oddmu.service

[Unit]
Description=Oddmu
After=network.target
[Install]
WantedBy=multi-user.target
[Service]
Type=simple
Restart=always
DynamicUser=true
MemoryMax=120M
MemoryHigh=100M
ExecStart=/home/oddmu/oddmu
WorkingDirectory=/home/oddmu
Environment="ODDMU_PORT=8080"
Environment="ODDMU_WEBFINGER=1"

# (man "systemd.exec")
ReadWritePaths=/home/oddmu
ProtectHostname=yes
RestrictSUIDSGID=yes
RemoveIPC=yes
MemoryDenyWriteExecute=yes

# Sandboxing options to harden security
NoNewPrivileges=yes
PrivateTmp=yes
PrivateDevices=yes
RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
RestrictNamespaces=yes
RestrictRealtime=yes
DevicePolicy=closed
ProtectSystem=full
ProtectControlGroups=yes
ProtectKernelModules=yes
ProtectKernelTunables=yes
LockPersonality=yes
SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap

# Denying access to capabilities that should not be relevant
# (man "capabilities")
CapabilityBoundingSet=~CAP_RAWIO CAP_MKNOD
CapabilityBoundingSet=~CAP_AUDIT_CONTROL CAP_AUDIT_READ CAP_AUDIT_WRITE
CapabilityBoundingSet=~CAP_SYS_BOOT CAP_SYS_TIME CAP_SYS_MODULE CAP_SYS_PACCT
CapabilityBoundingSet=~CAP_LEASE CAP_LINUX_IMMUTABLE CAP_IPC_LOCK
CapabilityBoundingSet=~CAP_BLOCK_SUSPEND CAP_WAKE_ALARM
CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG
CapabilityBoundingSet=~CAP_MAC_ADMIN CAP_MAC_OVERRIDE
CapabilityBoundingSet=~CAP_NET_ADMIN CAP_NET_BROADCAST CAP_NET_RAW
CapabilityBoundingSet=~CAP_SYS_ADMIN CAP_SYS_PTRACE CAP_SYSLOG