This document summarizes how to use Microsoft Internet Security and Acceleration (ISA) Server 2006 to securely publish Exchange Server client access. ISA Server can be used to secure communications between the internet and Exchange Server. It is located between the firewall and Exchange Server. The document reviews publishing Exchange client access methods like Outlook Anywhere and Exchange ActiveSync through configuring ISA Server and Exchange Server. It also discusses SSL bridging and link translation used to redirect HTTP to HTTPS on the ISA Server.