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#suppress inspection "DuplicateKeyInSection" for whole file
[Unit]
Description=OpenVPN authenticator
Documentation=https://github.com/jkroepke/openvpn-auth-oauth2
Wants=network-online.target openvpn.service
After=network-online.target openvpn.service openvpn@.service openvpn-server@.service
PartOf=openvpn.service openvpn@.service openvpn-server@.service
[Service]
# Run as an unprivileged user with random user id.
DynamicUser=true
User=openvpn-auth-oauth2-dynamic
Group=openvpn-auth-oauth2-dynamic
SupplementaryGroups=openvpn-auth-oauth2
ExecStart=/usr/bin/openvpn-auth-oauth2 --config ${CONFIG_FILE}
NoExecPaths=/
ExecPaths=/usr/bin/openvpn-auth-oauth2
Environment=CONFIG_FILE=/etc/openvpn-auth-oauth2/config.yaml
EnvironmentFile=-/etc/sysconfig/openvpn-auth-oauth2
#LoadCredential=openvpn-auth-oauth2:/etc/openvpn-auth-oauth2/
#ConfigurationDirectory=openvpn-auth-oauth2
#ConfigurationDirectoryMode=0750
RuntimeDirectory=openvpn-auth-oauth2
ReadWritePaths=-/run/openvpn -/run/openvpn-server
RestartSec=5s
Restart=always
# We don't need write access anywhere.
AmbientCapabilities=
CapabilityBoundingSet=
MemoryDenyWriteExecute=true
NoNewPrivileges=true
LockPersonality=true
PrivateDevices=true
PrivateTmp=true
PrivateUsers=true
ProcSubset=pid
ProtectClock=true
ProtectControlGroups=true
ProtectHome=true
ProtectHostname=true
ProtectKernelLogs=true
ProtectKernelModules=true
ProtectKernelTunables=true
ProtectProc=noaccess
ProtectSystem=strict
RemoveIPC=true
RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
RestrictNamespaces=true
RestrictRealtime=true
RestrictSUIDSGID=true
SystemCallArchitectures=native
SystemCallFilter=@io-event @file-system @basic-io @system-service
SystemCallFilter=~@clock @debug @module @mount @obsolete @privileged @reboot @resources @setuid @swap
SystemCallErrorNumber=EPERM
UMask=0027
[Install]
WantedBy=multi-user.target
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