Files
fips/packaging/systemd
Johnathan Corgan fe205e74de Multi-backend DNS configuration for .fips domain (#58)
Replace the resolvectl-only fips-dns.service with a detection script
that configures whichever DNS resolver is available:

1. systemd dns-delegate (systemd >= 258, declarative drop-in)
2. systemd-resolved via resolvectl (most systemd distros)
3. dnsmasq (standalone)
4. NetworkManager with dnsmasq plugin
5. Warning with manual instructions if none found

Service reloads are non-fatal — config is written and the backend
is recorded even if the reload fails, preventing state file cleanup
issues under set -e.

Teardown reads the recorded backend from /run/fips/dns-backend and
reverses the configuration, or cleans up all possible backends if
the state file is missing.

Includes a Docker-based test harness (testing/dns-resolver/test.sh)
covering all five backends across Debian 12, Debian 13, Fedora,
and bare systems.

Fixes #52.
2026-04-11 18:45:17 +01:00
..

FIPS Installation Guide

Quick Start

tar xzf fips-*-linux-*.tar.gz
cd fips-*-linux-*/
sudo ./install.sh

What Gets Installed

File Location
fips (daemon) /usr/local/bin/fips
fipsctl (CLI) /usr/local/bin/fipsctl
fipstop (TUI) /usr/local/bin/fipstop
Configuration /etc/fips/fips.yaml
Identity key /etc/fips/fips.key (auto-generated)
Public key /etc/fips/fips.pub (auto-generated)
systemd unit /etc/systemd/system/fips.service

A system group fips is created for control socket access.

Post-Install Configuration

Edit /etc/fips/fips.yaml before starting the service.

1. Identity

By default, the node generates a new ephemeral identity on each start for privacy. If the node's npub will be published for others to use as a static peer, enable a stable identity by uncommenting persistent: true in the identity section:

node:
  identity:
    persistent: true

On first start with persistence enabled, a keypair is auto-generated and saved:

  • /etc/fips/fips.key (mode 0600) — secret key
  • /etc/fips/fips.pub (mode 0644) — public key (npub)

The same identity is reused on subsequent starts. Alternatively, set node.identity.nsec to use a specific key.

2. Ethernet Transport

If using Ethernet for local mesh discovery, uncomment the ethernet section and set the interface name:

transports:
  ethernet:
    interface: "eth0"
    discovery: true
    announce: true
    auto_connect: true
    accept_connections: true

3. Bluetooth Transport

If using BLE for local mesh discovery, the FIPS binary must be built with the ble feature (enabled by default). BlueZ must be installed and running:

sudo apt install bluez
sudo systemctl enable --now bluetooth

Add your service user to the bluetooth group, or run with CAP_NET_ADMIN + CAP_NET_RAW capabilities.

Configure BLE in the transports section:

transports:
  ble:
    adapter: "hci0"
    advertise: true
    scan: true
    auto_connect: true
    accept_connections: true

4. Static Peers

For bootstrapping over UDP or TCP, add known peers:

peers:
  - npub: "npub1..."
    alias: "gateway"
    addresses:
      - transport: udp
        addr: "217.77.8.91:2121"  # IP or hostname (e.g., "peer.example.com:2121")
    connect_policy: auto_connect

5. DNS Resolver (optional, requires systemd-resolved)

FIPS includes a DNS responder for .fips domain names (port 5354). On systems running systemd-resolved, the installer automatically enables fips-dns.service to route .fips queries to the FIPS resolver.

If systemd-resolved is not running at install time, DNS integration is skipped. To enable it later (after starting systemd-resolved):

sudo systemctl enable --now fips-dns.service

For manual configuration without fips-dns.service:

sudo resolvectl dns fips0 127.0.0.1:5354
sudo resolvectl domain fips0 ~fips

Firewall Ports

Port Protocol Purpose
2121 UDP Peer-to-peer mesh traffic
8443 TCP Inbound peer connections

Service Management

# Start / stop / restart
sudo systemctl start fips
sudo systemctl stop fips
sudo systemctl restart fips

# View logs
sudo journalctl -u fips -f

# Switch to debug logging
sudo systemctl set-environment RUST_LOG=debug
sudo systemctl restart fips

Monitoring

# Quick status
fipsctl show status

# Interactive dashboard
fipstop

# Other queries
fipsctl show peers
fipsctl show links
fipsctl show sessions
fipsctl show routing
fipsctl show transports

Non-Root Access to fipsctl/fipstop

Add your user to the fips group:

sudo usermod -aG fips $USER

Log out and back in for the group change to take effect.

Uninstall

# Remove binaries and service, keep configuration
sudo ./uninstall.sh

# Remove everything including /etc/fips/ and the fips group
sudo ./uninstall.sh --purge