services.netbird.tunnels.<name>.hardened

Hardened service:

• runs as a dedicated user with minimal set of permissions (see caveats),
• restricts daemon configuration socket access to dedicated user group (you can grant access to it with users.users."<user>".extraGroups = [ netbird-‹name› ]),

Even though the local system resources access is restricted:

• CAP_NET_RAW, CAP_NET_ADMIN and CAP_BPF still give unlimited network manipulation possibilites,
• older kernels don't have CAP_BPF and use CAP_SYS_ADMIN instead,

Known security features that are not (yet) integrated into the module:

• 2024-02-14: rosenpass is an experimental feature configurable solely through --enable-rosenpass flag on the netbird up command, see the docs.