... reserved. Fortinet, FortiGate, FortiOS, FortiAnalyzer, FortiASIC, FortiLog, FortiCare, FortiManager, FortiWiFi, FortiGuard, FortiClient, and FortiReporter are registered trademarks of the Fortinet ... antispyware). Fortinet is privately held and based in Sunnyvale, California. FORTINET 1090 Kifer Road, Sunnyvale, CA 94086 USA Tel + 1-4 0 8-2 3 5-7 700 Fax + 1-4 0 8-2 3 5-7 737 www.fortinet.com ©2006 Fortinet, ... provides network / inter -network connectivity • The Access Layer – subscriber access network for devices such as DSL modems or mobile 3G handsets Exploring IMS Network Security for NGN...