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Dr. Tom Shinderamp;#039;s Configuring ISA Server 1002004 [Electronic resources] - نسخه متنی
Thomas W. Shinder; Debra Littlejohn Shinder
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Back Cover
Dr. Tom Shinder's Configuring ISA Server 2004
Introduction
Acknowledgments
About the Authors
Technical Editor
A Note From the Publisher
From Deb and Tom Shinder, Authors
Chapter 1: Evolution of a Firewall: From Proxy 1.0 to ISA 2004
The Book: What it Covers and Who It's For
It's in the Book: What We Cover
This Book's For You: Our Target Audience
Security: The New Star of the Show
Security: What's Microsoft Got to Do with It?
Security: A Policy-Based Approach
Security: A Multilayered Approach
Firewalls: The Guardians at the Gateway
Firewalls: History and Philosophy
Firewalls: Understanding the Architecture
Firewalls: Features and Functionality
Firewalls: Role and Placement on the Network
ISA: From Proxy Server to Full-Featured Firewall
ISA: A Glint in MS Proxy Server's Eye
ISA: A Personal Philosophy
Summary
Chapter 2: Examining the ISA Server 2004 Feature Set
The New GUI: More Than Just a Pretty Interface
Examining the Graphical Interface
Examining The Management Nodes
Teaching Old Features New Tricks
Enhanced and Improved Remote Management
Enhanced and Improved Firewall Features
Enhanced and Improved Virtual Private Networking and Remote Access
Enhanced and Improved Web Cache and Web Proxy
Enhanced and Improved Monitoring and Reporting
Multi-Networking Support
New Application Layer Filtering (ALF) Features
VPN Quarantine Control
Missing in Action: Gone but Not Forgotten
Live Media Stream Splitting
H.323 Gateway
Bandwidth Control
Active Caching
Summary
Solutions Fast Track
New GUI: More Than Just a Pretty Face
Teaching Old Features New Tricks
New Features on the Block
Missing in Action: Gone But Not Forgotten
Frequently Asked Questions
Chapter 3: Stalking the Competition: How ISA 2004 Stacks Up
Firewall Comparative Issues
The Cost of Firewall Operations
Specifications and Features
Comparing ISA 2004 to Other Firewall Products
ISA Server 2004 Comparative Points
Comparing ISA 2004 to Check Point
Comparing ISA 2004 to Cisco PIX
Comparing ISA 2004 to NetScreen
Comparing ISA 2004 to SonicWall
Comparing ISA 2004 to WatchGuard
Comparing ISA 2004 to Symantec Enterprise Firewall
Comparing ISA 2004 to Blue Coat SG
Comparing ISA 2004 to Open Source Firewalls
Summary
Comparing Architecture
Comparing Functionality
Comparing Cost
Solutions Fast Track
Firewall Comparative Issues
Comparing ISA 2004 to Other Firewall Products
Frequently Asked Questions
Chapter 4: ISA 2004 Network Concepts and Preparing the Network Infrastructure
Our Approach to ISA Firewall Network Design and Defense Tactics
Defense in Depth
ISA Firewall Fallacies
Software Firewalls are Inherently Weak
You Can't Trust Any Service Running on the Windows Operating System to be Secure
ISA Firewalls Make Good Proxy Servers, but I Need a 'Real Firewall' to Protect My Network
ISA Firewalls Run on an Intel Hardware Platform, and Firewalls Should Have 'No Moving Parts'
'I Have a Firewall and an ISA Server'
Why ISA Belongs in Front of Critical Assets
A Better Network and Firewall Topology
Tom and Deb Shinder's Configuring ISA 2004 Network Layout
Creating the ISALOCAL Virtual Machine
How ISA Firewall’s Define Networks and Network Relationships
ISA 2004 Multinetworking
The ISA Firewall’s Default Networks
Creating New Networks
Controlling Routing Behavior with Network Rules
The ISA 2004 Network Objects
ISA Firewall Network Templates
Dynamic Address Assignment on the ISA Firewall’s External Interface
Dial-up Connection Support for ISA firewalls, Including VPN Connections to the ISP
“Network Behind a Network” Scenarios (Advanced ISA Firewall Configuration)
Web Proxy Chaining as a Form of Network Routing
Firewall Chaining as a Form of Network Routing
Configuring the ISA Firewall as a DHCP Server
Summary
Solutions Fast Track
Our Approach to the ISA Firewall Network Design and Defense Tactics
Tom and Deb Shinder's Configuring ISA 2004 Network Layout
How ISA Firewalls Define Networks and Network Relationships
Frequently Asked Questions
Chapter 5: ISA 2004 Client Types and Automating Client Provisioning
Understanding ISA 2004 Client Types
Understanding theISA 2004 SecureNAT Client
Name Resolution for SecureNAT Clients
Name Resolution and 'Looping Back' Through the ISA 2004 Firewall
Understanding the ISA 2004 Firewall Client
ISA 2004 Web Proxy Client
ISA 2004 Multiple Client Type Configuration
Deciding on an ISA 2004 Client Type
Automating ISA 2004 Client Provisioning
Configuring DHCP Servers to Support Web Proxy and Firewall Client Autodiscovery
Configuring DNS Servers to Support Web Proxy and Firewall Client Autodiscovery
Special Considerations for VPN Clients
Automating Installation of the Firewall Client
Configuring Firewall Client and Web Proxy Client Configuration in the ISA Management Console
Group Policy Software Installation
Silent Installation Script
Systems Management Server (SMS)
Summary
Solutions Fast Track
Understanding the ISA 2004 SecureNAT Client
Understanding the ISA 2004 Web Proxy Client
Understanding the ISA 2004 Firewall Client
Frequently Asked Questions
Chapter 6: Installing and Configuring the ISA Firewall Software
Pre-installation Tasks and Considerations
System Requirements
Configuring the Routing Table
DNS Server Placement
Configuring the ISA Firewall's Network Interfaces
Unattended Installation
Installation via a Terminal Services Administration Mode Session
Performing a Clean Installation on a Multihomed Machine
Default Post-installation ISA Firewall Configuration
The Post-installation System Policy
Performing an Upgrade Installation
Performing a Single NIC Installation (Unihomed ISA Firewall)
Quick Start Configuration for ISA Firewalls
Configuring the ISA Firewall's Network Interfaces
Installing and Configuring a DNS Server on the ISA Server Firewall
Installing and Configuring a DHCP Server on the ISA Server Firewall
Installing and Configuring the ISA Server 2004 Software
Configuring the Internal Network Computers
Hardening the Base ISA Firewall Configuration and Operating System
ISA Firewall Service Dependencies
Service Requirements for Common Tasks Performed on the ISA Firewall
Client Roles for the ISA Firewall
Lockdown Mode
Connection Limits
DHCP Spoof Attack Prevention
Summary
Solutions Fast Track
Pre-installation considerations
Performing a clean installation
Default Post-install System Policy and Firewall Configuration
Frequently Asked Questions
Chapter 7: Creating and Using ISA 2004 Firewall Access Policy
Introduction
ISA Firewall Access Rule Elements
Protocols
User Sets
Content Types
Schedules
Network Objects
The Rule Action Page
The Protocols Page
The Access Rule Sources Page
The Access Rule Destinations Page
The User Sets Page
Access Rule Properties
The Access Rule Context Menu Options
Configuring RPC Policy
Configuring FTP Policy
Configuring HTTP Policy
Ordering and Organizing Access Rules
How to Block Logging for Selected Protocols
Disabling Automatic Web Proxy Connections for SecureNAT Clients
Using Scripts to Populate Domain Name Sets
Using the Import Scripts
Extending the SSL Tunnel Port Range for Web Access to Alternate SSL Ports
Avoiding Looping Back through the ISA Firewall for Internal Resources
Anonymous Requests Appear in Log File Even When Authentication is Enforced For Web (HTTP Connections)
Blocking MSN Messenger using an Access Rule
Allowing Outbound Access to MSN Messenger via Web Proxy
Changes to ISA Firewall Policy Only Affects New Connections
Configure the Routing Table on the Upstream Router
Configure the Network Adaptors
Install the ISA Server 2004 Firewall Software
Install and Configure the IIS WWW and SMTP Services on the DMZ Server
Create the DMZ Network
Create the Network Rules Between the DMZ and External Network and for the DMZ and Internal Network
Create Server Publishing Rule Allowing DNS from DMZ to Internal
Create an Access Rule Allowing DNS from Internal to External
Create an Access Rule Allowing DNS from Internal to External
Create an Access Rule Allow HTTP from External to DMZ
Create an Access Rule Allowing SMTP from External to DMZ
Test the Access Rules from External to DMZ
Test the DNS Rule from the DMZ to the Internal Network
Change the Access Rule Allowing External to DMZ by Disabling the Web Proxy Filter
Allowing Intradomain Communications through the ISA Firewall
Solutions Fast Track
Configuring Access Rules for Outbound Access through the ISA Firewall
Using Scripts to Populate Domain Name Sets
Creating and Configuring a Public Address Trihomed DMZ Network
Frequently Asked Questions
Chapter 8: Publishing Network Services with ISA 2004 Firewalls
Overview of Web Publishing and Server Publishing
Web Publishing Rules
Server Publishing Rules
The Select Rule Action Page
The Define Website to Publish Page
The Public Name Details Page
The Select Web Listener Page and Creating an HTTP Web Listener
The User Sets Page
The Web Publishing Rule Properties Dialog Box
Creating and Configuring SSL Web Publishing Rules
SSL Bridging
Importing Web Site Certificates into The ISA Firewall's Machine Certificate Store
Requesting a User Certificate for the ISA Firewall to Present to SSL Web Sites
Creating an SSL Web Publishing Rule
Creating Server Publishing Rules
The Server Publishing Rule Properties Dialog Box
Server Publishing HTTP Sites
Creating Mail Server Publishing Rules
The Web Client Access: Outlook Web Access (OWA), Outlook Mobile Access, Exchange Server ActiveSync Option
The Client Access: RPC, IMAP, POP3, SMTP Option
Summary
Solutions Fast Track
Overview of Web Publishing and Server Publishing
Creating and Configuring Non-SSL Web Publishing Rules
Creating and Configuring SSL Web Publishing Rules
Frequently Asked Questions
Chapter 9: Creating Remote Access and Site-to-Site VPNs with ISA Firewalls
Overview of ISA Firewall VPN Networking
Firewall Policy Applied to VPN Client Connections
Firewall Policy Applied to VPN Site-to-Site Connections
VPN Quarantine
User Mapping of VPN Clients
SecureNAT Client Support for VPN Connections
Site-to-Site VPN Using Tunnel Mode IPSec
Publishing PPTP VPN Servers
Pre-shared Key Support for IPSec VPN Connections
Advanced Name Server Assignment for VPN Clients
Monitoring of VPN Client Connections
Creating a Remote Access PPTP VPN Server
Enable the VPN Server
Create an Access Rule Allowing VPN Clients Access to Allowed Resources
Enable Dial-in Access
Test the PPTP VPN Connection
Issue Certificates to the ISA Firewall and VPN Clients
Test the L2TP/IPSec VPN Connection
Monitor VPN Clients
Using a Pre-shared Key for VPN Client Remote Access Connections
Creating a PPTP Site-to-Site VPN
Create the Remote Site Network at the Main Office
Create the Network Rule at the Main Office
Create the Access Rules at the Main Office
Create the VPN Gateway Dial-in Account at the Main Office
Create the Remote Site Network at the Branch Office
Create the Network Rule at the Branch Office
Create the Access Rules at the Branch Office
Create the VPN Gateway Dial-in Account at the Branch Office
Activate the Site-to-Site Links
Enable the System Policy Rule on the Main Office Firewall to Access the Enterprise CA
Request and install a Web Site Certificate for the Main Office Firewall
Configure the Main Office ISA Firewall to Use L2TP/IPSec for the Site-to-Site Link
Enable the System Policy Rule on the Branch Office Firewall to Access the Enterprise CA
Request and Install a Web Site Certificate for the Branch Office Firewall
Configure the Main Office ISA Firewall to Use L2TP/IPSec for the Site-to-Site Link
Activate the L2TP/IPSec Site-to-Site VPN Connection
Configuring Pre-shared Keys for Site-to-Site L2TP/IPSec VPN Links
IPSec Tunnel Mode Site-to-Site VPNs with Downlevel VPN Gateways
Using RADIUS for VPN Authentication and Remote Access Policy
Configure the Internet Authentication Services (RADIUS) Server
Create a VPN Clients Remote Access Policy
Remote Access Permissions and Domain Functional Level
Changing the User Account Dial-in Permissions
Changing the Domain Functional Level
Controlling Remote Access Permission via Remote Access Policy
Enable the VPN Server on the ISA Firewall and Configure RADIUS Support
Create an Access Rule Allowing VPN Clients Access to Approved Resources
Make the Connection from a PPTP VPN Client
Using EAP User Certificate Authentication for Remote Access VPNs
Configuring the ISA Firewall Software to Support EAP Authentication
Enabling User Mapping for EAP Authenticated Users
Issuing a User Certificate to the Remote Access VPN Client Machine
Supporting Outbound VPN Connections through the ISA Firewall
Installing and Configuring the DHCP Server and DHCP Relay Agent on the ISA Firewall
Creating a Site-to-Site VPN Between an ISA Server 2000 and ISA Firewall
Run the Local VPN Wizard on the ISA Server 2000 firewall
Change the Password for the Remote VPN User Account
Change the Credentials the ISA Server 2000 Firewall uses for the Demand-dial Connection to the Main Office
Change the ISA Server 2000 VPN Gateway's Demand-dial Interface Idle Properties
Create a Static Address Pool for VPN Clients and Gateways
Run the Remote Site Wizard on the Main Office ISA firewall
Create a Network Rule that Defines the Route Relationship Between the Main and Branch Office
Create Access Rules Allowing Traffic from the Main Office to the Branch Office
Create the User Account for the Remote VPN Router
Test the connection
A Note on VPN Quarantine
Summary
Solutions Fast Track
Overview of ISA Firewall VPN Networking
Creating a Remote Access PPTP VPN Server
Creating a Remote Access L2TP/IPSec Server
Frequently Asked Questions
Chapter 10: ISA 2004 Stateful Inspection and Application Layer Filtering
Introduction
Application Filters
The SMTP Filter and Message Screener
The DNS Filter
The POP Intrusion Detection Filter
The SOCKS V4 Filter
The FTP Access Filter
The H.323 Filter
The MMS Filter
The PNM Filter
The PPTP Filter
The RPC Filter
The RTSP Filter
Web Filters
The HTTP Security Filter (HTTP Filter)
The ISA Server Link Translator
The Web Proxy Filter
The SecurID Filter
The OWA Forms-based Authentication Filter
The RADIUS Authentication Filter
IP Filtering and Intrusion Detection/Intrusion Prevention
Common Attacks Detection and Prevention
DNS Attacks Detection and Prevention
IP Options and IP Fragment Filtering
Summary
Solutions Fast Track
Application Layer Filters
Web Filters
Intrusion Detection and Prevention
Frequently Asked Questions
Chapter 11: Accelerating Web Performance with ISA 2004 Caching Capabilities
Understanding Caching Concepts
Web Caching Types
Web Caching Architectures
Web Caching Protocols
Understanding ISA Server 2004's Web Caching Capabilities
Using the Caching Feature
Understanding Cache Rules
Understanding the Content Download Feature
Configuring ISA Server 2004 as a Caching Server
Enabling and Configuring Caching
How to Configure Caching Properties
Creating Cache Rules
Configuring Content Downloads
Summary
Fast Track
Frequently Asked Questions
Chapter 12: Using ISA Server 2004's Monitoring, Logging, and Reporting Tools
Introduction
Exploring the ISA Server 2004 Dashboard
Dashboard Sections
Configuring and Customizing the Dashboard
Creating and Configuring ISA Server 2004 Alerts
Alert-triggering Events
Viewing the Predefined Alerts
Creating a New Alert
Modifying Alerts
Viewing Triggered Alerts
Monitoring ISA Server 2004 Connectivity, Sessions, and Services
Configuring and Monitoring Connectivity
Monitoring Sessions
Monitoring Services
Working with ISA Server 2004 Logs and Reports
Understanding ISA Server 2004 Logs
Generating, Viewing, and Publishing Reports with ISA Server 2004
Using ISA Server 2004's Performance Monitor
Solutions Fast Track
Exploring the ISA Server 2004 Dashboard
Creating and Configuring ISA Server 2004 Alerts
Monitoring ISA Server 2004 Sessions and Services
Working with ISA Server 2004 Logs and Reports
1Using ISA Server 2004's Performance Monitor
Frequently Asked Questions
Appendix: Network Security Basics
Introduction
Security Overview
Defining Basic Security Concepts
Knowledge is Power
Think Like a Thief
Security Terminology
Addressing Security Objectives
Controlling Physical Access
Preventing Accidental Compromise of Data
Preventing Intentional Internal Security Breaches
Preventing Unauthorized External Intrusions
Recognizing Network Security Threats
Understanding Intruder Motivations
Classifying Specific Types of Attacks
Designing a Comprehensive Security Plan
Evaluating Security Needs
Understanding Security Ratings
Legal Considerations
Designating Responsibility for Network Security
Designing the Corporate Security Policy
Educating Network Users on Security Issues
Incorporating ISA Server in your Security Plan
ISA Server Intrusion Detection
Implementing a System Hardening Plan with ISA
Summary
Index
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Z
List of Figures
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List of Sidebars
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Z
zombies, 1031
zones, security, and firewall rings,
67-75