7 Commits

Author SHA1 Message Date
Johnathan Corgan
507086e39d docs: refresh tutorials, how-to, design, reference, and examples for v0.4.0
Pre-cut documentation pass for the 0.4.0 release, verified against current source.

Corrections:
- fipsctl: stale 'show identities'/'show node' -> 'show status'
  (host-a-service, run-as-unprivileged-user)
- mesh address derivation: first 16 bytes of SHA-256(pubkey) with the leading
  byte set to 0xfd, not a fixed fd97: prefix (reach-mesh-services,
  ipv6-adapter-walkthrough)
- gateway control socket mode 0660 -> 0770 (troubleshoot-gateway)
- Tor example: add advertised_port: 8443 so the published port matches the
  prose (enable-nostr-discovery)
- bloom mesh-size estimate rewritten to the OR-union-of-peer-filters algorithm;
  plus mtu deep-link, gateway pool wording, and a NAT failure-mode line
- examples: delete orphaned nostr-rs-relay config, accept inbound to the local
  8443 TCP listener, fix fd::/8 -> fd00::/8 typos, dotless wireguard alias

Additions:
- new Nym mixnet transport section (fips-transport-layer) and the architecture
  transport list
- new LAN/mDNS discovery section (fips-nostr-discovery)
- reference docs: Nym transport, LAN discovery, and new control/stats surfaces;
  drop ble from the connect transport list
2026-06-14 15:14:05 +00:00
Arjen
733ee512d3 chore: replace real IPs in docs and configs with placeholders
Operator-facing IPs in user-visible configs/docs (examples, tutorials,
packaging, sidecar templates) are now the resolvable hostnames of the
public test fleet (test-us01.fips.network, etc.) so they keep working
without baking specific addresses into examples.

Doc-comment and test fixtures in src/config/transport.rs use RFC 5737
TEST-NET-2 (198.51.100.1) so they cannot accidentally point at a real
host.

Also resyncs the openwrt-ipk fips.yaml with the common reference
(merge from master) and applies the same DNS-name swap there.
2026-05-11 18:43:06 +01:00
Johnathan Corgan
77fdd52fe0 docs: reviewer feedback pass on Nostr-discovery surface
Walk through reviewer feedback on the Nostr-discovery docs and
land 18 items.

Bulk patterns:

- `external_addr` / `public: true` semantics consistently
  misdescribed. The advert path is gated on `cfg.is_public()`;
  inside that branch the daemon picks an address by precedence
  (`external_addr`, non-wildcard `bind_addr`, STUN). The docs
  treated `public: true` and `external_addr` as alternatives when
  they are stacked: `public: true` is the master switch and
  `external_addr` populates the address inside it. Reconciled
  across `enable-nostr-discovery.md` and `advertise-your-node.md`:
  add `public: true` to the `external_addr` examples; replace
  "STUN as a logging cross-check" with "STUN is skipped entirely";
  fix "neither flag is needed" for direct public bind (both flags
  still required); make the publish-tutorial Step 3 conditional
  on the chosen Step 2 path (STUN runs only on the `public: true`
  path); rewrite the troubleshooting "wrong public IP advertised"
  bullet with two coherent fixes.

- `udp:nat` overpromised as a symmetric-NAT solution. Symmetric
  NAT on either side typically defeats the punch. Reframe
  `udp:nat` as best-effort hole-punching for nodes without a
  directly reachable UDP endpoint in the how-to, the publish
  tutorial (intro, callout, section heading rewrite from "If
  you're behind symmetric NAT" to "If your direct UDP advert
  isn't reachable"), the consume tutorial's "What's next"
  pointer, and `tutorials/README.md`. Promote reachability over
  named NAT classes: STUN can confirm the public IP but not that
  the listener-port mapping is open.

- YAML "silently ignores unknown keys" is wrong. Config parser
  rejects unknown fields via `serde(deny_unknown_fields)` on the
  per-section structs; misspelled fields refuse the daemon's
  start with a parse-error line in the journal. Fixed in the
  publish tutorial's troubleshooting and the open-discovery
  tutorial's `policy` typo bullet.

Mechanical fixes:

- Repoint stale anchors. `getting-started.md` and
  `configuration.md` linked to `#installation` / `#inspect` on
  the README; the README has no such headings. Repoint to
  `#quick-start` and `cli-fipsctl.md`. Two stale anchors in the
  publish tutorial pointing at non-existent sub-scenarios in the
  how-to (`#sub-scenario-2c-...`,
  `#sub-scenario-2b-tor-onion-node`) repointed to the correct
  anchors.

- Drop the `fipsctl show status` claim from the open-discovery
  troubleshooting bullet (`show_status` doesn't include
  `discovery.nostr.policy`). Replace with daemon startup logs.

- Fix the `advertise: false` parenthetical in the consume-only
  tutorial (`default_advertise()` returns `true`; we set `false`
  explicitly for the consume-only path).

- Drop the "supplies a relay list" overstatement in two
  activation paragraphs (the how-to and the design doc). Default
  relay / STUN-server lists ship in the config; both are
  optional overrides.

- Add the missing `transports.udp.public` entry to the
  open-discovery tutorial's prerequisites checklist. Tutorial
  users coming out of advertise-your-node could be on either the
  direct-UDP (`public: true`) or `udp:nat` (`public: false`)
  path; list both.

Files: docs/getting-started.md, docs/reference/configuration.md,
docs/how-to/enable-nostr-discovery.md, docs/tutorials/README.md,
docs/tutorials/advertise-your-node.md,
docs/tutorials/resolve-peers-via-nostr.md,
docs/tutorials/open-discovery.md,
docs/design/fips-nostr-discovery.md.
2026-05-10 21:56:09 +00:00
Johnathan Corgan
53ad528f7d fipstop: add "Listening on fips0" panel to Node tab
Surfaces local services reachable from the mesh, paired with their
current `inet fips` baseline filter classification. Lands to the
right of the existing TUN section in the Traffic block.

A new daemon control query `show_listening_sockets` returns IPv6
listeners bound to either `::` (wildcard) or the node's fd00::/8
address, each classified as Accept / Drop / Unknown / NoFirewall
against the running inbound chain. fipstop renders the result as a
table beside the Traffic counters: Accept rows in default White,
Drop / Unknown in DarkGray, a yellow banner above the table when
`fips-firewall.service` is inactive, and a trailing `*` on
wildcard binds to remind the operator the bind is not
fips0-specific.

Daemon side:

- `src/control/listening.rs` walks `/proc/net/tcp6` and
  `/proc/net/udp6` via the procfs crate (LISTEN state for TCP,
  wildcard remote for UDP), filters to fips0-reachable binds, and
  resolves inodes to PID / comm via `/proc/<pid>/fd`.

- `src/control/firewall_state.rs` shells out to
  `nft -j list table inet fips` and walks the inbound chain.
  Recognises canonical accepts (`tcp/udp dport N accept`,
  `dport { ... } accept`, `dport A-B accept`), the iifname-scoping
  line, conntrack and icmpv6 lines (skipped). Any rule with
  unrecognised matchers (saddr filters, jumps, daddr filters) or
  non-terminal verdicts forces Unknown classification for the
  ports it references. Eleven unit tests cover the classification
  logic; the listening enumerator carries a /proc-parsing test of
  its own.

- `show_listening_sockets` emits
  `{fips0_addr, firewall_active, sockets[]}` with per-row
  `{proto, local_addr, port, pid, process, filter, wildcard_bind}`.

fipstop side:

- `src/bin/fipstop/ui/dashboard.rs` splits the Traffic block into
  a 50/50 horizontal layout; the existing TUN + Forwarded panel
  occupies the left half.

- `src/bin/fipstop/ui/listening.rs` renders the right half.

- `main.rs` fetches the new query each tick when the Node tab is
  active. Errors are non-fatal: an old daemon without the query
  leaves the payload at None and the panel renders "loading...".

`Cargo.toml` gains `procfs = "0.18"` on the Linux target. IPv4
listeners are not enumerated — fips0 is IPv6-only.

Folded in: revert the default-socket lookup from writability-probe
back to existence-based selection. The previous tempfile-probe on
`/run/fips` silently steered fipstop / fipsctl onto an XDG path
the daemon never bound for any user in the `fips` group whose
shell session had not yet picked up the supplementary group (no
re-login after `usermod -aG`). `XDG_RUNTIME_DIR` is set on every
modern systemd-managed user session, so this hit the common case.
The kernel checks actual group membership at `connect(2)`, so a
user who genuinely cannot connect now gets a clear `EACCES`
rather than a silent path mismatch. Drops the now-unused
`is_writable_dir` helper. `XDG_RUNTIME_DIR` existence validation
is preserved.

Documentation:

- `docs/reference/cli-fipstop.md` — Node-tab row updated, new
  "Listening on fips0 panel" section.
- `docs/reference/control-socket.md` — `show_listening_sockets`
  added to the read-only queries table.
- `docs/how-to/enable-mesh-firewall.md` — new "Verify with
  fipstop" section.
- `docs/tutorials/host-a-service.md` — fipstop callouts at
  Steps 3, 5, 6 + Troubleshooting bullet + wildcard-bind reminder
  under "What you've learned".
- `CHANGELOG.md` — new bullet under `Added / Operator Tooling`,
  resolver `Fixed` entry rewritten to describe the
  existence-based final shape.
2026-05-08 21:36:42 +00:00
Johnathan Corgan
e4f37082c2 docs: gateway tutorial review feedback
Two small improvements to the OpenWrt gateway deploy tutorial:

- Add a router-side ping step at the top of Step 4 (post-gateway-start
  client test). Confirms the router itself reaches the mesh before
  bringing the LAN segment into the diagnosis: if this fails the
  troubleshooting target is the daemon / mesh side; if it succeeds
  and the LAN-client test below fails, the target is the LAN segment
  (proxy_ndp, RA pool route, or DNS forwarding through dnsmasq).

- Mark the inbound port-forward section heading as Optional. The
  outbound half is the steady-state use of a gateway and applies to
  every deployment; the inbound port-forward half is a per-service
  opt-in that many operators won't need.
2026-05-08 14:52:33 +00:00
Johnathan Corgan
0fcf0f6f8f gateway: change dns.listen default to [::1]:5353
The gateway is designed for systems already serving DHCP and DNS to
a LAN segment (canonically an OpenWrt AP). On those systems port 53
is already taken by the existing resolver, so the prior `[::]:53`
default conflicted with the gateway's intended deployment target out
of the box.

The OpenWrt ipk previously overrode this in its packaged config as a
workaround; matching the source default to what the canonical
deployment actually wants makes the override redundant and removes a
foot-gun for fresh manual Linux-host installs. The redundant
`dns.listen` line in `packaging/openwrt-ipk/files/etc/fips/fips.yaml`
is dropped along with this change.

Operators on a host without a pre-existing resolver on port 53 can
opt back into the wildcard bind by setting `dns.listen: "[::]:53"`
explicitly. The new default binds IPv6 loopback only — Linux IPv6
sockets bound to explicit `::1` do not accept v4-mapped traffic, so
forwarders that reach the gateway over IPv4 loopback need to be
pointed at an explicit IPv4 listen address instead.

Touches the gateway config struct and its default-value test, the
commented-out gateway example in the Debian common fips.yaml, the
OpenWrt ipk config (override removed), the gateway reference /
how-to / design / tutorial / troubleshoot docs, and a CHANGELOG
entry under [Unreleased] -> Changed.
2026-05-08 14:02:05 +00:00
Johnathan Corgan
5abf9a9325 docs: four-section /docs/ restructure with new-user content, accuracy pass, and gateway feature-set rewrite
Restructures /docs/ by reader purpose (tutorials, how-to,
reference, design), adds the new-user-progression and
operator-recipe content the prior layout lacked, runs an
accuracy pass against current source across the pre-existing
design docs, and rewrites the gateway feature-set documentation
end-to-end around its actual operational profile (a niche
feature designed for systems already serving DHCP/DNS to a
LAN, with two independent halves — outbound LAN→mesh, inbound
mesh→LAN — sharing one nftables table, one binary, and one
control socket). Top-level README and getting-started rewritten
around two equally-weighted deployment modes (overlay on
existing IP networks; ground-up over non-IP transports).

## Additions

- 11 new tutorials in docs/tutorials/: an 8-step new-user
  progression from single-daemon test-mesh peering through
  to a ground-up two-device mesh, an IPv6-adapter side-trip
  walkthrough, an Advanced Tutorials index, and a hand-held
  OpenWrt walk-through for fips-gateway deployment that
  exercises both halves of the feature.
- 12 new how-tos in docs/how-to/: firewall activation,
  Nostr discovery (resolve / advertise / open across five
  scenarios), Tor onion (directory + control_port modes),
  UDP buffer tuning, unprivileged-user setup, persistent
  identity, host aliases, Bluetooth LE peering, MTU
  diagnostics, manual Linux-host gateway deployment (covers
  both halves), gateway troubleshooting (organised by half),
  and a section index.
- 9 new reference docs in docs/reference/: configuration,
  wire formats, control-socket protocol, four CLI references
  (fips, fipsctl, fipstop, fips-gateway), security posture
  matrix, and Nostr events catalog. Configuration and
  wire-formats are renamed-and-extended from prior design/
  versions; the other seven are net-new.
- 6 new design docs: fips-concepts, fips-architecture, and
  fips-prior-work split out of the deleted fips-intro.md;
  consolidated fips-mmp and fips-mtu aggregations; and a
  new generic port-advertisement-and-nat-traversal doc
  (Nostr-signaled port advertisement plus UDP NAT-traversal
  protocol, FIPS as an example implementation, suitable for
  eventual NIP submission).
- Top-level docs/getting-started.md walking through the
  binary-installer-only Install story.
- packaging/common/hosts pre-populated with the eight public
  test-mesh nodes so shortnames resolve out of the box on
  every fresh install.

## Changes

- 23 wire-format diagrams relocated to reference/diagrams/
  alongside the wire-formats move.
- 4 design diagrams corrected against source code
  (fips-protocol-stack, fips-identity-derivation,
  fips-coordinate-discovery, fips-routing-decision).
- 10 pre-existing design docs reconciled with current
  source. Numeric corrections: stale link-MMP report bounds
  (now [1s, 5s] with 200 ms cold-start floor); UDP default
  MTU (now 1280, IPv6 minimum); node_addr formula
  (SHA-256(pubkey)[..16]); Noise patterns (IK at link, XK
  at session); peer-ACL semantics (strict allowlist requires
  ALL in peers.deny); daemon DNS upstream ([::1]:5354);
  on-the-wire bloom-filter size (1,071 bytes); obsolete
  Cargo-feature references (PR #79 dropped them) removed.
- Transport framing tightened across the docs: TCP is for
  UDP-filtered networks (not NAT traversal); Tor is a
  deployment mode (not failover); WebSocket dropped (not a
  shipped FIPS transport); WiFi promoted to Implemented via
  Ethernet in infrastructure mode; classic-Bluetooth row
  removed (BLE is the only Bluetooth-mode transport).
- docs/design/fips-gateway.md rewritten end-to-end to lead
  with the niche-feature framing and the two-halves
  structure. Title moved from "FIPS Outbound LAN Gateway"
  to "FIPS Gateway"; architecture section describes the
  common machinery (the fips-gateway service, the nftables
  table, the control socket) before splitting into separate
  "Outbound Half" and "Inbound Half" sections of equal
  weight; security considerations split per-half; no Future
  Work section (speculative directions live in the project
  tracker, not in protocol design docs). Inbound port
  forwarding is a first-class half rather than a buried
  "Implemented Extensions" subsection.
- Gateway terminology unified across all gateway docs as a
  separate Linux service running alongside the fips daemon
  (its own systemd unit / OpenWrt init script). Container-
  pattern terms (sidecar) are reserved for the
  Docker/Kubernetes sidecar deployment examples — the
  testing/sidecar/ tree, examples/k8s-sidecar/,
  examples/sidecar-nostr-relay/,
  examples/wireguard-sidecar-macos/, and the related
  CHANGELOG / top-level README entries — where the term
  carries its standard container meaning.
- Net-new design body content: rekey section in
  fips-mesh-layer (Noise IK msg1/msg2 over the established
  link, K-bit cutover, drain window, smaller-NodeAddr-wins
  tie-breaker on dual-init); Mesh Size Estimation and
  Antipoison FPR Cap sections in fips-bloom-filters;
  Mesh-Interface Query Filter subsection in
  fips-ipv6-adapter; failure-suppression knobs and clock-
  skew tolerance in fips-nostr-discovery; loop-rejection
  and mid-chain ancestor swap added to spanning-tree
  propagation / stability rules; Priority Chain in
  fips-mesh-operation renumbered to match the
  routing-decision diagram.
- Top-level README: dropped the stale nostr-discovery
  cargo-feature parenthetical. docs/README.md and the four
  section READMEs (tutorials, how-to, reference, design)
  refreshed for the new structure; index rows reflect both
  halves of the gateway feature and the new fips-gateway
  CLI reference.
- Cargo.toml [package.metadata.deb] assets path updated for
  the fips-security.md move; .gitignore /reference/ rule
  anchored to repo root so docs/reference/ is trackable.
- packaging/openwrt-ipk/files/etc/fips/fips.yaml
  configuration-doc URL updated to the new
  docs/reference/configuration.md location.

## Deletions

- docs/design/fips-intro.md (split into the three new intro
  design docs).
- docs/design/document-relationships.svg (orphan, no longer
  referenced).
- docs/proposals/ tree removed; the only proposal it
  contained (the Nostr UDP hole-punch protocol) was
  rewritten as the new generic
  design/port-advertisement-and-nat-traversal.md.
2026-05-08 03:02:12 +00:00