This book presents the revised version of seven tutorials given at the NETWORKING 2002 Conference in Pisa, Italy in May 2002 The lecturers present a coherent view of the core issues in the following areas: - peer-to-peer computing and communications - mobile computing middleware - network security in the multicast framework - categorizing computing ожуьи assets according to communication patterns - remarks on ad-hoc networking - communication through virtual technologies - optical networks.  ClassicISBN 3540001654.