This book constitutes the refereed proceedings of the First International Conference on Distributed Computing and Internet Technology, ICDCIT 2004, held in Bhubaneswar, India in December 2004. The 47 revised papers presented together with 3 invited papers and 5 abstracts of invited or workshop papers were carefully reviewed and selected from 211 submissions. The papers are organized in topical sections on algorithms and modeling; systems, protocols, and performance; transactions and information dissemination; internet query and retrieval; protocol and replica management; ontologies and services; systems analysis and modeling; tools and techniques; systems security; intrusion detection and access control; networks and security; secured systems design; and security services.