This is a new one on me. I have an wireless access point servicing three iPads, and a Windows SBS 2003 server running ISA 2004. I have configured the iPads with the proxy server settings using domain accounts and passwords for authentication. However, though the iPads can reach the Internet, they have problems accessing secure sites - and this affects accessing the user's mail from the Exchange server as well as the App Store - among many others. I'm hoping someone can help me understand the best solution for providing these iPads with unfettered access from behind the ISA 2004.