Martin Minkus
4c5862376c
ensurePFAnchorRef reconstructs the main ruleset from "pfctl -sn" and "pfctl -sr" output and reloads it with "pfctl -f -". That output names any table a rule references but never prints its contents, so the reconstructed ruleset re-declares every table as empty. Reloading it silently drops the addresses of any table the operator populates out-of-band -- a "persist file" table, "pfctl -T add", pfctl's own automatic tables for interface groups -- and every rule referencing that table then matches nothing. That is a quiet, security-relevant failure: a ruleset whose "pass ... from <trusted>" rules still exist but match no addresses looks fine in "pfctl -sr". There is no way to insert an anchor reference into a running ruleset without a reload, so detect the case and refuse, pointing the operator at the durable fix (putting the anchor references in /etc/pf.conf, where they survive reboots and pf reloads anyway). Boxes that already have the anchor references configured are unaffected: ensurePFAnchorRef returns early before reaching this check. Updates #5573 Change-Id: I6efa9a63e1322af2ec8fd986a774ed76c5d5766e Signed-off-by: Martin Minkus <martin.minkus@sonic.com>
Tailscale
Private WireGuard® networks made easy
Overview
This repository contains the majority of Tailscale's open source code.
Notably, it includes the tailscaled daemon and
the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows,
macOS, and to varying degrees
on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's
code, but this repo doesn't contain the mobile GUI code.
Other Tailscale repos of note:
- the Android app is at https://github.com/tailscale/tailscale-android
- the Synology package is at https://github.com/tailscale/tailscale-synology
- the QNAP package is at https://github.com/tailscale/tailscale-qpkg
- the Chocolatey packaging is at https://github.com/tailscale/tailscale-chocolatey
For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.
Using
We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.
Other clients
The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.
Building
We always require the latest Go release, currently Go 1.27. (While we build releases with our Go fork, its use is not required.)
go install tailscale.com/cmd/tailscale{,d}
If you're packaging Tailscale for distribution, use build_dist.sh
instead, to burn commit IDs and version info into the binaries:
./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled
If your distro has conventions that preclude the use of
build_dist.sh, please do the equivalent of what it does in your
distro's way, so that bug reports contain useful version information.
Bugs
Please file any issues about this code or the hosted service on the issue tracker.
Contributing
PRs welcome! But please file bugs. Commit messages should reference bugs.
We require Developer Certificate of
Origin
Signed-off-by lines in commits.
See commit-messages.md (or skim git log) for our commit message style.
About Us
Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:
- https://github.com/tailscale/tailscale/graphs/contributors
- https://github.com/tailscale/tailscale-android/graphs/contributors
Legal
WireGuard is a registered trademark of Jason A. Donenfeld.