There was a NGN project in Brazilian Embratel. The NGN system needs to protect their information and customer benefits though a careful solution.
Challenges
The host office of the NGN service subsystems undertakes the core NGN services. If the host office is attacked, NGN services across the whole network are exposed to risks of interruption.
Solutions

Huawei security products can effectively identify and control complicated multi-media protocols such as H.323, SIP, and MGCP. so that, the Eudemon firewalls can work in complex multi-media environment. Therefore, secure and reliable services are provided and no network services are interrupted.
Gains
Security devices in the host office can effectively defend against network attacks and thus ensure fluid NGN services. When handling services with heavy traffic, the Eudemon firewalls can effectively guarantee security and fluidity of the network.
Products List
Eudemon 1000 *2