TY CONF TI CONSIDERATION OF A MEANS OF PROTECTING INFORMATION FROM UNAUTHORIZED ACCESS "BLOKHOST NETWORK 3" KW information security KW information system KW security KW access KW government information systems JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Sitnikov, A.A. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov