diff --git a/src/onegate/etc/onegate-server.conf b/src/onegate/etc/onegate-server.conf
index 41f6648d2e..3e7255952a 100644
--- a/src/onegate/etc/onegate-server.conf
+++ b/src/onegate/etc/onegate-server.conf
@@ -27,6 +27,9 @@
 :host: 127.0.0.1
 :port: 5030
 
+# SSL proxy URL that serves the API (set if is being used)
+#:ssl_server: https://service.endpoint.fqdn:port/
+
 ################################################################################
 # Log
 ################################################################################
diff --git a/src/onegate/onegate-server.rb b/src/onegate/onegate-server.rb
index 333261b15f..8a1d38cecf 100644
--- a/src/onegate/onegate-server.rb
+++ b/src/onegate/onegate-server.rb
@@ -242,10 +242,13 @@ get '/' do
     client = authenticate(request.env, params)
     halt 401, "Not authorized" if client.nil?
 
-    protocol = request.env["rack.url_scheme"]
-    host     = request.env["HTTP_HOST"]
-
-    base_uri = "#{protocol}://#{host}"
+    if $conf[:ssl_server]
+        base_uri = $conf[:ssl_server]
+    else
+        protocol = request.env["rack.url_scheme"]
+        host     = request.env["HTTP_HOST"]
+        base_uri = "#{protocol}://#{host}"
+    end
 
     response = {
         "vm_info"      => "#{base_uri}/vm",