TY JOUR TI Analysis of network communication problems of industrial enterprises with enterprise portals. KW network model KW open systems interconnection model KW layer KW enterprise portal KW industrial environ-ment KW protocol KW LAN KW network. JO Bulletin of Bryansk state technical university AU Rytov, M.Y. AU Kovalev, P.. PY 2015 IS 2015 PB Bryansk State Technical University