Course 2824B: Implementing Microsoft internet security and acceleration server 2004 - Module 4

Module 4: Configuring ISA server as a firewall. This module explains how to configure ISA Server 2004 to provide firewall capabilities and restrict traffic into and out of the network. The module describes how to configure firewall policies and rules to provide specific functionality.
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Course 2824B: Implementing Microsoft internet security and acceleration server 2004 - Module 4 Module 4:Configuring ISA Server as a FirewallOverview Using ISA Server as a Firewall Examining Perimeter Networks and Templates Configuring System Policies Configuring Intrusion Detection and IP PreferencesLesson: Using ISA Server as aFirewall What Is a TCP/IP Packet? What Is Packet Filtering? What Is Stateful Filtering? What Is Application Filtering? What Is Intrusion Detection? How ISA Server 2004 Filters Network Traffic Implementing ISA Server 2004 as a FirewallWhat Is a TCP/IP Packet? Network Destination Address: 0003FFD329B0 Physical Interface Source Address: 0003FFFDFFFFpayload Layer Destination: 192.168.1.1 Internet IP Source: 192.168.1.10 Layer payload Protocol: TCP Destination Port: 80 Transport Source Port: 1159 TCP Layer Sequence: 3837066872 payload Acknowledgment: 2982470625 HTTP Request Method: Get Application HTTP Protocol Version: =HTTP/1.1 Layer HTTP Host: =www.contoso.comWhat Is Packet Filtering? Is the … Source address allowed? Web Destination address Server allowed? Protocol allowed? Destination port allowed? ISA Packet Filter ServerWhat Is Stateful Filtering? Connection Rules Create connection rule Web Is packet part of a Server connection? Web Server ISA ServerWhat Is Application Filtering? Get Get method Respond to www.contoso.co allowed? client m Web Server ISA Server Does the response contain only allowed content and methods?What Is Intrusion Detection? Alert the Port scan limit All ports scan administrator exceeded attack ISA ServerHow ISA Server 2004 Filters NetworkTraffic 3 Applicatio Web n filtering Filters Web 2Stateful and protocol Proxy Application filtering Filter Filters Firewa ll Rules Servic Engin e e Firewall Engine4 Kernel mode TCP/IP Packet data 1 filtering pumpImplementing ISA Server 2004 as aFirewall To Determine configure perimeter ISA Server as a firewall: network configuration Configure networks and network rules Configure system policy Configure intrusion detection Configure access rule elements and access rules Configure server and Web publishingPractice: Applying Firewall Concepts In this practice, you will analyze three scenarios describing an organization’s network security requirements and determine what firewall functionality is required in each scenarioLesson: Examining Perimeter Networksand Templates What Is a Perimeter Network? Why Use a Perimeter Network? Network Perimeter Configurations About Network Templates How to Use the Network Template Wizard Modifying Rules Applied by Network TemplatesWhat Is a Perimeter Network? Perimeter Network Firew all Firew all Intern et ...