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[Unit]
Description=derper service
Documentation=https://github.com/tailscale/tailscale/tree/main/cmd/derper
Requires=network-online.target
After=network-online.target
[Service]
# Basic Configuration
ExecStartPre=/usr/bin/sh /etc/derper/openssl-cert-gen.sh
ExecStart=/usr/bin/derper $DERPER_ARGS
ExecReload=/usr/bin/kill -HUP $MAINPID
Restart=on-failure
# User and Directory Configuration
DynamicUser=yes
StateDirectory=derper
WorkingDirectory=/var/lib/derper
EnvironmentFile=-/etc/conf.d/derper
# File Permission and Path Protections
ReadOnlyPaths=/etc/derper
ReadOnlyPaths=-/etc/conf.d/derper
ReadWritePaths=/var/lib/derper
# File Descriptor Limit
LimitNOFILE=65535
# Security Settings
NoNewPrivileges=true
LockPersonality=true
ProtectSystem=full
ProtectHome=true
ProtectControlGroups=true
ProtectKernelTunables=true
ProtectKernelModules=true
ProtectHostname=true
MemoryDenyWriteExecute=yes
RestrictNamespaces=yes
RestrictRealtime=yes
PrivateDevices=yes
# Capability Settings
CapabilityBoundingSet=CAP_NET_BIND_SERVICE
AmbientCapabilities=CAP_NET_BIND_SERVICE
[Install]
WantedBy=multi-user.target
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