This book constitutes thoroughly refereed post-conference proceedings of the 5th International Conference on Computing and Network Communications, CoCoNet'23.The revised papers presented are carefully reviewed and selected from several initial submissions. The scope of the Symposium includes network-on-chip architectures and applications, future internet architecture and protocols, intelligent networked systems, IoT and smart cities, communications systems integration and modeling, and wireless and mobile communications. The book is directed to researchers and scientists engaged in network communications.