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  • Blog Post: Application Layer Firewalls and ISA Server 2004

    The role of the firewall in the world of security has and is continuing to change dramatically. It is not just about managing connections over specific ports at the perimeter anymore. We have ‘security’ devices protecting DMZ’s, providing remote access, securing applications and web services, segmenting...
  • Blog Post: Web Service Security and Pre-Authentication with ISA 2004

    I have written about ISA 2004 as an application layer firewall and gateway and how it is designed to help secure access to a variety of services – including providing secure external access to collaborative/mobile services like Exchange, SharePoint and LCS. Although content filtering, URL filtering,...
  • Blog Post: LCS Server, SIP and ISA Server 2004

    Mixing these technologies together has a mixed story behind them and can lead you into all kind of quagmires. Let’s briefly discuss where we are at today, what some additional things are to consider, why many challenges are faced and then I will discuss some new options. This article will in no way be...