Microsoft Forefront Threat Management Gateway (Forefront TMG), formerly known as Microsoft Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache from Microsoft Corporation. It runs on Windows Server and works by inspecting all network traffic that passes through it.
Supported Operating System
Windows Server 2008
Minimum system requirements:
o Supported Operating Systems: Windows Server 2008 SP2 or Windows Server 2008 R2
o A computer with 2 core (1 CPU x dual core) 64-bit processor
o 2 gigabytes (GB) or more of memory
o 2.5 GB of available hard disk space. This is exclusive of hard disk space that you want to use for caching or for temporarily storing files during malware inspection
o One local hard disk partition that is formatted with the NTFS file system
o One network adapter that is compatible with the computer's operating system, for communication with the Internal network
o An additional network adapter for each network connected to the Forefront TMG server
Recommended system requirements:
o Supported Operating Systems: Windows Server 2008 SP2 or Windows Server 2008 R2
o A computer with 4 core (2 CPU x dual core or 1 CPU x quad core) 64-bit processor
o 4 gigabytes (GB) or more of memory
o 2.5 GB of available hard disk space. This is exclusive of hard disk space that you want to use for caching or for temporarily storing files during malware inspection
o Two disk for system and TMG logging, and one for caching and malware inspection
o One network adapter that is compatible with the computer's operating system, for communication with the Internal network
o An additional network adapter for each network connected to the Forefront TMG server