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dist: harden systemd service unit #276

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Jul 7, 2022
Merged

dist: harden systemd service unit #276

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32 changes: 32 additions & 0 deletions dist/init/systemd/signaling.service
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Original file line number Diff line number Diff line change
Expand Up @@ -7,5 +7,37 @@ User=signaling
Group=signaling
Restart=on-failure

# Makes sure that /etc/signaling is owned by this service
ConfigurationDirectory=signaling

# Hardening - see systemd.exec(5)
CapabilityBoundingSet=
ExecPaths=/usr/bin/signaling /usr/lib
LockPersonality=yes
MemoryDenyWriteExecute=yes
NoExecPaths=/
NoNewPrivileges=yes
PrivateDevices=yes
PrivateTmp=yes
PrivateUsers=yes
ProcSubset=pid
ProtectClock=yes
ProtectControlGroups=yes
ProtectHome=yes
ProtectHostname=yes
ProtectKernelLogs=yes
ProtectKernelModules=yes
ProtectKernelTunables=yes
ProtectProc=invisible
ProtectSystem=strict
RemoveIPC=yes
RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX
RestrictNamespaces=yes
RestrictRealtime=yes
RestrictSUIDSGID=yes
SystemCallArchitectures=native
SystemCallFilter=@system-service
SystemCallFilter=~ @privileged @resources

[Install]
WantedBy=multi-user.target