Динамічний Багатокритеріальний Вибір VPN-Сервера В Корпоративних Мережах З Урахуванням Показників Якості Обслуговування Та Серверного Навантаження

Introduction. To develop and evaluate a two-stage method for dynamic VPN server selection in a corporate network, considering Quality of Service (QoS) metrics and current server load. Materials and Methods. The proposed method involves the preliminary exclusion of unavailable or non-operational servers, followed by multicriteria ranking of eligible alternatives using a composite score. Criterion weights were determined using the Analytic Hierarchy Process (AHP), while a hysteresis mechanism was employed to ensure selection stability. The method was evaluated through simulation and a pilot deployment on a WireGuard-based VPN infrastructure. Results. Compared with equal criterion weighting, the use of traffic-profile-specific weights reduced the mean round-trip time (RTT) by 24.6% for network A and 21.5% for network B. The pilot evaluation confirmed the technical feasibility of the proposed method and demonstrated the need to consider VPN tunnel availability, provider-imposed concurrent-session limits, and potential conflicts between client configurations. Conclusions. The proposed method enables comprehensive VPN server assessment and stable switching under changing network conditions. However, the findings are limited to the investigated scenarios and require further validation in a larger-scale corporate VPN infrastructure.