Abstract
According to today's report, many of hackers' attacks occur on the application layer. How to detect and resist such intrusions in real time is a very important subject. The traditional network firewall is unable to offer 100% protection of existing data connections. It must do something different and improve defense level to application layer for the way to solve this problem. Recently, with advantages of high performance, low power consumption and easy expansion, the development platform of Intel IXP series becomes popular for network appliance designers to accelerate product developing. This platform regards network processor as its core. Users can study to create a new embedded system design by themselves, and then port system software to this platform to have software and hardware combine together. For the above reasons, this thesis presents a prototype of Secured Proxy which is designed and implemented based on Intel platform and Open Source. Our secured proxy can finally offer a better protection mechanism for network use with encrypted technology and deep packet inspection.