Every argon2 run takes 64 MiB and nothing limited how many ran at once,
so parallel sign-in attempts could run the server out of memory (8 at
once used about 600 MB). At most two now run at once; at most 16
sign-ins wait for one, more get HTTP 429. 30 parallel sign-ins peaked
at 275 MB.
A sign-in attempt now counts toward the lockout before its password is
checked, so parallel attempts cannot get past it; a right password
takes its own attempt back. IPv6 addresses are locked out by /64.
With net.ipv6.conf.all.forwarding=1, Linux ignores router announcements
unless accept_ra is 2, so a server that gets its IPv6 route by SLAAC
(e.g. a Raspberry Pi at home) lost IPv6 once the route expired.
The sysctl file now also sets accept_ra=2 for the default and for every
network card and the IPv6 default-route interface, except where
accept_ra is 0. "update" rewrites the file, which fixes existing
installs. A new health check warns while the uplink still has
accept_ra=1.
The signed-in user's profile, password and own app tokens move from the
Settings card to their own page at #/account, ready for more user
functions. The sidebar footer links to it with the user's name. Users
can now set their own note; the page header shows when and from where
the session started, which the server now records. Settings keeps the
Users table, where your own row links to My account.
The single admin account becomes a list of users; config.json moves to
version 2 and the old admin is migrated on first start. Every user is an
admin. Sessions are tied to a user and their password, so deleting a user
or resetting a password signs them out at once. API tokens belong to the
user who made them and go away with that user.
Admins add users with a temporary password and choose whether it must be
changed at first sign-in; until then the API refuses everything but the
password change. Settings gets My account and Users cards, and the token
table shows each token's owner. 'GHOSTWIRE passwd [username]' resets any
user's password. A failed update now also restores config.json, since the
new version may have upgraded it.
The server pings a peer's tunnel address every 30 s and shows the median
of the last 5 minutes in the peer list (with a 1-hour sparkline) and a
24-hour chart on the peer page. Off by default; "active" pings only
while the device sends traffic, "always" keeps the tunnel up.
In a terminal, install now asks for the domain, Let's Encrypt email,
endpoint, WireGuard port and admin password, shows a summary and changes
nothing until confirmed. Re-runs offer the current settings and say how
many devices need a new config when the endpoint or port changes.
Flags still work and skip their question; -y or no terminal skips all
questions. New -port flag sets the WireGuard UDP port. Every value is
checked before the system is touched.
A config can now be handed over as a one-time link, valid for 1 h, 24 h or
7 days and protected by a PIN by default. Keys are made only when the link
is opened; the link works once and is revoked after 5 wrong PINs. Issuing a
new config offers the same choice, and the current config keeps working
until the link is used.
Remove the option to paste a client's public key, in the web UI, the API
and the iOS app.
- The stats sampler records sessions per peer: start, end, address and
traffic. A session ends when the peer goes quiet or is disabled; a new
one starts when the device changes networks. Stored in stats.json and
kept as long as the daily traffic history (max 1000 per peer).
- Country and network operator come from the free DB-IP Lite databases
(CC BY 4.0), downloaded monthly and looked up locally, so peer
addresses never leave the server. Settings → Data retention can switch
this off, which deletes the databases.
- API: GET /peers/{id}/sessions; peer stats include the current location;
settings include the database status.
- Web UI and iOS app: connection history card, location line, country
code in the peer list (web), switch in data retention.
Claude-Session: https://claude.ai/code/session_01RAnLbyQZ5ZTA7KqwXP98nw
- Settings → Data retention: log file size, number of old log files,
hourly and daily traffic history. Stored as log and stats in
config.json, validated, and applied without a restart; lowering a
limit deletes older log files and history after confirmation.
- Traffic history is now pruned by time instead of by bucket count.
- Server page DNS provider list offers only Quad9 and Custom.
Claude-Session: https://claude.ai/code/session_01RAnLbyQZ5ZTA7KqwXP98nw
Single Go binary that manages a WireGuard server based on pivpn's defaults:
- config.json as the single source of truth, reconciled to the kernel via
netlink, wgctrl and its own nftables table (NAT, forward, input)
- web interface (dashboard, peers, peer detail, add peer, server, settings)
and a JSON API for the future iOS app, with session and API-token auth
- client private keys are never stored; configs and QR codes shown once
- per-peer traffic statistics in stats.json, logs in GHOSTWIRE.jsonl
- HTTPS via Let's Encrypt, self-signed, certificate files or off
- self-managing: install, update (restores the old binary on failure),
uninstall and passwd subcommands; systemd unit generated by the binary
Tested end to end on Ubuntu 26.04 (kernel 7.0) at dev.redetzke.aero.
Claude-Session: https://claude.ai/code/session_01RAnLbyQZ5ZTA7KqwXP98nw
Daniel Redetzke