Where can I get M.Eng topics on telcomms Network security

Hello Sir ,

For Telephonic Lines ; whatever privacies and penetrations are possible - They are to be implemented in Network as well . Then , Intrusion indication is to be availabe in terminals . As well , witnessing linked moniters from one Terminal is to be there . Best instrument is used by each category of Personnel . To the Persons - as a Gift to the society : Network should render back - tracing . Few Random Expectations from my side - Please . Regards .