A malformed FilterAnnounce whose fill ratio produces an implausibly
high false-positive rate is mostly useless for routing and, once
merged into our outgoing filter via bitwise OR, propagates the
saturated state to tree peers one hop per announce tick. A saturated
filter also made estimated_count() return f64::INFINITY, which
compute_mesh_size summed into its cached estimate.
handle_filter_announce now rejects inbound FilterAnnounce whose
derived FPR exceeds `node.bloom.max_inbound_fpr` (new config field,
default 0.05 ≈ fill 0.549 at k=5). Rejection is silent on the wire,
logs at WARN, and increments a new `bloom.fill_exceeded` counter. The
peer's prior stored filter and filter_sequence are left unchanged so
a single rejected announce does not wipe the peer's existing
contribution to aggregation.
After a successful outgoing FilterAnnounce send, a rate-limited WARN
fires if our own filter's FPR exceeds the same cap, surfacing
aggregation drift. Limited to once per 60 seconds via a new
Node.last_self_warn field.
BloomFilter::estimated_count() now takes max_fpr and returns
Option<f64>. Returns None for saturated filters (regardless of cap)
or when the filter's FPR exceeds max_fpr. Callers updated: debug
logs render None as "—", the Debug impl uses f64::INFINITY as "no
cap" and prints "saturated" instead of inf, control-socket JSON
emits null, and compute_mesh_size propagates None into the already-
Option<u64> estimated_mesh_size field.
Implement TCP Wrappers-style peer access control using
/etc/fips/peers.allow and /etc/fips/peers.deny files. Evaluation
order: allow overrides deny, default permit when no files exist.
Three enforcement points: outbound connect (before dialing), inbound
handshake (msg1 receipt, after restart/rekey classification), and
outbound handshake completion (msg2, before peer promotion). Files
support npub, hex pubkey, host alias, and ALL wildcard entries with
automatic mtime-based reload.
Adds fipsctl acl show query, 954-line acl module with unit tests,
and a 6-node Docker integration harness (testing/acl-allowlist/)
exercising insider, outsider, and allowed-remote scenarios. CI
matrix entry included.
Closes#50
Co-authored-by: Johnathan Corgan <johnathan@corganlabs.com>
Adds TreeAnnounce::validate_semantics() called from handle_tree_announce
before any tree-state mutation. Enforces that the ancestry accompanying
a parent declaration conforms to the spanning tree rules:
- first ancestry entry matches the signed sender
- is_root declarations carry a single-entry ancestry
- non-root declarations include the signed parent as the second entry
- the advertised root is the minimum node_addr in the ancestry
Non-conforming announcements are rejected with a warn log and no state
change. Adds unit tests for each rejected shape plus an integration
test covering the full receive path in a two-node tree.
Co-authored-by: Johnathan Corgan <johnathan@corganlabs.com>
Align the macOS example with the repo's existing fips-gateway binary name and override the test image entrypoint so first-run identity generation succeeds.
The unified test image always expects fips-gateway in testing/docker, but testing/scripts/build.sh only copied fips, fipsctl, and fipstop.
Build and stage fips-gateway explicitly so local Docker test builds match CI.
Mesh peers can now reach a configured host:port on the gateway's LAN
via static port-forward rules on fips-gateway. Mirror of the outbound
LAN gateway (IDEA-0079 / TASK-2026-0056).
Config: new gateway.port_forwards list of { listen_port, proto,
target } entries. Targets are SocketAddrV6 — IPv4 is rejected at
parse time. Validation rejects zero listen ports and duplicate
(listen_port, proto) pairs.
NAT: NatManager gains a port_forwards field and set_port_forwards()
setter, rebuilt in the same atomic rustables batch as the address
mappings. Each forward emits a prerouting DNAT rule keyed on
(iifname fips0, nfproto ipv6, l4proto, tcp/udp dport) that rewrites
destination address and port via Nat::with_ip_register +
with_port_register. When any forwards are configured, a single
LAN-side masquerade is installed on (iifname fips0, oifname
lan_interface, nfproto ipv6) so the LAN host sees the gateway as
source and replies flow back through conntrack. This rule is
distinct from the existing oifname fips0 masquerade that serves the
outbound pool.
Binary: fips-gateway validates port_forwards at startup and calls
set_port_forwards after NatManager construction; startup failure
cleans up the nftables table before exiting.
Test: extend testing/static/scripts/gateway-test.sh with Phase 7
that runs a marker HTTP server on the LAN-side client (fd02::20:8080)
and, from the mesh peer, curls the gateway's fips0 address on port
18080 to exercise the full DNAT + LAN masquerade path. The
LAN-side HTTP server is started with 'docker exec -d' plus a
bind-ready poll on ss; 'docker exec bash -c "cmd &"' does not
keep the child alive past the exec session even with nohup.
Test-infra: ci-local.sh now builds/clippies/tests with
--features gateway, matching GitHub CI. Without this the release
fips-gateway binary silently stays stale across runs, since
cargo build --release alone does not compile the gateway bin.
Verified locally: cargo test --features gateway --lib (991 pass),
clippy + fmt clean, full testing/ci-local.sh green (21/21 suites
in 8m36s, including the new gateway Phase 7).
Bump KSXGitHub/github-actions-deploy-aur from v4.1.1 to v4.1.2,
which fixes the runuser invocation that caused "bash: --command:
invalid option" during SSH initialization.
* packaging(aur): fix namcap issues in PKGBUILD
Changes made to fix namcap issues:
1. Added `dbus` to dependencies - the fips binary links against
libdbus-1.so.3, so dbus must be listed as a runtime dependency.
2. Disabled split debug package - added `!debug` to options to prevent
creating a broken -debug package. The debug package was generating
symlinks with incorrect paths, causing namcap errors.
3. Made config file world-readable - changed fips.yaml permissions from
0600 to 0644.
Remaining namcap warnings (can be ignored):
- "Unused shared library '/usr/lib64/ld-linux-x86-64.so.2'" - False
positive. The dynamic linker is required for the binary to run.
- "Dependency libgcc detected and implicitly satisfied" / "gcc-libs
may not be needed" - These are contradictory. The binaries do link
to libgcc_s.so.1, and gcc-libs provides it. Keeping an explicit
dependency is correct.
* Updated based on comments
---------
Co-authored-by: redshift <213178690+1ftredsh@users.noreply.github.com>
In-memory time-series history on the daemon: fast ring (1s × 3600)
plus slow ring (1m × 1440) per metric, covering node-level gauges
(mesh size, tree depth, peer count, active sessions), counters
(parent switches, aggregate bytes/packets in/out), loss rate, and
seven per-peer metrics keyed by NodeAddr (srtt_ms, loss_rate,
bytes_in/out, packets_in/out, ecn_ce). The slow ring is produced by
downsampling the fast ring on minute boundaries with Last / Sum /
Mean aggregation chosen per metric type.
Missing data is first-class. New peers back-fill NaN so every ring
shares a time axis with the node rings; peers absent from a tick
sample NaN (keeps alignment, shows as a visible gap); counter metrics
emit NaN on decrease (new link_stats baseline after reconnect) so
deltas aren't polluted. Peers are evicted 24h after last contact.
Downsampling is NaN-aware: mean skips NaN, all-NaN slow windows stay
NaN. Each history window always returns its full span at the chosen
density (1m / 10m / 1h / 24h), front-padded with NaN when the ring
hasn't yet accumulated enough samples, so switching between windows
feels like zooming in or out rather than clipping to whatever has
arrived. NaN serializes to JSON null via a custom serializer.
Control socket queries:
- show_stats_list enumerates registered metrics plus scope field and
peer_retention_seconds.
- show_stats_history returns one metric's series for a given window
and granularity; accepts optional peer (npub) for per-peer metrics.
- show_stats_all_history returns every metric in a single round trip;
accepts optional peer to fetch all seven per-peer metrics.
- show_stats_peers enumerates tracked peers with lifecycle metadata.
- show_stats_history_all_peers returns one metric across all peers
for grid rendering.
- show_status carries short sparkline windows for the dashboard so
the client can render without extra fetches.
fipsctl gains `stats list`, `stats peers`, and `stats history
<metric>` with `--peer` (hostname or npub) and `--plot` for a Unicode
block sparkline. Plot header reports sample count, granularity,
window, and gap count; NaN renders as a blank cell.
fipstop dashboard grows inline sparklines (peer count, mesh size,
aggregate bytes in/out). A new Graphs tab stacks every metric as an
independent mini plot with its own autoscaled range; each plot uses
btop's braille 2×4 filled-area algorithm (25-entry lookup table
packing two samples per character, per-row gradient coloring for the
characteristic btop vertical-band look, rounded borders with embedded
titles). Three modes are cycled with `m`: Node (node-level stack),
MetricByPeer (small-multiples grid, 1 / 2 / 3 columns by terminal
width), PeerByMetric (existing stack scoped to one peer). `n` / `N`
cycles the mode-specific selector (metric or peer), a selector row
shows the current choice, and Graphs-tab refreshes re-fetch
show_stats_peers so selectors track peer churn. Up / Down scrolls
the stack, Left / Right cycles the window, `g` jumps to the tab.
Implements IDEA-0084 (TASK-2026-0062).
Extend the fipsctl control query interface with visibility into internal
state critical for protocol security auditing, mesh troubleshooting, and
operational monitoring.
New command:
fipsctl show identity-cache
Lists every node identity cached by the daemon (learned from DNS
resolution, peer handshakes, sessions, and static config). Shows
npub, IPv6 address, display name, and LRU age alongside the
configured cache capacity.
Extended queries:
show peers — Noise session counters (send_counter, highest received
counter) for rekey urgency assessment. Per-peer replay suppression
and consecutive decrypt failure counts for active attack detection.
Session index visibility for hijack analysis. Rekey lifecycle
state (in_progress, draining, K-bit epoch).
show sessions — Handshake resend count during establishment for
connectivity debugging. Rekey and session health fields
(session_start, K-bit, coords warmup, drain state) when
established.
show cache — Individual coordinate cache entries with tree
coordinates, depth, path MTU, and age. Enables route-level
debugging by showing exactly which destinations have cached
routes and via what tree path. Renames the top-level count
field from "entries" to "count" for clarity.
show routing — Pending discovery lookups expanded from count to
per-target detail (attempt number, age, last sent). Pending
TUN packet queue depth for backpressure visibility. Connection
retry state per peer (retry count, next attempt, auto-reconnect
flag).
Updates fipstop to match the revised show_cache and show_routing
response schemas. Updates README monitoring section with the complete
fipsctl command list.
Co-authored-by: Johnathan Corgan <johnathan@corganlabs.com>
- Correct the transport matrix: UDP, TCP, and Tor work on Windows
(previously shown as unsupported). Add an OpenWrt column with BLE
disabled due to missing libdbus on the target.
- Mention the `.fips` DNS resolver and outbound LAN gateway in the
Features list, and add the gateway bullet under What works today.
- Reframe the Linux DNS resolver setup: the `.deb` package now
auto-configures the available backend; the manual resolvectl
snippet is shown for tarball and manual installs.
- Expand the Examples section to list all three example deployments
(Nostr relay sidecar, K8s sidecar, macOS WireGuard sidecar) rather
than only the macOS one.
- Refresh Project Structure to include the `fips-gateway` binary,
the full packaging list (macOS .pkg, Windows ZIP, OpenWrt ipk, AUR
in addition to Debian and systemd tarball), and the examples
directory.
- Mention macOS `.pkg` and Windows ZIP/service packaging in the
packaging line of What works today.
Adds entries for master-only work since 0.2.0 that wasn't captured
yet: Windows and macOS platform support, the outbound LAN gateway
and its packaging, the macOS WireGuard sidecar example, multi-backend
.fips DNS configuration, the node.log_level config, the Nostr UDP
hole punch protocol proposal doc, the MMP report interval retune,
the info-to-debug log demotion, the rekey msg1 gate fix, and the
fipstop ratatui try_init change.
Fixed entries only cover bugs present in 0.2.0. Fixes against
master-only code (BLE reliability work, new sidecar port mapping)
are rolled into their respective Added entries rather than listed
as Fixed, per Keep a Changelog conventions.
Captures three fixes landed on maint since 0.2.0 that were not yet
recorded: the bloom-filter greedy-tree fallback fix, auto-connect
reconnect on graceful disconnect (#60), and fipsctl mesh-address
rejection (#61).
When a user passes an fd00::/8 address as the endpoint for a udp,
tcp, or ethernet transport, the CLI previously echoed success while
the daemon silently failed the bind with EAFNOSUPPORT. Mesh ULAs are
destinations inside the mesh, not reachable transport endpoints.
fipsctl now validates the address up front and prints a clear error
with examples, exiting 1 before the control socket call. Other
transports (tor) are not inspected since they legitimately accept
non-IP endpoints.
Covered by inline tests for bare/bracketed/with-port ULA syntaxes,
non-ULA IPv6, IPv4, hostnames, and the transport filter.
Fixes#61.
handle_disconnect() called remove_active_peer without scheduling a
reconnect, orphaning auto-connect peers on a clean upstream shutdown.
Mirror the pattern from the other three peer-removal paths (link-dead,
decrypt failure, peer restart) which all schedule reconnect after
removal.
Adds test_disconnect_schedules_reconnect regression test that verifies
handle_disconnect populates retry_pending for an auto-connect peer.
Visibility of handle_disconnect bumped to pub(in crate::node) for
direct unit-test access.
Fixes#60.
CI format check was failing because the pinned toolchain
rust-toolchain.toml overrides the `dtolnay/rust-toolchain@stable +
rustfmt` action installation — rustup installs rustfmt onto the
stable channel, but when cargo fmt runs inside the repo, rustup
honors the 1.94.1 pin and does an on-demand install that pulls only
rustc/cargo/rust-std.
Declaring components in rust-toolchain.toml ensures the on-demand
install of the pinned toolchain includes rustfmt.
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.
Gate platform-specific code behind cfg attributes and add full Windows
support: TUN device via wintun, TCP control socket on localhost:21210,
Windows Service lifecycle (--install-service/--uninstall-service/--service),
CI build and test matrix, and packaging with ZIP builder and PowerShell
service management scripts.
Key changes:
- Cargo.toml: move tun/libc/rtnetlink behind cfg(unix); add wintun and
windows-service dependencies for Windows
- upper/tun.rs: wintun-based TUN implementation with netsh configuration
for IPv6 address, MTU, and fd00::/8 routing
- control/mod.rs: split into unix_impl/windows_impl; Windows uses TCP on
localhost:21210 with shared connection handler
- bin/fips.rs: refactor main() into run_daemon() accepting a shutdown
signal; add Windows Service support via windows-service crate
- transport/udp/socket.rs: platform-gated modules; Windows uses
tokio::net::UdpSocket (kernel drop count unavailable, returns 0)
- transport/ethernet: gate to cfg(unix); add Windows stub types
- config: platform-conditional default paths (socket, hosts) for Windows
- CI: add windows-latest to build matrix and test-windows job with
cargo-nextest
- packaging/windows: build-zip.ps1, install-service.ps1,
uninstall-service.ps1, and package-windows.yml workflow
- README/docs: Windows build instructions, service management, and
control socket platform differences
Linux and macOS behavior is unchanged.
Add a documented macOS sidecar setup under examples so gateway traffic can be routed through a local Docker WireGuard sidecar for development and testing. Generate persistent FIPS and WireGuard key material on first run and keep those local runtime artifacts out of version control.
The entrypoint HTTP server was binding port 80 but gateway-test.sh
curls port 8000. Maint already had 8000; the wrong port was introduced
during a merge to master.
macOS platform:
- Platform-native TUN interface management with shutdown pipe
- Raw Ethernet transport with macOS socket backend (socket_macos.rs)
- EthernetTransport and TransportHandle::Ethernet ungated from Linux-only
- macOS .pkg packaging (build-pkg.sh, launchd plist, uninstall script)
- CI: macOS build and unit test jobs; x86_64 cross-compiled from
macos-latest via rustup target add x86_64-apple-darwin
Gateway feature flag:
- New opt-in `gateway` Cargo feature activates optional `rustables` dep
- `pub mod gateway` and `Config.gateway` gated behind the feature so
macOS builds never pull in Linux-only nftables bindings
- `fips-gateway` bin has `required-features = ["gateway"]`
- All Linux/OpenWrt/AUR packaging passes `--features gateway`
CI / packaging:
- package-linux, package-macos, package-openwrt now trigger on push to
master/maint/next and on pull requests; release uploads remain tag-gated
- Bloom filter routing fix: fall through to tree routing when no candidate
is strictly closer
- MMP intervals: raise MIN to 1s / MAX to 5s with 5-sample cold-start phase
Add fips-gateway binary to CI artifact and Docker build. Systemd
service unit with After=fips.service dependency and security
hardening. Debian and AUR package entries.
OpenWrt packaging: procd init script managing dnsmasq forwarding,
proxy NDP, RA route advertisements for the virtual IP pool, and a
global IPv6 prefix on br-lan to work around Android suppressing AAAA
queries on ULA-only networks. Sysctl config for IPv6 forwarding.
Gateway enabled by default in OpenWrt config. Ethernet transport
enabled by default.
Default gateway config section (commented out) in common fips.yaml.
Add fips-gateway binary: a separate daemon that allows unmodified LAN
hosts to reach FIPS mesh destinations via DNS-allocated virtual IPs
and kernel nftables NAT.
Gateway DNS resolver: forwarding proxy on [::]:53 that intercepts
.fips queries, forwards to daemon resolver (localhost:5354), allocates
virtual IPs from pool, returns AAAA records. Always sends AAAA upstream
regardless of client query type, returns proper NODATA for non-AAAA.
Virtual IP pool: fd01::/112 pool with state machine lifecycle
(Allocated → Active → Draining → Free), TTL-based reclamation,
conntrack integration for session tracking.
NAT manager: nftables DNAT/SNAT rules via rustables netlink API,
per-mapping rule lifecycle, fips0 masquerade for LAN client source
address rewriting.
Network setup: local pool route, proxy NDP for virtual IPs on LAN
interface, IPv6 forwarding validation.
Control socket at /run/fips/gateway.sock with show_gateway and
show_mappings queries. fipstop Gateway tab with pool summary gauge
and mappings table.
Gateway config section in fips.yaml with pool CIDR, LAN interface,
DNS upstream, TTL, and grace period settings.
Design doc at docs/design/fips-gateway.md.
Integration test (testing/static/scripts/gateway-test.sh): three
containers verifying DNS resolution, end-to-end HTTP, NAT state,
TTL expiration, SERVFAIL fallback, and clean shutdown.
The accept_connections gate in handle_msg1() was at the top of the
function, dropping all inbound msg1 packets on transports that don't
accept new connections (e.g. UDP holepunch). This blocked rekey
handshakes on established links, causing repeated "dual rekey
initiation" log floods.
Move the gate below the existing-peer classification so it only
blocks truly new inbound handshakes from unknown addresses. Rekey
and restart msg1s for established peers are now processed normally.
Fixes#47
PR #49
When bloom filter candidates existed but none were strictly closer to
the destination in tree-coordinate distance, find_next_hop returned
None without trying greedy tree routing. This caused NoRoute failures
in topologies where the tree parent was closer but not a bloom
candidate. Fall through to tree routing when no bloom candidate makes
progress.
Raise the report interval floor from 100ms to 1000ms and ceiling from
2000ms to 5000ms. The old 100ms floor produced ~600 reports per 60s
parent evaluation cycle — far more than the ~10 needed for EWMA
convergence. The new floor yields ~60 reports/cycle, still well above
the convergence threshold, while reducing BLE overhead by 10×.
Add cold-start transition: first 5 SRTT samples use the 200ms floor
for fast initial convergence, then switch to the 1000ms steady-state
floor. Session-layer intervals unchanged (500ms–10000ms).
Wait for all nodes to reach their expected peer counts instead of
only checking a single node. This prevents false failures on slower
CI runners where remote nodes (especially node E in mesh/chain
topologies) take longer to establish all links.
Wait for all nodes to reach their expected peer counts instead of
only checking a single node. This prevents false failures on slower
CI runners where remote nodes (especially node E in mesh/chain
topologies) take longer to establish all links.
- Add package-linux.yml: builds tarball and .deb for x86_64 and aarch64
on v* tag push, uploads artifacts to GitHub release with checksums
- Make build-tarball.sh target-aware: --target, --version, --arch, --no-build
- Make build-deb.sh target-aware: --target, --version, --no-build
- Configurable strip binary via STRIP env var
