Networking Research Topics?????????

My friends wants to do a Ph.d and wants to do a research on any networking topic..
She had asked me if i could get any topic..
I searched in the net and this is what i could find

Scheduling Cells in an Input-Queued Switch

Admission Control and Resource Management for ATM Networks

Pricing Issues in Multi-Service Networks

Functional Approximation Theorems for Controlled Queueing Networks

The BayBridge: a High Speed Bridge/Router between FDDI and SMDS

Internet Billing and Pricing

Physics of Gene Regulations

Models of Biological Circuits

Networks and communication

Evolution and dynamical systems

GFI LANguard Network Security Scanner: Port Scanner and Patch Management

Microsoft Dynamics CRM: Web-enabled Customer Relationship Management

State of Spyware: The Impact of Spyware on Consumers and Corporations

Secure Wireless Networking Using SSL VPNs

Addressing Wireless Security

I know most of them do not even come under the category of research in networking bu that is all i could find…
If anybody knows interesting networking research topics … Tell me about that