When reverse path filtering is in strict mode on Linux, using an exit
node blocks all network connectivity. This change adds a warning about
this to `tailscale status` and the logs.
Example in `tailscale status`:
```
- not connected to home DERP region 22
- The following issues on your machine will likely make usage of exit nodes impossible: [interface "eth0" has strict reverse-path filtering enabled], please set rp_filter=2 instead of rp_filter=1; see https://github.com/tailscale/tailscale/issues/3310
```
Example in the logs:
```
2024/02/21 21:17:07 health("overall"): error: multiple errors:
not in map poll
The following issues on your machine will likely make usage of exit nodes impossible: [interface "eth0" has strict reverse-path filtering enabled], please set rp_filter=2 instead of rp_filter=1; see https://github.com/tailscale/tailscale/issues/3310
```
Updates #3310
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
Tailscaled becomes inoperative if the Tailscale Tunnel wintun adapter is abruptly removed.
wireguard-go closes the device in case of a read error, but tailscaled keeps running.
This adds detection of a closed WireGuard device, triggering a graceful shutdown of tailscaled.
It is then restarted by the tailscaled watchdog service process.
Fixes#11222
Signed-off-by: Nick Khyl <nickk@tailscale.com>
The WinTun adapter may have been removed by the time we're closing
the dns.windowsManager, and its associated interface registry key might
also have been deleted. We shouldn't use winutil.OpenKeyWait and wait
for the interface key to appear when performing a cleanup as a part of
the windowsManager shutdown.
Updates #11222
Signed-off-by: Nick Khyl <nickk@tailscale.com>
Starts using peer capabilities to restrict the management client
on a per-view basis. This change also includes a bulky cleanup
of the login-toggle.tsx file, which was getting pretty unwieldy
in its previous form.
Updates tailscale/corp#16695
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
This change adds a new apiHandler struct for use from serveAPI
to aid with restricting endpoints to specific peer capabilities.
Updates tailscale/corp#16695
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
- add a clientmetric with a counter of TCP forwarder drops due to the
max attempts;
- fix varz metric types, as they are all counters.
Updates #8210
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
Instead of modeling remote WebDAV servers as actual
webdav.FS instances, we now just proxy traffic to them.
This not only simplifies the code, but it also allows
WebDAV locking to work correctly by making sure locks are
handled by the servers that need to (i.e. the ones actually
serving the files).
Updates tailscale/corp#16827
Signed-off-by: Percy Wegmann <percy@tailscale.com>
That's already the default. Avoid the overhead of writing it on one
side and reading it on the other to do nothing.
Updates #cleanup (noticed while researching something else)
Change-Id: I449c88a022271afb9be5da876bfaf438fe5d3f58
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
If a client socket is remotely lost but the client is not sent an RST in
response to the next request, the socket might sit in RTO for extended
lengths of time, resulting in "no internet" for users. Instead, timeout
after 10s, which will close the underlying socket, recovering from the
situation more promptly.
Updates #10967
Signed-off-by: James Tucker <james@tailscale.com>
I missed a case in the earlier patch, and so we're still sending 15s TCP
keepalive for TLS connections, now adjusted there too.
Updates tailscale/corp#17587
Updates #3363
Signed-off-by: James Tucker <james@tailscale.com>
This appears to be one of the contributors to this CI target regularly
entering a bad state with a partially written toolchain.
Updates #self
Signed-off-by: James Tucker <james@tailscale.com>
We don't need a log line every time defaultRoute is read in the good
case, and we now only log default interface updates that are actually
changes.
Updates #3363
Signed-off-by: James Tucker <james@tailscale.com>
Update vite to 5.1.4, and vitest to 1.3.1 (their latest versions). Also
remove vite-plugin-rewrite-all as this is no longer necessary with vite
5.x and has a dependency on vite 4.x.
Updates https://github.com/tailscale/corp/issues/17715
Signed-off-by: Mario Minardi <mario@tailscale.com>
This adds details on how to configure node attributes to allow
sharing and accessing shares.
Updates tailscale/corp#16827
Signed-off-by: Percy Wegmann <percy@tailscale.com>
An increasing number of users have very large subnet route
configurations, which can produce very large amounts of log data when
WireGuard is reconfigured. The logs don't contain the actual routes, so
they're largely useless for diagnostics, so we'll just suppress them.
Fixestailscale/corp#17532
Signed-off-by: James Tucker <james@tailscale.com>
Update plugin-react-swc to the latest version (3.6.0) ahead of updating vite to 5.x.
Updates https://github.com/tailscale/corp/issues/17715
Signed-off-by: Mario Minardi <mario@tailscale.com>
Update vite-plugin-svgr to the latest version (4.2.0) ahead of updating
vite to 5.x. This is a major version bump from our previous 3.x, and
requires changing the import paths used for SVGs.
Updates https://github.com/tailscale/corp/issues/17715
Signed-off-by: Mario Minardi <mario@tailscale.com>
The derper sends an in-protocol keepalive every 60-65s, so frequent TCP
keepalives are unnecessary. In this tuning TCP keepalives should never
occur for a DERP client connection, as they will send an L7 keepalive
often enough to always reset the TCP keepalive timer. If however a
connection does not receive an ACK promptly it will now be shutdown,
which happens sooner than it would with a normal TCP keepalive tuning.
This re-tuning reduces the frequency of network traffic from derp to
client, reducing battery cost.
Updates tailscale/corp#17587
Updates #3363
Signed-off-by: James Tucker <james@tailscale.com>
Updates ENG-2133. Adds the ResetToDefaults visibility policy currently only available on macOS, so that the Windows client can read its value.
Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
So derpers can check an external URL for whether to permit access
to a certain public key.
Updates tailscale/corp#17693
Change-Id: I8594de58f54a08be3e2dbef8bcd1ff9b728ab297
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This allows coverage from tests that hit multiple packages at once
to be reflected in all those packages' coverage.
Updates #cleanup
Signed-off-by: Percy Wegmann <percy@tailscale.com>
Setting a user timeout will be a more practical tuning knob for a number
of endpoints, this provides a way to set it.
Updates tailscale/corp#17587
Signed-off-by: James Tucker <james@tailscale.com>
So we can probe load balancers by their unique DNS name but without
asking for that cert name.
Updates tailscale/corp#13050
Change-Id: Ie4c0a2f951328df64281ed1602b4e624e3c8cf2e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
From a packet trace we have seen log connections being closed
prematurely by the client, resulting in unnecessary extra TLS setup
traffic.
Updates #3363
Updates tailscale/corp#9230
Updates tailscale/corp#8564
Signed-off-by: James Tucker <james@tailscale.com>
This fixes an infinite loop caused by the configuration of
systemd-resolved on Amazon Linux 2023 and how that interacts with
Tailscale's "direct" mode. We now drop the Tailscale service IP from the
OS's "base configuration" when we detect this configuration.
Updates #7816
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I73a4ea8e65571eb368c7e179f36af2c049a588ee
Adds logic in gocross to detect environment variables and pass the right flags so that the backend can be built with the visionOS SDK.
Signed-off-by: Andrea Gottardo <andrea@tailscale.com>
Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
Instead of constructing the `ip:port` string ourselves, use
netip.AddrPortFrom which handles IPv6 correctly.
Updates #11164
Signed-off-by: Will Norris <will@tailscale.com>
Small fix to make sure doctor API endpoint returns correctly - I spotted it when checking my tailscaled node and noticed it was handled slightly different compare to the rest
Signed-off-by: San <santrancisco@users.noreply.github.com>
Updates #cleanup
NixOS packages are immutable and attempts to update via our tarball
mechanism will always fail as a result. Instead we now direct users to
update their nix channel or nixpkgs flake input to receive the latest
Tailscale release.
Signed-off-by: Patrick O'Doherty <patrick@tailscale.com>
This package uses a count-min sketch and a heap to track the top K items
in a stream of data. Tracking a new item and adding a count to an
existing item both require no memory allocations and is at worst
O(log(k)) complexity.
Change-Id: I0553381be3fef2470897e2bd806d43396f2dbb36
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Looking at profiles, we spend a lot of time in winipcfg.LUID.DeleteRoute
looking up the routing table entry for the provided RouteData.
But we already have the row! We previously obtained that data via the full
table dump we did in getInterfaceRoutes. We can make this a lot faster by
hanging onto a reference to the wipipcfg.MibIPforwardRow2 and executing
the delete operation directly on that.
Fixes#11123
Signed-off-by: Aaron Klotz <aaron@tailscale.com>
