Question about session management in WCF

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WCF

C#5.0

WCFServices

Hi guys

I want to ask about sessions in WCF
I work on big project and this project work on 3 part ( Server, Client app, Management system )

The server it's content databases for clients and WCF service that's holding and analysis all customer requests between server and client app.

So i want to create Management system that's based on server and can watch and control sessions.

For example i have client (A) this and i want to block this client from service by IP address. So how can i block client (A) from using the service when he work on it specifically ( on real time block ).

I can do this using database by adding field call (client permissions ) but it's work when i change the field on database but this way work only if customer do reconnect to service.