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Hello plaisthos,
I'd like you to reexamine a change. Please visit
http://gerrit.openvpn.net/c/openvpn/+/1032?usp=email
to look at the new patch set (#5).
Change subject: Changes.rst: Collect, fix, and improve entries for 2.7 release
......................................................................
Changes.rst: Collect, fix, and improve entries for 2.7 release
Change-Id: I80a14b77fcc2fabf51af9f2d5ea0c36362cccb91
Signed-off-by: Frank Lichtenheld <fr...@lichtenheld.com>
---
M Changes.rst
1 file changed, 130 insertions(+), 34 deletions(-)
git pull ssh://gerrit.openvpn.net:29418/openvpn refs/changes/32/1032/5
diff --git a/Changes.rst b/Changes.rst
index e297334..eb3d65b 100644
--- a/Changes.rst
+++ b/Changes.rst
@@ -2,25 +2,58 @@
==========================
New features
------------
-TLS alerts
- OpenVPN 2.7 will send out TLS alerts to peers informing them if the TLS
- session shuts down or when the TLS implementation informs the peer about
- an error in the TLS session (e.g. mismatching TLS versions). This improves
- the user experience as the client shows an error instead of running into
- a timeout when the server just stops responding completely.
+Multi-socket support for servers
+ OpenVPN servers now can listen on multiple sockets at the same time.
+ Multiple ``--local`` statements in the configuration can be used to
+ configure this. This way the same server can e.g. listen for UDP
+ and TCP connections at the same time, or listen on multiple addresses
+ and/or ports.
-Support for tun/tap via unix domain socket and lwipovpn support
- To allow better testing and emulating a full client with a full
- network stack OpenVPN now allows a program executed to provide
- a tun/tap device instead of opening a device.
+Client implementations for DNS options sent by server for Linux/BSD
+ Linux and BSD versions of OpenVPN now ship with a default ``dns-updown``
+ script that implements proper handling of DNS configuration sent
+ by the server. The scripts should work on systems that use
+ ``systemd`` or ``resolveconf`` to manage the DNS setup, as well as
+ raw ``/etc/resolv.conf`` files. However, the exact features supported
+ will depend on the configuration method. On Linux this should usually
+ mean that split-DNS configurations are supported out-of-the-box now.
- The co-developed lwipovpn program based on lwIP stack allows to
- simulate full IP stack and an OpenVPN client using
- ``--dev-node unix:/path/to/lwipovpn`` can emulate a full client that
- can be pinged, can serve a website and more without requiring any
- elevated permission. This can make testing OpenVPN much easier.
+ Note that this new script will not be used by default if a ``--up``
+ script is already in use to reduce problems with
+ backwards compatibility.
- For more details see [lwipovpn on
Gihtub](https://github.com/OpenVPN/lwipovpn).
+ See documentation for ``--dns-updown`` and ``--dns`` for more details.
+
+New client implementation for DNS options sent by server for Windows
+ The Windows client now uses NRPT (Name Resolution Policy Table) to
+ handle DNS configurations. This adds support for split-DNS and DNSSEC
+ and improves the compatbility with local DNS resolvers. Requires the
+ interactive service.
+
+On Windows the ``block-local`` flag is now enforced with WFP filters.
+ The ``block-local`` flag to ``--redirect-gateway`` and
+ ``--redirect-private`` is now also enforced via the Windows Firewall,
+ making sure packets can't be sent to the local network.
+ This provides stronger protection against TunnelCrack-style attacks.
+
+Windows network adapters are now generated on demand
+ This means that on systems that run multiple OpenVPN connections at
+ the same time the users don't need to manually create enough network
+ adapters anymore (in addition to the ones created by the installer).
+
+Windows automatic service now runs as an unpriviledged user
+ All tasks that need privileges are now delegated to the interactive
+ service.
+
+Support for new version of Linux DCO module
+ OpenVPN DCO module is moving upstream and being merged into the
+ main Linux kernel. For this process some API changes were required.
+ OpenVPN 2.7 will only support the new API. The new module is called
+ ``ovpn``. Out-of-tree builds for older kernels are available. Please
+ see the release announcements for futher information.
+
+Support for server mode in win-dco driver
+ On Windows the win-dco driver can now be used in server setups.
Enforcement of AES-GCM usage limit
OpenVPN will now enforce the usage limits on AES-GCM with the same
@@ -30,11 +63,6 @@
https://datatracker.ietf.org/doc/draft-irtf-cfrg-aead-limits/
-Default ciphers in ``--data-ciphers``
- Ciphers in ``--data-ciphers`` can contain the string DEFAULT that is
- replaced by the default ciphers used by OpenVPN, making it easier to
- add an allowed cipher without having to spell out the default ciphers.
-
Epoch data keys and packet format
This introduces the epoch data format for AEAD data channel
ciphers in TLS mode ciphers. This new data format has a number of
@@ -49,15 +77,46 @@
- IV constructed with XOR instead of concatenation to not have (parts) of
the real IV on the wire
+Default ciphers in ``--data-ciphers``
+ Ciphers in ``--data-ciphers`` can contain the string DEFAULT that is
+ replaced by the default ciphers used by OpenVPN, making it easier to
+ add an allowed cipher without having to spell out the default ciphers.
+
+TLS alerts
+ OpenVPN 2.7 will send out TLS alerts to peers informing them if the TLS
+ session shuts down or when the TLS implementation informs the peer about
+ an error in the TLS session (e.g. mismatching TLS versions). This improves
+ the user experience as the client shows an error instead of running into
+ a timeout when the server just stops responding completely.
+
+Support for tun/tap via unix domain socket and lwipovpn support
+ To allow better testing and emulating a full client with a full
+ network stack OpenVPN now allows a program executed to provide
+ a tun/tap device instead of opening a device.
+
+ The co-developed lwipovpn program based on lwIP stack allows to
+ simulate full IP stack. An OpenVPN client using
+ ``--dev-node unix:/path/to/lwipovpn`` can emulate a full client that
+ can be pinged, can serve a website and more without requiring any
+ elevated permission. This can make testing OpenVPN much easier.
+
+ For more details see [lwipovpn on
Gihtub](https://github.com/OpenVPN/lwipovpn).
+
Allow overriding username with ``--override-username``
This is intended to allow using auth-gen-token in scenarios where the
clients use certificates and multi-factor authentication. This will
also generate a 'push "auth-token-user newusername"' directives in
push replies.
+``--port-share`` now properly supports IPv6
+ Issues with logging of IPv6 addresses were fixed. The feature now allows
+ IPv6 connections towards the proxy receiver.
+
+Support for Haiku OS
+
Deprecated features
-------------------
-``secret`` support has been removed by default.
+``secret`` support has been removed (by default).
static key mode (non-TLS) is no longer considered "good and secure enough"
for today's requirements. Use TLS mode instead. If deploying a PKI CA
is considered "too complicated", using ``--peer-fingerprint`` makes
@@ -67,6 +126,14 @@
``--allow-deprecated-insecure-static-crypto`` but will be removed in
OpenVPN 2.8.
+Support for wintun Windows driver has been removed.
+ OpenVPN 2.6 added support for the new dco-win driver, so it supported
+ three different device drivers: dco-win, wintun, and tap-windows6.
+ OpenVPN 2.7 now drops the support for wintun driver. By default
+ all modern configs should be supported by dco-win driver. In all
+ other cases OpenVPN will fall back automatically to tap-windows6
+ driver.
+
NTLMv1 authentication support for HTTP proxies has been removed.
This is considered an insecure method of authentication that uses
obsolete crypto algorithms.
@@ -78,28 +145,34 @@
``persist-key`` option has been enabled by default.
All the keys will be kept in memory across restart.
-Default for ``--topology`` changed to ``subnet`` for ``--mode server``
- Previous releases always used ``net30`` as default. This only affects
- configs with ``--mode server`` or ``--server`` (the latter implies the
- former), and ``--dev tun``, and only if IPv4 is enabled.
- Note that this changes the semantics of ``--ifconfig``, so if you have
- manual settings for that in your config but not set ``--topology``
- your config might fail to parse with the new version. Just adding
- ``--topology net30`` to the config should fix the problem.
- By default ``--topology`` is pushed from server to client.
-
-OpenSSL 1.0.2 support
+OpenSSL 1.0.2 support has been removed.
Support for building with OpenSSL 1.0.2 has been removed. The minimum
supported OpenSSL version is now 1.1.0.
-Compression on send
+Support for mbedTLS older than 2.18.0 has been removed.
+ We now require all SSL libraries to have support for exporting
+ keying material. The only previously supported library versions
+ this affects are older mbedTLS releases.
+
+Compression on send has been removed.
OpenVPN 2.7 will never compress data before sending. Decompression of
received data is still supported.
``--allow-compression yes`` is now an alias for
``--allow-compression asym``.
+
User-visible Changes
--------------------
+- Default for ``--topology`` changed to ``subnet`` for ``--mode server``.
+ Previous releases always used ``net30`` as default. This only affects
+ configs with ``--mode server`` or ``--server`` (the latter implies the
+ former), and ``--dev tun``, and only if IPv4 is enabled.
+ Note that this changes the semantics of ``--ifconfig``, so if you have
+ manual settings for that in your config but not set ``--topology``
+ your config might fail to parse with the new version. Just adding
+ ``--topology net30`` to the config should fix the problem.
+ By default ``--topology`` is pushed from server to client.
+
- ``--x509-username-field`` will no longer automatically convert fieldnames to
uppercase. This is deprecated since OpenVPN 2.4, and has now been removed.
@@ -108,6 +181,29 @@
And finite field Diffie Hellman is in the proces of being deprecated
(see draft-ietf-tls-deprecate-obsolete-kex)
+- ``--lport 0`` does not imply ``--bind`` anymore.
+
+- ``--redirect--gateway`` now works correctly if the VPN remote is not
+ reachable by the default gateway.
+
+- ``--show-gateway`` now supports querying the gateway for IPv4 addresses.
+
+- ``--static-challenge`` option now has a third parameter ``format`` that
+ can change how password and challenge response should be combined.
+
+- ``--key`` and ``--cert`` now accept URIs implemented in OpenSSL 3 as well as
+ optional OpenSSL 3 providers loaded using ``--providers`` option.
+
+- ``--cryptoapicert`` now supports issuer name as well as Windows CA template
+ name or OID as selector string.
+
+- TLS handshake debugging information contains much more details now when
+ using recent versions of OpenSSL.
+
+- The ``IV_PLAT_VER`` variable sent by Windows clients now contains the
+ full Windows build version to make it possible to determine the
+ Windows 10 or Windows 11 version used.
+
Overview of changes in 2.6
==========================
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Gerrit-Project: openvpn
Gerrit-Branch: master
Gerrit-Change-Id: I80a14b77fcc2fabf51af9f2d5ea0c36362cccb91
Gerrit-Change-Number: 1032
Gerrit-PatchSet: 5
Gerrit-Owner: flichtenheld <fr...@lichtenheld.com>
Gerrit-Reviewer: plaisthos <arne-open...@rfc2549.org>
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