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OpenConnect VPN client

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# Download

Released versions of OpenConnect are available from the FTP site, and also over HTTP:

- `ftp://ftp.infradead.org/pub/openconnect/`
- `https://www.infradead.org/openconnect/download/`

Release tarballs (since 3.13) are signed with the PGP key with fingerprint BE07 D9FD 5480 9AB2 C4B0 FF5F 6376 2CDA 67E2 F359.

The latest release is OpenConnect v9.12 (PGP signature), released on 2023-05-20 with the following changelog:

- Fix FreeBSD build and tests.
- Add `libopenconnect5.symbols` file for Debian-style packaging (discussion).
- Explicitly reject overly long tun device names.
- Work around ambiguity between `<json.h>` from json-parser vs json-c (!476).
- Fix symbol versioning for `openconnect_set_sni()`.
- Increase maximum input size from `stdin` (#579).
- Ignore 0.0.0.0 as NBNS address (!446, vpnc-scripts#58).
- Fix Mac OS build of `os-tcp-mtu` tool (#612).

For older releases and change logs, see the changelog page.

## Latest sources

The latest source code is available from the git repository at:

- `git://git.infradead.org/users/dwmw2/openconnect.git`
  or browsable in gitweb at:
- https://git.infradead.org/users/dwmw2/openconnect.git