  Reliable and efficient functioning of a quantum network depends on
identifying and mitigating security risks originating from within and outside
the network. We aim to construct a comprehensive framework for developing and
assessing secure quantum networks. We articulate issues for making quantum
networks secure in general, summarise the state of the art and identify
priority directions for further investigation. Our analysis builds on the
secure communication protocols developed for classical layered network
architectures such as the open-systems interconnection (OSI) model and the
transmission control protocol/internet protocol (TCP/IP) model. Our work will
lead to the development of a hardware-independent framework for securing
general quantum networks that allows developers to identify mandatory security
mechanisms and incorporate additional security requirements of the clients
during design of the networks.
