Аннотация:This paper presents a system for monitoring andprediction of public WAN connection bandwidth - WARP.This system allows to schedule public WAN connection andguarantee SLA for connection bandwidth. The problem ofWAN connection monitoring is of significant interest to suchactively developing areas as SD-WAN, configurable CPE and5G that use WAN connection as a shared resource. Theproposed monitoring system combines utilization monitoringwith SDN and available bandwidth monitoring using a clientserver application, thus solving a problem of full bandwidthmonitoring without affecting existing flows. The proposedprediction method is based on confidence intervals forquantiles and returns a safe bandwidth estimation using themonitoring data. It can work with monitoring data fromdifferent monitoring systems. The experimental results showthat it can provide high accuracy and allows adjusting therelation between accuracy and resource utilization.