ISA 2006 and OWA 2003 Implementation Guide

Transcription

1 ISA 2006 and OWA 2003 Implementation Guide Copyright Copyright 2006, CRYPTOCard Corp. All Rights Reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means without the written permission of CRYPTOCard Corp.

2 Outlook Web Access (OWA) & Internet Security and Acceleration (ISA) Server 2006 Overview This documentation presents an overview and necessary steps to configure Internet Security and Acceleration (ISA) Server It is to be used in conjunction with Outlook Web Access (OWA) to view via web browser authenticating against CRYPTO-MAS Server, using CRYPTOCard tokens. CRYPTO-MAS works in conjunction with ISA Server 2006 and Outlook Web Access (OWA) to replace static passwords with strong two-factor authentication that prevents the use of lost, stolen, shared, or easily guessed passwords when establishing a connection to gain access to protected resources. With CRYPTO-MAS acting as the authentication server for a enabled resource, an authenticated connection sequence would be as follows: 1. The administrator configures ISA 2006 Server to use RADIUS Authentication. 2. The incoming authentication request is relayed over to the CRYPTO-MAS Server via RADIUS. ISA 2006 and OWA 2003 Implementation Guide 1

3 3. If the user exists, it then checks the token associated with the user for the expected PIN + One-time password. 4. Once the PIN + One-time password is verified against the user s token and it is valid, it will then send an access accepted. Prerequisites The following systems must be installed and operational prior to configuring the VPN concentrator to use CRYPTOCard authentication. Ensure that the end user can authenticate through Outlook Web Access with a static password before configuring the Outlook Web Access to use CRYPTOCard authentication. An initialized CRYPTOCard token assigned to a valid CRYPTOCard user. The following CRYPTO-MAS server information is also required. Primary CRYPTO-MAS RADIUS Server Fully Qualified Hostname or IP Address: Secondary CRYPTO-MAS RADIUS Server Fully Qualified Hostname or IP Address (OPTIONAL): CRYPTO-MAS RADIUS Authentication port number: CRYPTO-MAS RADIUS Accounting port number (OPTIONAL): CRYPTO-MAS RADIUS Shared Secret: ISA 2006 and OWA 2003 Implementation Guide 1

4 Configuring ISA 2006 Server for Two Factor Authentication via RADIUS Using the 'Task' Pane, click on 'Publish Exchange Web Client Access' Note: If you do not see the 'Task Pane' along the right hand side, navigate to the 'View' menu, and select 'Task Pane'. This will allow you too see all the available Firewall Policy Tasks. ISA 2006 and OWA 2003 Implementation Guide 2

5 Give your new rule a name such as Outlook Web Access. This can be anything you want. Select Exchange Server 2003 Select Outlook Web Access ISA 2006 and OWA 2003 Implementation Guide 3

6 Select the Publish a single Web site or load balancer radio button Select Use non-secured connections to connect the published Web server or server farm radio button. ISA 2006 and OWA 2003 Implementation Guide 4

7 Specify the address of the exchange server. E.G. Exchange.sparks.com Note: This must be a valid DNS name Input the address you want your users to use, in order to access their OWA logon page. Note: This has to be a valid DNS name. ISA 2006 and OWA 2003 Implementation Guide 5

8 Click on New to start the Web Listener creation wizard. The New Web Listener Wizard now appears. Give your Web Listener a name In this example, the given name is OWA ISA 2006 and OWA 2003 Implementation Guide 6

9 Select the Require SSL secured connections with clients radio button Select which networks your new listener will function on. In this example, Internal network has been chosen. You will need to specify your own network to use. ISA 2006 and OWA 2003 Implementation Guide 7

10 Click Select Certificate button Select your appropriate Certificate you have loaded onto your ISA server. Note: If you don t have any certificates loaded, please consult Microsoft Documentation on loading a Certificate onto your ISA 2006 Server. Ensure you have selected HTML Form Authentication in the drop down menu. Select Collect additional delegation credentials in the form **This check box adds an additional box at the bottom of the OWA page which allows the user to enter his static password for OWA ** Select RADIUS OTP check box ISA 2006 and OWA 2003 Implementation Guide 8

11 Un-check Enable SSO for Web sites published with this Web listener From the drop down menu, select NTLM authentication ISA 2006 and OWA 2003 Implementation Guide 9

12 In the next following screens you are going to configure the RADIUS server ISA will use. Click the Add button Input the Server name of the CRYPTO-MAS Server in the form of an IP address. Give this RADIUS Server entry a description to help you identify it for future configuration changes. Click the Change button to add the shared secret. Once you have inputted all information, click OK button. ISA 2006 and OWA 2003 Implementation Guide 10

13 Select which user groups you wish to have this rule applied to. In this example the All Users group was selected. The final wizard how now completed, and you are now completed. To access your new OWA page, navigate to The OWA logon page provided by ISA looks different than the usual OWA provided by exchange. It should also include a new field at the bottom, which includes the users static Microsoft password. ISA 2006 and OWA 2003 Implementation Guide 11