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a9363eb6a5
If openssl 1.1.1 is used, c2aae74f0 commit mistakenly enables DH automatic feature from openssl instead of ECDH automatic feature. There is no impact for the ECDH one because the feature is always enabled for that version. But doing this, the 'tune.ssl.default-dh-param' was completely ignored for DH parameters. This patch fix the bug calling 'SSL_CTX_set_ecdh_auto' instead of 'SSL_CTX_set_dh_auto'. Currently some users may use a 2048 DH bits parameter, thinking they're using a 1024 bits one. Doing this, they may experience performance issue on light hardware. This patch warns the user if haproxy fails to configure the given DH parameter. In this case and if openssl version is > 1.1.0, haproxy will let openssl to automatically choose a default DH parameter. For other openssl versions, the DH ciphers won't be usable. A commonly case of failure is due to the security level of openssl.cnf which could refuse a 1024 bits DH parameter for a 2048 bits key: $ cat /etc/ssl/openssl.cnf ... [system_default_sect] MinProtocol = TLSv1 CipherString = DEFAULT@SECLEVEL=2 This should be backport into any branch containing the commit c2aae74f0. It requires all or part of the previous CLEANUP series. This addresses github issue #324.
The HAProxy documentation has been split into a number of different files for ease of use. Please refer to the following files depending on what you're looking for : - INSTALL for instructions on how to build and install HAProxy - BRANCHES to understand the project's life cycle and what version to use - LICENSE for the project's license - CONTRIBUTING for the process to follow to submit contributions The more detailed documentation is located into the doc/ directory : - doc/intro.txt for a quick introduction on HAProxy - doc/configuration.txt for the configuration's reference manual - doc/lua.txt for the Lua's reference manual - doc/SPOE.txt for how to use the SPOE engine - doc/network-namespaces.txt for how to use network namespaces under Linux - doc/management.txt for the management guide - doc/regression-testing.txt for how to use the regression testing suite - doc/peers.txt for the peers protocol reference - doc/coding-style.txt for how to adopt HAProxy's coding style - doc/internals for developer-specific documentation (not all up to date)