This book constitutes the proceedings of the 24th International Conference, PAM 2023, held as a virtual event, March 21–23, 2023. The 18 full papers and 9 short papers presented in this volume were carefully reviewed and selected from 80 submissions. The papers are organized in the following topical sections: VPNs and Infrastructure; TLS; Applications; Measurement Tools; Network Performance; Topology; Security and Privacy; DNS; and Web.