This volume presents the peer-reviewed proceedings of the 27th International Conference on Computer Networks (CN 2020). The conference, held virtually in June 2020 due to the COVID-19 pandemic, gathered researchers to discuss advancements in computer networking. The papers included were selected from a competitive pool of submissions, reflecting the latest developments in the field.

This collection of proceedings offers a snapshot of current research in computer networks as presented at CN 2020. The selection process, involving careful review of submissions, suggests a focus on rigorous academic contributions. The organization into topical sections on computer networks, cybersecurity, quality of service, and queueing theory indicates a structured approach to disseminating specialized knowledge within the field.