diff --git a/http/Provision/Config/Apache/server.tpl.php b/http/Provision/Config/Apache/server.tpl.php
index e6ea28a..6f18f33 100644
--- a/http/Provision/Config/Apache/server.tpl.php
+++ b/http/Provision/Config/Apache/server.tpl.php
@@ -12,7 +12,6 @@ NameVirtualHost *:<?php print $http_port; ?>
   </IfModule>
 </VirtualHost>
 
-
 <IfModule !env_module>
   LoadModule env_module modules/mod_env.so
 </IfModule>
@@ -21,6 +20,11 @@ NameVirtualHost *:<?php print $http_port; ?>
   LoadModule rewrite_module modules/mod_rewrite.so
 </IfModule>
 
+# Set whether the original request was using HTTPS.
+<If "%{HTTP:HTTP_X_FORWARDED_PROTO} == 'https'">
+  SetEnv HTTPS    on
+</If>
+
 <?php
 if (drush_get_option('provision_apache_conf_suffix', FALSE)) {
   $include_statement = 'IncludeOptional ';
diff --git a/http/Provision/Config/Nginx/server.tpl.php b/http/Provision/Config/Nginx/server.tpl.php
index 781d84c..c7a5a53 100644
--- a/http/Provision/Config/Nginx/server.tpl.php
+++ b/http/Provision/Config/Nginx/server.tpl.php
@@ -99,6 +99,8 @@ if ($nginx_has_upload_progress) {
   fastcgi_index  index.php;
   # Block https://httpoxy.org/ attacks.
   fastcgi_param  HTTP_PROXY          "";
+  # Set whether the original request was using HTTPS.
+  fastcgi_param  HTTPS               $forwarded_protocol if_not_empty;
 <?php endif; ?>
 
  ## Size Limits
@@ -222,6 +224,14 @@ if ($nginx_has_upload_progress) {
 #######################################################
 
 ###
+### Detect whether the original request was using HTTPS.
+###
+map $http_x_forwarded_proto $forwarded_protocol {
+  default "off";
+  https "on";
+}
+
+###
 ### Support separate Speed Booster caches for various mobile devices.
 ###
 map $http_user_agent $device {
diff --git a/http/Provision/Config/Nginx/subdir.tpl.php b/http/Provision/Config/Nginx/subdir.tpl.php
index 1b1bd8b..ceb6b27 100644
--- a/http/Provision/Config/Nginx/subdir.tpl.php
+++ b/http/Provision/Config/Nginx/subdir.tpl.php
@@ -318,6 +318,9 @@ location ^~ /<?php print $subdir; ?> {
 
     include       fastcgi_params;
 
+    # Set whether the original request was using HTTPS.
+    fastcgi_param HTTPS $forwarded_protocol if_not_empty;
+
     # Block https://httpoxy.org/ attacks.
     fastcgi_param HTTP_PROXY "";
 
@@ -812,6 +815,9 @@ location ^~ /<?php print $subdir; ?> {
 
     include       fastcgi_params;
 
+    # Set whether the original request was using HTTPS.
+    fastcgi_param HTTPS $forwarded_protocol if_not_empty;
+
     # Block https://httpoxy.org/ attacks.
     fastcgi_param HTTP_PROXY "";
 
@@ -1018,6 +1024,9 @@ location ^~ /<?php print $subdir; ?> {
 
     include       fastcgi_params;
 
+    # Set whether the original request was using HTTPS.
+    fastcgi_param HTTPS $forwarded_protocol if_not_empty;
+
     # Block https://httpoxy.org/ attacks.
     fastcgi_param HTTP_PROXY "";
 
@@ -1099,6 +1108,9 @@ location ^~ /<?php print $subdir; ?> {
 
     include       fastcgi_params;
 
+    # Set whether the original request was using HTTPS.
+    fastcgi_param HTTPS $forwarded_protocol if_not_empty;
+
     # Block https://httpoxy.org/ attacks.
     fastcgi_param HTTP_PROXY "";
 
@@ -1251,6 +1263,9 @@ location @allowupdate_<?php print $subdir_loc; ?> {
 <?php endif; ?>
   include       fastcgi_params;
 
+  # Set whether the original request was using HTTPS.
+  fastcgi_param HTTPS $forwarded_protocol if_not_empty;
+
   # Block https://httpoxy.org/ attacks.
   fastcgi_param HTTP_PROXY "";
 
diff --git a/http/Provision/Config/Nginx/vhost.tpl.php b/http/Provision/Config/Nginx/vhost.tpl.php
index 955288e..b3566ac 100644
--- a/http/Provision/Config/Nginx/vhost.tpl.php
+++ b/http/Provision/Config/Nginx/vhost.tpl.php
@@ -41,6 +41,9 @@ server {
   # Block https://httpoxy.org/ attacks.
   fastcgi_param HTTP_PROXY "";
 
+  # Set whether the original request was using HTTPS.
+  fastcgi_param HTTPS "$forwarded_protocol" if_not_empty;
+
   fastcgi_param MAIN_SITE_NAME <?php print $this->uri; ?>;
   set $main_site_name "<?php print $this->uri; ?>";
   fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;