comsat_selinux(8)

💅 comsat_selinux — the SELinux glow-up for comsat ✨

ok so bestie, this is the comsat_selinux(8) page, and it's literally all about how Security-Enhanced Linux keeps the comsat processes in check. no cap, it's giving "mandatory access control but make it fashion" 💖

---

🌸 NAME 🌸

comsat_selinux — the Security Enhanced Linux Policy for the comsat processes. that's it, that's the vibe 🫶

---

✨ SYNOPSIS ✨

(no synopsis line here bestie, this one's all prose — keep reading 👑)

---

🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the comsat processes via flexible mandatory access control. yes, mandatory — SELinux does not do "optional" 💅

The comsat processes execute with the comsat_t SELinux type. You can check if you've got these processes running by executing the ps command with the -Z qualifier. like so:

ps -eZ | grep comsat_t

that's the whole vibe check right there 🔍

---

🎀 ENTRYPOINTS 🎀

The comsat_t SELinux type can be entered via the comsat_exec_t file type. so that's your doorway, periodt 🚪✨

The default entrypoint paths for the comsat_t domain are literally just:

/usr/bin/in.comsat

---

🔥 PROCESS TYPES 🔥

SELinux defines process types (aka domains) for each process running on the system. every process gets a lil identity, iykyk 🌈

You can see the context of a process using the -Z option to ps. iconic.

Policy governs the access confined processes have to files. The SELinux comsat policy is very flexible, allowing users to set up their comsat processes in as secure a method as possible. obsessed with the flexibility ngl 🫶

The following process types are defined for comsat:

• comsat_t

Note: semanage permissive -a comsat_t can be used to make the process type comsat_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it's not a free pass — the receipts still get printed, bestie 🧾💀

---

💜 BOOLEANS 💜

SELinux policy is customizable based on least access required. the comsat policy is extremely flexible and has several booleans that let you manipulate the policy and run comsat with the tightest access possible. lowkey the most customizable thing ever ✨

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. ports have types too, they're main characters in their own right 👑

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 comsat policy is very flexible, allowing users to set up their comsat processes in as secure a method as possible. again: flexible, we stan 💅

The following port types are defined for comsat:

• comsat_port_t

Default Defined Ports:

udp 512

---

🍓 MANAGED FILES 🍓

The SELinux process type comsat_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 — SELinux isn't gonna override your regular permissions, no cap 🙈

• comsat_tmp_t
• comsat_var_run_t
• 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

---

🧚 FILE CONTEXTS 🧚

SELinux requires files to have an extended attribute to define the file type. every file needs its lil label, it's giving name tags at a party 🎀

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 comsat policy is very flexible, allowing users to set up their comsat processes in as secure a method as possible. yes we said flexible three times, because it IS 💅

🌸 STANDARD FILE CONTEXT 🌸

SELinux defines the file context types for the comsat. If you wanted to store files with these types in different paths, you need to execute the semanage command to specify alternate labeling and then use restorecon to put the labels on disk. like this:

semanage fcontext -a -t comsat_exec_t '/srv/comsat/content(/.*)?'
restorecon -R -v /srv/mycomsat_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies rise 🧚‍♀️

The following file types are defined for comsat:

• comsat_exec_t — set files with the comsat_exec_t type if you want to transition an executable to the comsat_t domain.
• comsat_tmp_t — set files with the comsat_tmp_t type if you want to store comsat temporary files in the /tmp directories.
• comsat_var_run_t — set files with the comsat_var_run_t type if you want to store the comsat 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 chcon is the quick fix and semanage fcontext + restorecon is the forever commitment, okurrr 😭💖

---

🌈 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. yes bestie, a whole GUI if the terminal life isn't your moment 🖥️✨

---

👑 AUTHOR 👑

This manual page was auto-generated using sepolicy manpage. the robots did this one, we just gave it the vibe check 🤖💅

---

🦋 SEE ALSO 🦋

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

---

ok that's the whole page, you ate that 🫶 and for the record, this lil masterpiece is comsat from 26-10-06 — the comsat_selinux(8) of our hearts. mwah 💋💖