openvpn/sample/sample-config-files/loopback-server
Gert Doering 2d73540316 Remove use of 'dh dh2048.pem' from sample configs, remove 'dh2048.pem' file
Since commit bd9aa06feb (Jan 2015) OpenVPN has allowed to use
'--dh none' to disable traditional Diffie Hellman, since more secure
ECDH algorithms are available that do not use explicit DH parameters.

If configured with a suffiently high securelevel (3+), or if running in
FIPS mode, OpenSSL 3.5 will refuse 2048 bit DH files, making our tests
fail.

Thus, remove all the DH2048 stuff from our sample configs.

Github: triggered by OpenVPN/openvpn#819

Change-Id: If66438662bd862a195b2a69c4fa45f63838982b7
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20250820175459.11227-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg32632.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
2025-08-20 23:11:33 +02:00

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# Perform a TLS loopback test -- server side.
#
# This test performs a TLS negotiation once every 10 seconds,
# and will terminate after 2 minutes.
#
# From the root directory of the OpenVPN distribution,
# after openvpn has been built, run:
#
# ./openvpn --config sample-config-files/loopback-client (In one window)
# ./openvpn --config sample-config-files/loopback-server (Simultaneously in another window)
rport 16001
lport 16000
remote localhost
local localhost
dev null
verb 3
reneg-sec 10
tls-server
dh none
ca sample-keys/ca.crt
key sample-keys/server.key
cert sample-keys/server.crt
tls-auth sample-keys/ta.key 0
cipher AES-256-GCM
ping 1
inactive 120 10000000