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[Unit]
Description=Bitwarden Server (Rust Edition)
Documentation=https://github.com/dani-garcia/bitwarden_rs
After=network.target

[Service]
# The user/group bitwarden_rs is run under. the working directory (see below) should allow write and read access to this user/group
User=bitwarden_rs
Group=bitwarden_rs
# The location of the .env file for configuration
EnvironmentFile=/etc/bitwarden_rs.env
# The location of the compiled binary
ExecStart=/usr/bin/bitwarden_rs
# Set reasonable connection and process limits
LimitNOFILE=1048576
LimitNPROC=64

# Prevent bitwarden_rs from doing anything stupid and/or unneccessary.
PrivateTmp=true
PrivateDevices=true

ProtectHome=true
ProtectSystem=strict
ProtectKernelTunables=yes
ProtectKernelModules=yes
ProtectControlGroups=yes

RestrictNamespaces=yes

SystemCallArchitectures=native
SystemCallFilter=@system-service
RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6

# Only allow writes to the following directory and set it to the working directory (user and password data are stored here)
WorkingDirectory=/var/lib/bitwarden_rs
ReadWriteDirectories=/var/lib/bitwarden_rs

# Allow bitwarden_rs to bind ports in the range of 0-1024
AmbientCapabilities=CAP_NET_BIND_SERVICE
# Restrict bitwarden_rs to only this capability
CapabilityBoundingSet=CAP_NET_BIND_SERVICE

[Install]
WantedBy=multi-user.target