http://blogs.technet.com/yuridiogenes/archive/2008/06/29/the-network-design-that-could-bring-you-down.aspx1. Introduction Recently I worked in a case where the ISA Server was not used only as an edge firewall but also as main concentrator of “ALL” network traffic. While this could really sound nice in terms of central management and security awareness ofen-USCommunityServer 2.1 SP1 (Build: 61025.2)