diff options
| author | James Yonan <james@openvpn.net> | 2013-06-10 22:59:30 -0600 |
|---|---|---|
| committer | David Sommerseth <davids@redhat.com> | 2013-07-11 21:00:20 +0200 |
| commit | 4b67f9849ab3efe89268e01afddc7795f38d0f64 (patch) | |
| tree | 10a9e63eef0f83ae032441c582d98f15a7d6399e /doc/openvpn.8 | |
| parent | 8065cd1c65273ef05ba2ac66f15224e170a57290 (diff) | |
| download | openvpn-4b67f9849ab3efe89268e01afddc7795f38d0f64.tar.gz openvpn-4b67f9849ab3efe89268e01afddc7795f38d0f64.tar.xz openvpn-4b67f9849ab3efe89268e01afddc7795f38d0f64.zip | |
TLS version negotiation
Updated the TLS negotiation logic to adaptively try to connect using
the highest TLS version supported by both client and server.
Previously, OpenVPN (when linked with OpenSSL) would always connect
using TLS 1.0.
Also added tls-version-min directive to force a higher TLS version
than 1.0:
tls-version-min <version> ['or-highest'] -- sets the minimum
TLS version we will accept from the peer. Examples for version
include "1.0" (default), "1.1", or "1.2". If 'or-highest' is
specified and version is not recognized, we will only accept
the highest TLS version supported by the local SSL implementation.
Examples:
tls-version-min 1.1 -- fail the connection unless peer can
connect at TLS 1.1 or higher.
tls-version-min 1.2 or-highest -- require that the peer
connect at TLS 1.2 or higher, however if the local SSL
implementation doesn't support TLS 1.2 (as it wouldn't
if linked with an older version of OpenSSL), reduce the
minimum required version to the highest version supported
by the local SSL implementation (such as TLS 1.0). This
is intended to allow client configurations to target higher
TLS versions that are supported on the server, even if some
older clients don't support these versions yet.
[
This is a merged patch from on the following commits
on git://github.com/jamesyonan/openvpn.git
03a5599202bdc3ba07983dc4efdae387fb8fb436
d23005413b0e0f28a3c48a6342f494763d5c9b40
]
Signed-off-by: James Yonan <james@openvpn.net>
Acked-by: Gert Doering <gert@greenie.muc.de>
Acked-by: Arne Schwabe <arne@rfc2549.org>
URL: http://thread.gmane.org/gmane.network.openvpn.devel/7743
URL: http://thread.gmane.org/gmane.network.openvpn.devel/7744
Message-Id: 51C77F12.1090802@openvpn.net
Signed-off-by: David Sommerseth <davids@redhat.com>
Diffstat (limited to 'doc/openvpn.8')
| -rw-r--r-- | doc/openvpn.8 | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/openvpn.8 b/doc/openvpn.8 index 3f9203e..f74fe81 100644 --- a/doc/openvpn.8 +++ b/doc/openvpn.8 @@ -4246,6 +4246,15 @@ when you built your peer's certificate (see above). .\"********************************************************* .TP +.B \-\-tls-version-min version ['or-highest'] +Sets the minimum +TLS version we will accept from the peer (default is "1.0"). +Examples for version +include "1.0", "1.1", or "1.2". If 'or-highest' is specified +and version is not recognized, we will only accept the highest TLS +version supported by the local SSL implementation. +.\"********************************************************* +.TP .B \-\-pkcs12 file Specify a PKCS #12 file containing local private key, local certificate, and root CA certificate. |