TABLE OF CONTENTS There are several key pre-installation and tasks and considerations you need to address before installing the ISA firewall software. These include:
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
The following are requirements for installing the ISA firewall software:
Intel or AMD system with a 773 megahertz (MHz) or higher processor
Microsoft Windows Server 2003 32-bit operating system with Service Pack 1 (SP1) or Microsoft Windows Server 2003 R2 32-bit.
A practical minimum of 512 MB of memory for non-Web caching systems, and 1000 MB for Web-caching ISA firewalls
At least one network adapter; two or more network adapters are required to obtain stateful filtering and stateful application-layer inspection firewall functionality
An additional network adapter for each network connected to the ISA Server computer
One local hard-disk partition that is formatted with the NTFS file system, and at least 150 MB of available hard disk space (this is exclusive of hard-disk space you want to use for caching)
Additional disk space, which ideally is on a separate spindle, if you plan on using the ISA firewall s Web-caching feature
Another important consideration is capacity planning. While the above reflects minimal system requirements for installing and running the ISA firewall software, the ideal configuration is obtained when you size the hardware to optimize the ISA firewall software performance for your site. Table 3.1 provides basic guidelines regarding processor, memory,...
