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      .. _dh-apache:

      Diffie-Hellman Security

      -----------------------

      To secure your web server, the `Guide to Deploying Diffie-Hellman for TLS`_

      contains important information worth reading. This link contains some good

      `secure Apache configuration`_ examples.

      To secure your deployment of Diffie-Hellman, configure the following:

      1. Generate a strong Diffie-hellman group, 2048-bit or stronger.

      .. code-block:: bash

          # to generate your dhparam.pem file, run in the terminal

          openssl dhparam -out /etc/apache/ssl/dhparam.pem 2048

      2. Configure your server to only use modern, secure cipher suites in the

         virtual hosts configuration file.

      .. code-block:: apache

          # Set the protocol to only use modern, secure cipher suites.

          SSLProtocol             all -SSLv2 -SSLv3

          SSLHonorCipherOrder     on

          SSLCipherSuite          ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA

          # Specify your DH params file as follows

          SSLOpenSSLConfCmd DHParameters "{path to dhparams.pem}"

      .. _Guide to Deploying Diffie-Hellman for TLS: https://weakdh.org/sysadmin.html

      .. _secure Apache configuration: http://www.apache-ssl.org/httpd.conf.example

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marcink project: added all source files and assets	r1	.. _dh-apache:

		Diffie-Hellman Security
		-----------------------

		To secure your web server, the `Guide to Deploying Diffie-Hellman for TLS`_
		contains important information worth reading. This link contains some good
		`secure Apache configuration`_ examples.

		To secure your deployment of Diffie-Hellman, configure the following:

		1. Generate a strong Diffie-hellman group, 2048-bit or stronger.

		.. code-block:: bash

		# to generate your dhparam.pem file, run in the terminal
		openssl dhparam -out /etc/apache/ssl/dhparam.pem 2048

		2. Configure your server to only use modern, secure cipher suites in the
		virtual hosts configuration file.

		.. code-block:: apache

		# Set the protocol to only use modern, secure cipher suites.
		SSLProtocol all -SSLv2 -SSLv3
		SSLHonorCipherOrder on
		SSLCipherSuite ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA

		# Specify your DH params file as follows
		SSLOpenSSLConfCmd DHParameters "{path to dhparams.pem}"


		.. _Guide to Deploying Diffie-Hellman for TLS: https://weakdh.org/sysadmin.html
		.. _secure Apache configuration: http://www.apache-ssl.org/httpd.conf.example