Content Summary : Learn how to integrate iPhone and iPod touch with your enterprise systems. This guide is for system administrators. It provides information about deploying and supporting iPhone and iPod touch in enterprise environments. System Requirements Read this section for an overview of the system requirements and the various components available for integrating iPhone and iPod touch with your enterprise systems. iPhone and iPod touch iPhone and iPod touch devices you use with your enterprise network must be updated with iPhone software 2.2 or later. iTunes iTunes 8.0 or later is required in order to set up a device. This version is also required in order to install software updates for iPhone or iPod touch, install applications, as well as to sync music, video, or other data with a Mac or PC... Certificates and Identities iPhone and iPod touch can use X.509 certificates with RSA keys. The file extensions .cer, .crt, and .der are recognized. Certificate chain evaluations are performed by Safari, Mail, VPN, and other applications. iPhone and iPod touch can use P12 (PKCS #12 standard) files that contain exactly one identity. The file extensions .p12 and .pfx are recognized. When an identity is installed, the user is prompted for the passphrase that protects it.