ssl.conf.erb

<IfModule mod_ssl.c>
#
# 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 builtin
SSLRandomSeed startup file:/dev/urandom 512
SSLRandomSeed connect builtin
SSLRandomSeed connect file:/dev/urandom 512

##
##  SSL Global Context
##
##  All SSL configuration in this context applies both to
##  the main server and all SSL-enabled virtual hosts.
##

#
#   Some MIME-types for downloading Certificates and CRLs
#
AddType application/x-x509-ca-cert .crt
AddType application/x-pkcs7-crl    .crl

#   Pass Phrase Dialog:
#   Configure the pass phrase gathering process.
#   The filtering dialog program (`builtin' is a 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:/var/run/apache2/ssl_scache
<% if node[:platform] == "centos" || node[:platform] == "redhat" || node[:platform] == "fedora" -%>
SSLSessionCache        shmcb:/var/cache/mod_ssl/scache(512000)
<% else -%>
SSLSessionCache        shmcb:/var/run/apache2/ssl_scache
<% end -%> 
SSLSessionCacheTimeout  300

#   Semaphore:
#   Configure the path to the mutual exclusion semaphore the
#   SSL engine uses internally for inter-process synchronization. 
<% if node[:platform] == "centos" || node[:platform] == "redhat" || node[:platform] == "fedora" -%>
SSLMutex  default
<% else -%>
SSLMutex  file:/var/run/apache2/ssl_mutex
<% end -%>

#   SSL Cipher Suite:
#   List the ciphers that the client is permitted to negotiate.
#   See the mod_ssl documentation for a complete list.
#   enable only secure ciphers:
SSLCipherSuite HIGH:MEDIUM:!ADH
#   Use this instead if you want to allow cipher upgrades via SGC facility.
#   In this case you also have to use something like 
#        SSLRequire %{SSL_CIPHER_USEKEYSIZE} >= 128
#   see http://httpd.apache.org/docs/2.2/ssl/ssl_howto.html.en#upgradeenc
#SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL

# enable only secure protocols: SSLv3 and TLSv1, but not SSLv2
SSLProtocol all -SSLv2

</IfModule>