system-config-selinux is a GUI tool available to customize SELinux policy settings. a whole GUI?? for the girlies who love clicking 💅✨

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💜 AUTHOR 💜

This manual page was auto-generated using sepolicy manpage . no human author, just sepolicy doing its thing, and honestly? iconic of it 🤖✨

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🌟 SEE ALSO 🌟

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

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and that's literally the whole manual, bestie! ✨ so next time you're deep in SELinux and need to know about tor_t, tor_port_t, all the booleans, or where the files live, you'll know exactly what's up. now go slay those contexts! 🎀

(oh and btw — this little number was brought to you by the tor package, dated 26-10-06 — iykyk, that's the source and version and date all in one cute lil sign-off 💖💅✨)