La directiva SSLOpenSSLConfCmd disponible en httpd 2.4.8 (que no se lanzó) y posteriores, si se utiliza OpenSSL 1.0.2 o posterior.
Cambios con Apache 2.4.8 (no publicado) ... mod_ssl: agregue soporte para los comandos de configuración de OpenSSL mediante la introducción de la directiva SSLOpenSSLConfCmd. [Stephen Henson, marca Kaspar] ...
Construir APR
# ./configure --host=x86_64-redhat-linux-gnu --build=x86_64-redhat-linux-gnu --prefix=/opt/apr-1.5.2 --with-devrandom=/dev/urandom
Construir APR-UTIL
# ./configure --prefix=/opt/apr-util-1.5.4 --with-ldap --with-crypto --with-openssl=/opt/openssl-1.0.2a --with-apr=/opt/apr-1.5.2
Construye Apache
# ./configure --prefix=/opt/httpd-2.4.12 --enable-mpms-shared=all --with-pcre --enable-mods-shared=all --enable-ssl --with-ssl=/opt/openssl-1.0.2a --with-apr=/opt/apr-1.5.2 --with-apr-util=/opt/apr-util-1.5.4 --enable-session-crypto
...
configure:
setting INCLUDES to "-I."
adding "-I$(top_srcdir)/os/$(OS_DIR)" to INCLUDES
adding "-I$(top_srcdir)/include" to INCLUDES
adding "-I/opt/apr-1.5.2/include/apr-1" to INCLUDES
adding "-I/opt/apr-util-1.5.4/include/apr-1" to INCLUDES
adding "-I/opt/openssl-1.0.2a/include" to INCLUDES
...
Verifique mod_ssl.so
# ldd mod_ssl.so | grep ssl
libssl.so.1.0.0 => /opt/openssl-1.0.2a/lib/libssl.so.1.0.0 (0x00007f6f3c6bd000)
libcrypto.so.1.0.0 => /opt/openssl-1.0.2a/lib/libcrypto.so.1.0.0 (0x00007f6f3c287000)
# strings mod_ssl.so | grep SSLOpenSSLConfCmd
SSLOpenSSLConfCmd
AH02407: "SSLOpenSSLConfCmd %s %s" failed for %s
AH02556: "SSLOpenSSLConfCmd %s %s" applied to %s
Verifique la configuración de apache
# ./httpd -v
Server version: Apache/2.4.12 (Unix)
Server built: Mar 27 2016 16:29:30
# ./httpd -V
Server version: Apache/2.4.12 (Unix)
Server built: Mar 27 2016 16:29:30
Server's Module Magic Number: 20120211:41
Server loaded: APR 1.5.2, APR-UTIL 1.5.4
Compiled using: APR 1.5.2, APR-UTIL 1.5.4
Architecture: 64-bit
Server MPM: event
threaded: yes (fixed thread count)
forked: yes (variable process count)
Server compiled with....
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=256
-D HTTPD_ROOT="/opt/httpd-2.4.12"
-D SUEXEC_BIN="/opt/httpd-2.4.12/bin/suexec"
-D DEFAULT_PIDLOG="logs/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"
# /opt/httpd-2.4.12/bin/apachectl -t
Syntax OK
Configuración de host virtual
# conf/extra/httpd-ssl.conf
Listen 443
SSLOpenSSLConfCmd DHParameters /etc/pki/httpd/dhparams_2048.pem
SSLCipherSuite kEECDH+AES128:kEECDH:kEDH:-3DES:kRSA+AES128:kEDH+3DES:DES-CBC3-SHA:!RC4:!aNULL:!eNULL:!MD5:!EXPORT:!LOW:!SEED:!CAMELLIA:!IDEA:!PSK:!SRP:!SSLv2
SSLHonorCipherOrder on
SSLPassPhraseDialog builtin
SSLSessionCache "shmcb:/opt/httpd-2.4.12/logs/ssl_scache(512000)"
SSLSessionCacheTimeout 300
SSLProtocol All -SSLv2 -SSLv3
<VirtualHost _default_:443>
DocumentRoot "/opt/httpd-2.4.12/htdocs"
ServerName ssllabs.example.com:443
ServerAdmin webmaster@example.com
ErrorLog "/opt/httpd-2.4.12/logs/error_log"
TransferLog "/opt/httpd-2.4.12/logs/access_log"
SSLEngine on
SSLCertificateFile /etc/pki/httpd/server.pem
SSLCertificateKeyFile /etc/pki/httpd/server.key
<FilesMatch "\.(cgi|shtml|phtml|php)$">
SSLOptions +StdEnvVars
</FilesMatch>
<Directory "/opt/httpd-2.4.12/cgi-bin">
SSLOptions +StdEnvVars
</Directory>
BrowserMatch "MSIE [2-5]" nokeepalive ssl-unclean-shutdown downgrade-1.0 force-response-1.0
CustomLog "/opt/httpd-2.4.12/logs/ssl_request_log" "%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"
</VirtualHost>
Resultado de la prueba