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Strong SSL Security Configuration for old Apache (2.4.18 and below)
#
# This is the Apache server configuration file providing SSL support.
# It contains the configuration directives to instruct the server how to
# serve pages over an https connection. For detailed information about these
# directives see <URL:http://httpd.apache.org/docs/2.4/mod/mod_ssl.html>
#
# Do NOT simply read the instructions in here without understanding
# what they do. They're here only as hints or reminders. If you are unsure
# consult the online docs. You have been warned.
#
# Required modules: mod_log_config, mod_setenvif, mod_ssl,
# socache_shmcb_module (for default value of SSLSessionCache)
#
# Pseudo Random Number Generator (PRNG):
# Configure one or more sources to seed the PRNG of the SSL library.
# The seed data should be of good random quality.
# WARNING! On some platforms /dev/random blocks if not enough entropy
# is available. This means you then cannot use the /dev/random device
# because it would lead to very long connection times (as long as
# it requires to make more entropy available). But usually those
# platforms additionally provide a /dev/urandom device which doesn't
# block. So, if available, use this one instead. Read the mod_ssl User
# Manual for more details.
#
#SSLRandomSeed startup file:/dev/random 512
#SSLRandomSeed startup file:/dev/urandom 512
#SSLRandomSeed connect file:/dev/random 512
#SSLRandomSeed connect file:/dev/urandom 512
#
# When we also provide SSL we have to listen to the
# standard HTTP port (see above) and to the HTTPS port
#
Listen 443
##
## SSL Global Context
##
## All SSL configuration in this context applies both to
## the main server and all SSL-enabled virtual hosts.
##
# SSL Cipher Suite:
# List the ciphers that the client is permitted to negotiate,
# and that httpd will negotiate as the client of a proxied server.
# See the OpenSSL documentation for a complete list of ciphers, and
# ensure these follow appropriate best practices for this deployment.
# httpd 2.2.30, 2.4.13 and later force-disable aNULL, eNULL and EXP ciphers,
# while OpenSSL disabled these by default in 0.9.8zf/1.0.0r/1.0.1m/1.0.2a.
SSLCipherSuite HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4:!3DES:!AES256-SHA:!AES128-SHA:!ECDHE-RSA-AES256-SHA384:!ECDHE-RSA-AES256-SHA:!DHE-RSA-AES256-SHA256:!DHE-RSA-AES256-SHA:!DHE-RSA-CAMELLIA256-SHA256:!DHE-RSA-CAMELLIA256-SHA:!AES256-SHA256:!CAMELLIA256-SHA256:!CAMELLIA256-SHA:!ECDHE-RSA-AES128-SHA256:!ECDHE-RSA-AES128-SHA:!DHE-RSA-AES128-SHA256:!DHE-RSA-AES128-SHA:!DHE-RSA-CAMELLIA128-SHA256:!DHE-RSA-CAMELLIA128-SHA:!AES128-SHA256:!CAMELLIA128-SHA256:!CAMELLIA128-SHA:!DHE-RSA-CHACHA20-POLY1305-OLD:!DHE-RSA-AES256-GCM-SHA384:!DHE-RSA-AES128-GCM-SHA256
SSLProxyCipherSuite HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4:!3DES:!AES256-SHA:!AES128-SHA:!ECDHE-RSA-AES256-SHA384:!ECDHE-RSA-AES256-SHA:!DHE-RSA-AES256-SHA256:!DHE-RSA-AES256-SHA:!DHE-RSA-CAMELLIA256-SHA256:!DHE-RSA-CAMELLIA256-SHA:!AES256-SHA256:!CAMELLIA256-SHA256:!CAMELLIA256-SHA:!ECDHE-RSA-AES128-SHA256:!ECDHE-RSA-AES128-SHA:!DHE-RSA-AES128-SHA256:!DHE-RSA-AES128-SHA:!DHE-RSA-CAMELLIA128-SHA256:!DHE-RSA-CAMELLIA128-SHA:!AES128-SHA256:!CAMELLIA128-SHA256:!CAMELLIA128-SHA:!DHE-RSA-CHACHA20-POLY1305-OLD:!DHE-RSA-AES256-GCM-SHA384:!DHE-RSA-AES128-GCM-SHA256
# By the end of 2016, only TLSv1.2 ciphers should remain in use.
# Older ciphers should be disallowed as soon as possible, while the
# kRSA ciphers do not offer forward secrecy. These changes inhibit
# older clients (such as IE6 SP2 or IE8 on Windows XP, or other legacy
# non-browser tooling) from successfully connecting.
#
# To restrict mod_ssl to use only TLSv1.2 ciphers, and disable
# those protocols which do not support forward secrecy, replace
# the SSLCipherSuite and SSLProxyCipherSuite directives above with
# the following two directives, as soon as practical.
# SSLCipherSuite HIGH:MEDIUM:!SSLv3:!kRSA
# SSLProxyCipherSuite HIGH:MEDIUM:!SSLv3:!kRSA
# User agents such as web browsers are not configured for the user's
# own preference of either security or performance, therefore this
# must be the prerogative of the web server administrator who manages
# cpu load versus confidentiality, so enforce the server's cipher order.
SSLHonorCipherOrder on
# SSL Protocol support:
# List the protocol versions which clients are allowed to connect with.
# Disable SSLv3 by default (cf. RFC 7525 3.1.1). TLSv1 (1.0) should be
# disabled as quickly as practical. By the end of 2016, only the TLSv1.2
# protocol or later should remain in use.
#SSLProtocol all -SSLv3
#SSLProxyProtocol all -SSLv3
SSLProtocol all -SSLv3 -TLSv1
SSLProxyProtocol all -SSLv3 -TLSv1
# Pass Phrase Dialog:
# Configure the pass phrase gathering process.
# The filtering dialog program (`builtin' is an internal
# terminal dialog) has to provide the pass phrase on stdout.
SSLPassPhraseDialog builtin
# Inter-Process Session Cache:
# Configure the SSL Session Cache: First the mechanism
# to use and second the expiring timeout (in seconds).
#SSLSessionCache "dbm:/private/var/run/ssl_scache"
SSLSessionCache "shmcb:/private/var/run/ssl_scache(512000)"
SSLSessionCacheTimeout 300
# OCSP Stapling (requires OpenSSL 0.9.8h or later)
#
# This feature is disabled by default and requires at least
# the two directives SSLUseStapling and SSLStaplingCache.
# Refer to the documentation on OCSP Stapling in the SSL/TLS
# How-To for more information.
#
# Enable stapling for all SSL-enabled servers:
#SSLUseStapling On
# Define a relatively small cache for OCSP Stapling using
# the same mechanism that is used for the SSL session cache
# above. If stapling is used with more than a few certificates,
# the size may need to be increased. (AH01929 will be logged.)
#SSLStaplingCache "shmcb:/private/var/run/ssl_stapling(32768)"
# Seconds before valid OCSP responses are expired from the cache
#SSLStaplingStandardCacheTimeout 3600
# Seconds before invalid OCSP responses are expired from the cache
#SSLStaplingErrorCacheTimeout 600
##
## SSL Virtual Host Context
##
<VirtualHost _default_:443>
# General setup for the virtual host
DocumentRoot "/Library/WebServer/Documents"
ServerName www.example.com:443
ServerAdmin you@example.com
ErrorLog "/private/var/log/apache2/error_log"
TransferLog "/private/var/log/apache2/access_log"
# SSL Engine Switch:
# Enable/Disable SSL for this virtual host.
SSLEngine on
# Server Certificate:
# Point SSLCertificateFile at a PEM encoded certificate. If
# the certificate is encrypted, then you will be prompted for a
# pass phrase. Note that a kill -HUP will prompt again. Keep
# in mind that if you have both an RSA and a DSA certificate you
# can configure both in parallel (to also allow the use of DSA
# ciphers, etc.)
# Some ECC cipher suites (http://www.ietf.org/rfc/rfc4492.txt)
# require an ECC certificate which can also be configured in
# parallel.
SSLCertificateFile "/private/etc/apache2/server.crt"
#SSLCertificateFile "/private/etc/apache2/server-dsa.crt"
#SSLCertificateFile "/private/etc/apache2/server-ecc.crt"
# Server Private Key:
# If the key is not combined with the certificate, use this
# directive to point at the key file. Keep in mind that if
# you've both a RSA and a DSA private key you can configure
# both in parallel (to also allow the use of DSA ciphers, etc.)
# ECC keys, when in use, can also be configured in parallel
SSLCertificateKeyFile "/private/etc/apache2/server.key"
#SSLCertificateKeyFile "/private/etc/apache2/server-dsa.key"
#SSLCertificateKeyFile "/private/etc/apache2/server-ecc.key"
# Server Certificate Chain:
# Point SSLCertificateChainFile at a file containing the
# concatenation of PEM encoded CA certificates which form the
# certificate chain for the server certificate. Alternatively
# the referenced file can be the same as SSLCertificateFile
# when the CA certificates are directly appended to the server
# certificate for convenience.
#SSLCertificateChainFile "/private/etc/apache2/server-ca.crt"
# Certificate Authority (CA):
# Set the CA certificate verification path where to find CA
# certificates for client authentication or alternatively one
# huge file containing all of them (file must be PEM encoded)
# Note: Inside SSLCACertificatePath you need hash symlinks
# to point to the certificate files. Use the provided
# Makefile to update the hash symlinks after changes.
#SSLCACertificatePath "/private/etc/apache2/ssl.crt"
#SSLCACertificateFile "/private/etc/apache2/ssl.crt/ca-bundle.crt"
# Certificate Revocation Lists (CRL):
# Set the CA revocation path where to find CA CRLs for client
# authentication or alternatively one huge file containing all
# of them (file must be PEM encoded).
# The CRL checking mode needs to be configured explicitly
# through SSLCARevocationCheck (defaults to "none" otherwise).
# Note: Inside SSLCARevocationPath you need hash symlinks
# to point to the certificate files. Use the provided
# Makefile to update the hash symlinks after changes.
#SSLCARevocationPath "/private/etc/apache2/ssl.crl"
#SSLCARevocationFile "/private/etc/apache2/ssl.crl/ca-bundle.crl"
#SSLCARevocationCheck chain
# Client Authentication (Type):
# Client certificate verification type and depth. Types are
# none, optional, require and optional_no_ca. Depth is a
# number which specifies how deeply to verify the certificate
# issuer chain before deciding the certificate is not valid.
#SSLVerifyClient require
#SSLVerifyDepth 10
# TLS-SRP mutual authentication:
# Enable TLS-SRP and set the path to the OpenSSL SRP verifier
# file (containing login information for SRP user accounts).
# Requires OpenSSL 1.0.1 or newer. See the mod_ssl FAQ for
# detailed instructions on creating this file. Example:
# "openssl srp -srpvfile /private/etc/apache2/passwd.srpv -add username"
#SSLSRPVerifierFile "/private/etc/apache2/passwd.srpv"
# Access Control:
# With SSLRequire you can do per-directory access control based
# on arbitrary complex boolean expressions containing server
# variable checks and other lookup directives. The syntax is a
# mixture between C and Perl. See the mod_ssl documentation
# for more details.
#<Location />
#SSLRequire ( %{SSL_CIPHER} !~ m/^(EXP|NULL)/ \
# and %{SSL_CLIENT_S_DN_O} eq "Snake Oil, Ltd." \
# and %{SSL_CLIENT_S_DN_OU} in {"Staff", "CA", "Dev"} \
# and %{TIME_WDAY} >= 1 and %{TIME_WDAY} <= 5 \
# and %{TIME_HOUR} >= 8 and %{TIME_HOUR} <= 20 ) \
# or %{REMOTE_ADDR} =~ m/^192\.76\.162\.[0-9]+$/
#</Location>
# SSL Engine Options:
# Set various options for the SSL engine.
# o FakeBasicAuth:
# Translate the client X.509 into a Basic Authorisation. This means that
# the standard Auth/DBMAuth methods can be used for access control. The
# user name is the `one line' version of the client's X.509 certificate.
# Note that no password is obtained from the user. Every entry in the user
# file needs this password: `xxj31ZMTZzkVA'.
# o ExportCertData:
# This exports two additional environment variables: SSL_CLIENT_CERT and
# SSL_SERVER_CERT. These contain the PEM-encoded certificates of the
# server (always existing) and the client (only existing when client
# authentication is used). This can be used to import the certificates
# into CGI scripts.
# o StdEnvVars:
# This exports the standard SSL/TLS related `SSL_*' environment variables.
# Per default this exportation is switched off for performance reasons,
# because the extraction step is an expensive operation and is usually
# useless for serving static content. So one usually enables the
# exportation for CGI and SSI requests only.
# o StrictRequire:
# This denies access when "SSLRequireSSL" or "SSLRequire" applied even
# under a "Satisfy any" situation, i.e. when it applies access is denied
# and no other module can change it.
# o OptRenegotiate:
# This enables optimized SSL connection renegotiation handling when SSL
# directives are used in per-directory context.
#SSLOptions +FakeBasicAuth +ExportCertData +StrictRequire
<FilesMatch "\.(cgi|shtml|phtml|php)$">
SSLOptions +StdEnvVars
</FilesMatch>
<Directory "/Library/WebServer/CGI-Executables">
SSLOptions +StdEnvVars
</Directory>
# SSL Protocol Adjustments:
# The safe and default but still SSL/TLS standard compliant shutdown
# approach is that mod_ssl sends the close notify alert but doesn't wait for
# the close notify alert from client. When you need a different shutdown
# approach you can use one of the following variables:
# o ssl-unclean-shutdown:
# This forces an unclean shutdown when the connection is closed, i.e. no
# SSL close notify alert is sent or allowed to be received. This violates
# the SSL/TLS standard but is needed for some brain-dead browsers. Use
# this when you receive I/O errors because of the standard approach where
# mod_ssl sends the close notify alert.
# o ssl-accurate-shutdown:
# This forces an accurate shutdown when the connection is closed, i.e. a
# SSL close notify alert is send and mod_ssl waits for the close notify
# alert of the client. This is 100% SSL/TLS standard compliant, but in
# practice often causes hanging connections with brain-dead browsers. Use
# this only for browsers where you know that their SSL implementation
# works correctly.
# Notice: Most problems of broken clients are also related to the HTTP
# keep-alive facility, so you usually additionally want to disable
# keep-alive for those clients, too. Use variable "nokeepalive" for this.
# Similarly, one has to force some clients to use HTTP/1.0 to workaround
# their broken HTTP/1.1 implementation. Use variables "downgrade-1.0" and
# "force-response-1.0" for this.
BrowserMatch "MSIE [2-5]" \
nokeepalive ssl-unclean-shutdown \
downgrade-1.0 force-response-1.0
# Per-Server Logging:
# The home of a custom SSL log file. Use this when you want a
# compact non-error SSL logfile on a virtual host basis.
CustomLog "/private/var/log/apache2/ssl_request_log" \
"%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"
</VirtualHost>
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