The rapid development of "smart" devices leads to explosive growth of unprotected or partially protected home networks. These networks are easy prey for unauthorized access, the collection of personal information (including from surveillance cameras), interference in the operation of individual devices and the entire system as a whole. In addition, existing solutions for managing a smart house offer work in the cloud, which in turn reduces the availability of the system and simultaneously increases the risk of the unscrupulous use of personal information by the service provider (up to the sale of data to a third party). This article examines the existing access technologies, their weaknesses, and offers solutions to improve the overall security of the system with a local IoT gateway and virtual subnets.