
ISA Server 2000 Exchange
2000/2003 Secure Remote Email Access Deployment Kit Table of Contents
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This is the Table of Contents for the ISA Server
2000 Exchange 2000/2003 Secure Remote Email Access Deployment Kit.
1.
Better Together – ISA Server 2000
and Exchange 2000/2003 [DOC] [ZIP]
We've put this tremendous kit together on how to provide secure remote access to
all the Exchange Server services using ISA Server firewalls. But why? Is there
something special about ISA Server 2000 that makes providing
remote access to Exchange Server services better or more secure? Of course this
is! This documents provides all the reasons why you want to use ISA Server 2000
to provide your remote email users secure remote access to your Exchange Server.
2.
How to use the ISA Server
2000/Exchange 2000/2003 Deployment Kit [DOC] [ZIP]
The ISA Server 2000 Exchange 2000/2003
Deployment Kit contains all the information you need to provide a highly
available and secure remote access solution for you remote email users. This
document walks you through the design goals of the kit and provides information
on how to use the kit and some tips and tricks on how to optimize the design and
configuration strategies included herein.
3.
Configuring DNS to Support
Exchange Server Publishing [DOC] [ZIP]
One of the most confusing aspects of any remote access
solution to Exchange services is configuring public and private DNS entries correctly
so that machines can connect to the Exchange Server regardless of their
location. This article also discusses a number of other problematic DNS issues
relating to remote access to Exchange services.
4.
Configuring Outbound Access for the Exchange 2003 SMTP
Service [DOC] [ZIP]
The Exchange SMTP service needs outbound access to Internet SMTP servers. You
won’t be able to send mail to other Internet users if the Exchange Server isn’t allowed outbound access to these external SMTP
servers. This article discusses methods you can use to allow the Exchange SMTP
service to reliably send mail to users in other Internet mail domains.
5.
Secure Exchange 2003 SMTP/SMTPS publishing [DOC] [ZIP]
You may wish to allow your remote users access to the Exchange Server’s SMTP
service. Remote users without access to a secure SMTP server can connect to the
Exchange Server’s SMTP service and send SMTP mail using a secure link.
Intruders will not be able to view the contents of messages send via the secure
SMTP link with the Exchange Server’s SMTP service. POP3 and IMAP4 users benefit
from secure Exchange SMTP server publishing. This article walks you through
each procedure.
6.
Secure Exchange 2003 IMAP4/IMAP4 publishing [DOC] [ZIP]
IMAP4 allows your remote users to access all folders in their message store and
download only the message headers without incurrent the bandwidth drain from
downloading every messages contained in the users mailbox. You can secure
remote access to your Exchange IMAP4 service using TLS/SSL security. Intruders
will not be able to view information moving over the secure IMAP4 link. This
article shows you all the steps required to allow remote IMAP4 access.
7.
Exchange 2003 POP3/Secure POP3 publishing [DOC] [ZIP]
POP3 access to the users Exchange messages store is one of the most popular
remote access methods used to connect to the Exchange Server form a remote
location. Almost all users have connected and download mail from POP3 server.
You can secure the connection between the email client and the Exchange Server
using TLS/SSL and prevent intruders from reading remote access users’ mail.
This article gives the step by steps on how to make it happen.
8.
Secure Remote Access for the full Outlook 2000/2002/2003
MAPI Client [DOC] [ZIP]
Corporate users accustomed to full Outlook MAPI access to the Exchange Server
while connected to the internal network often are disappointed that they can’t
access the full feature set included with the Outlook 2000/2002/2003 client
when connected to a remote network. ISA Server 2000 allows you remote users to
connect to the Exchange Server and get all the features they’ve come to love
when on the Internet network. This article explains how to allow them to use
the full Outlook MAPI client while connected to a remote network.
9.
Publishing Secure Outlook Web
Access (OWA) Web sites [DOC] [ZIP]
Outlook Web Access (OWA) is one of the most popular methods for remote access
to the Exchange Server. OWA provides a substantial subset of the feature set
available to the full Outlook client. You can provide remote access to the
Exchange OWA site with a very high level of security using a combination of security
technologies. This article describes how to get it all done.
10.
Secure ISA Server 2000 RPC over HTTP Publishing using
Outlook 2003 and Exchange 2003 [DOC] [ZIP]
Outlook 2003 and Exchange 2003 partner up to provide a new and improved way to
connect to Exchange from remote locations using the RPC over HTTP protocol.
This new protocol allows any Outlook 2003 client to access the entire range of
Exchange 2003 services from any location in the world, from behind virtually
any type of firewall. The Outlook 2003 client only needs outbound access to
HTTP/HTTPS. This article gives you the fine details on how to allow eminently
secure connections to Exchange using RPC over HTTP.
11.
ISA Server 2000 in a Front End/Back End Exchange ISA
Server Configuration [DOC] [ZIP]
The front-end/back-end Exchange Server configuration is a popular way of
providing load balancing and fault tolerance for an Exchange organization. The
front-end/back-end configuration can also enhance security for your remote
access mail clients. This article provides the step by step details required to
allow OWA/SMTP/POP3/IMAP mail clients access to
Exchange and do it in the most secure way possible.
12.
Configuring the Windows Server 2003-based ISA Server
2000 Firewall as a Filtering SMTP Relay [DOC] [ZIP]
Spam is something we all have to worry about. ISA Server addresses the spam
problem with its SMTP Message Screener. The SMTP Message Screener can filter
SMTP mail using source address, source domain, keywords and attachment
filtering. The SMTP Message Screener can be installed
on the ISA firewall, an independent SMTP relay on the internal network, or on
the Exchange Server itself. If you don’t have the resources to put the SMTP filter
on a dedicated SMTP relay on the internal network, then put it on the ISA
firewall. This article gives you all the details on how to make it happen.
13.
Configuring a Windows Server
2003-based ISA Server as a Secure Authenticating SMTP Relay [DOC] [ZIP]
Remote users often connect to hotel networks that don’t provide them with an
SMTP server to send outbound mail. If your remote users use POP3 or IMAP4 to
connect to the Exchange Server, then they need access to an SMTP server. You
can create a secure, authenticating SMTP server on the ISA Server firewall
itself that you users can connect to and send mail to anyone in the world. The
ISA firewall can also act as an SMTP relay that accepts inbound SMTP messages
for your domains and reject mail from spammers attempting to use it as an
anonymous relay. This article provides all the details required to allow a secure authenticating SMTP relay and an anonymous
inbound SMTP relay for mail destined to your own mail domains.
14.
How to Obtain a Web Site Certificate [DOC] [ZIP]
Exchange Server services require a Web site certificate before they can
establish a secure SSL/TLS connection with a remote email client. This article
shows you how to obtain the certificate and bind it to the secure Exchange
Service.
15. Installing and Configuring the Windows Server
2003-based ISA Server 2000 SMTP Filter and Message Screener on the ISA Server
Firewall [DOC] [ZIP]
Want to run the SMTP Message Screener on the ISA firewall and not waste
resources on a second machine or risk putting it on the Exchange Server? Here’s
your fix. This article gives the details on how to make it happen. This article
extends the information provided in the Configuring the Windows Server 2003-based ISA Server
2000 Firewall as a Filtering SMTP Relay article.
16. Configuring a Secure Internal
SMTP Relay with the SMTP Filter and Message Screener [DOC] [ZIP]
For organizations that can spare an extra machine on the internal network, the
most secure and best performance solution is to put a secure SMTP relay and
spam whacking SMTP Message Screener on a machine running the IIS SMTP service
on the internal network. If you have a machine that you can run the IIS SMTP
service on (that is not the ISA firewall itself or the Exchange Server), then
check out this article for all the step by step details required to make it
work.
17. Publishing Outlook Web Access with a Single NIC Web
Caching ISA Server [DOC] [ZIP]
Many organizations already have a firewall solution in place but they still
want to take advantage of the unique layer 7 protection that only an ISA Server
firewall and provide for remote access to OWA sites. This article discusses how
you can use a single NIC (unihomed) caching-only in a DMZ between two other
firewalls to provide highly secure remote access to the OWA site on the
internal network. Every step is demonstrated and documented
in this article.
18. Increasing OWA Security by
Configuring the ISA Server to Present a Client Certificate to an OWA Web site [DOC] [ZIP]
If you have a caching-only ISA Server on the DMZ and a non-ISA firewall behind
the ISA Server protecting the internal network, you will need a higher level of
security than what your non-ISA firewall can provide. In this article we
discuss how you can force the ISA Server caching-only proxy server to present a
certificate to the OWA Web site before a connection is
established to the OWA Web site. This prevents other computers on the
DMZ from connecting to the OWA site in the event that they
are violated by an intruder.
19. Enhance Outlook Web Access Publishing with Client
Certificate Authentication [DOC] [ZIP]
Users can connect to the ISA Server firewall using a secure SSL connecting and
sending basic or integrated authentication. You can enhance the authentication
security for inbound access to the OWA site by requiring not only user
credentials in the form of user name and password, but also require a user
certificate. This “two factor” authentication provides a very high level of
authentication security for your OWA site. Step by step instructions are
included for all the required procedures.
20. How to Import the Root CA Certificate into Email Client
Certificate Stores [DOC] [ZIP]
Remote clients connecting to the Exchange Server’s mail services need the root
CA certificate from the CA that issued the certificate to the Exchange Server
service that client makes a secure connection to. The root CA certificate is
required to create a secure SMTP/POP3/IMAP4/NNTP/OWA or RPC over HTTP connection.
This article provides the details on how to import the CA certificate into the
email client’s Trusted Root Certificate Store.
21. Configuring Outlook Express [DOC] [ZIP]
This article goes over all the details, step by step,
on how to configure the Outlook Express email client to use secure and non-secure
forms of SMTP, POP3 and IMAP4 to connect to the Exchange Server published
behind the ISA Server firewall.
22. Configuring Outlook 2000 [DOC] [ZIP]
This article goes over all the details on how to configure the Outlook 2000
client to connect to the Exchange Server using secure and non-secure forms of
SMTP and POP3. In addition, this document covers the unique configuration
issues that must be addressed to allow a successful
connection via secure Exchange RPC publishing.
23. Configuring Outlook 2002 [DOC] [ZIP]
In this article we discuss how to configure the
Outlook 2002 clients to connect to the Exchange Server through ISA Server publishing
rules. The discussion includes connecting the Outlook 2002 client to create
secure and non-secure connections to the Exchange Server using the
SMTP/POP3/IMAP4 and secure Exchange RPC protocols. Each procedure includes all
the step by step details required to create the connection.
24.
Configuring Outlook 2003 [DOC] [ZIP]
This article covers all the details, step by step,
that you need to configure the Outlook 2003 client to create secure and
non-secure SMTP/POP3/IMAP4/RPC and RPC over HTTP connections. Special attention
goes into the details on how to configure the Outlook 2003 client to create the
new RPC over HTTP connection to the Exchange 2003 server in a highly secure
fashion.
25.
Creating
an Enterprise CA
[DOC] [ZIP]
An enterprise CA is the Certificate Authority of choice when you have deployed a
Windows 2000 or Windows 2003 Active Directory domain. All users and computers in
an Active Directory can be automatically assigned certificates using Group
Policy based autoenrollment. And if you don't want to use autoenrollment, you
can use the Certificates MMC snap-in to obtain a user or computer certificate.
This document provides all the step by step details you need to install and
configure an enterprise CA on a Windows Server 2003 computer.
26.
Creating
the standalone CA
[DOC] [ZIP]
Standalone CAs are useful when you cannot install a Certificate Authority on a
machine that is a member of an Active Directory domain. If you find yourself in
the situation where you cannot install the Microsoft Certificate Server on a
domain member server, then check out the Standalone CA. This document provides
all the step by step details you need to install and configure a standalone CA
on Windows Server 2003.
27.
Issuing
certificates via autoenrollment
[DOC] [ZIP]
Assigning machine and user certificates can be a laborious process. The best way
to automate certificate assignment is by using certificate autoenrollment. All
the machines in the Exchange Server domain can be automatically assigned a
machine certificate and have the root CA certificate automatically added to its
Trusted Root Certification Authorities certificate store.
28.
Issuing
certificates via the MMC snap-in
[DOC] [ZIP]
One of the major advantages to using an enterprise CA is that the Certificates
MMC console is available to you to request machine certificates. The
Certificates MMC makes it very easy for domain members to request a machine
certificate that can be used to create an SSL or IPSec connection with another
machine.
29.
Issuing
certificates via the enterprise CA Web enrollment site
One of the primary advantages of using an enterprise CA is that you can issue
certificates either via the Certificates MMC snap-in or via autoenrollment. Some
organizations do not want to use autoenrollment and some prefer not to use the
Certificates MMC. In those situations where autoenrollment and the MMC are not
viable options, you can obtain use and machine certificates via the enterprise
CA's Web enrollment site. This document gives you all the step by steps required
to obtain the certificate your Exchange mail client needs to authenticate and
establish a secure link.
30.
Issuing
certificates via the standalone CA Web enrollment site
Organizations that don't have an enterprise CA in place can use a standalone CA
to assign user and machine certificates. You can't use the Certificates MMC or
autoenrollment to assign certificates from a standalone CA, but you can use the
Web enrollment site. This article shows you how to obtain a machine certificate
from the standalone CA's Web enrollment site.
31.
Publishing
the Web enrollment site
[DOC] [ZIP]
You may want to publish the Web enrollment site for either a standalone or
enterprise CA. This allows remote clients to obtain a CA certificate. The remote
email clients require the CA certificate to establish a secure connection to the
SMTP/POP3/IMAP4/OWA and other secure Exchange Services. This article has all the
step by step details required to published your CA's Web enrollment site to the
Internet using a ISA Server Web Publishing Rule.
32.
Installing
ISA Server 2000 on Windows Server 2003
[DOC] [ZIP]
While installing an ISA Server 2000 firewall on Windows 2000 is straightforward,
there are some tricks you need to perform to make things work right. This
article provides all the step by step details you need to get ISA Server 2000
installed and working on a Windows Server 2003 computer.
If you have suggestions or comments, let me know at tshinder@shinder.net Thanks! --Tom
