Resolving PRC Portal Session Drops in MikroTik Dual-WAN Environments Without Sacrificing Aggregated Bandwidth
Category: MikroTik RouterOS / Network Engineering • ROS Version: RouterOS v7 1. Executive Summary & Problem Statement In Dual-WAN RouterOS configurations utilizing Per Connection Classifier (PCC) with the both-addresses-and-ports classifier, network operators can successfully deliver aggregated bandwidth ("Combined Speed") across multi-threaded applications, video streaming, and speed tests. However, sensitive local infrastructure—specifically the Professional Regulation Commission (PRC) CPDAS portal ( cpdas.prc.gov.ph ) —frequently fails to load, returning ERR_CONNECTION_REFUSED or persistent HTTP connection timeouts. Root Cause Analysis Modern web portals enforce strict IP Session Tracking to prevent session hijacking. Under the both-addresses-and-ports PCC scheme, individual client HTTP/HTTPS requests (such as fetching static assets, scripts, or authentication tokens)...