The follow-on to Apple Training Series: Mac OS X Deployment v10.6 and Apple Training Series: Mac OS X Directory Services v10.6, this volume takes an in-depth look at the many options provided to administrators to secure access to intranet services. System administrators and other IT professionals will learn how to configure Mac OS X Server v10.6 to provide secure access to vital network services such as web, mail, and calendar from mobile devices such as the iPhone. The Providing Network Services section covers establishing critical network services such as DNS, DHCP, and NAT/Gateway services. Systems & Services focuses on connecting private and public networks securely using firewalls, certificates and VPNs. Finally, the Working with Mobile Devices section teaches students how to successfully configure Snow Leopard Server's Mobile Access Server and securely deploy intranet services such as web, mail, and calendar services to mobile devices, such as the iPhone, without the need for VPN services.