Welcome to LANOMS 2005, the Fourth Latin American Network Operations and Management Symposium, to be held in Brazil, in the state of Rio Grande do Sul. LANOMS is organized by the Federal University of Rio Grande do Sul (Institute of Informatics) and by the Universidade do Vale do Rio dos Sinos. The main goal of LANOMS is to create a Latin American forum in the area of network management focused on both the local and global audience involving networking and telecommunication companies, academic institutions, service providers and equipment vendors.

LANOMS is an event open to participants from all over the world who are interested in having, or already have, research or commercial liaisons in Latin America - one of the fastest growing regions in the world in networking and telecommunications. The first, second and thirth LANOMS were attended by participants from not only Latin America, but also North America, Europe and Asia. The program of the symposium will include presentations of technical papers, application papers, tutorials, panels and social events.

Lisandro Z. Granville Luciano P. Gaspary	Bruno Schulze José Neuman de Souza	Iara Machado Michael Stanton
General Co-Chairs	Technical Program Co-Chairs	Applications Co-Chairs