1. WebADM/OpenOTP/Radius Bridge This guide explains how to deploy Network Access Control (NAC) using 802.1X protocol and OpenOTP. This solution can be applied both to Wireless LAN and wired LAN networks. For this recipe, you will need to have WebADM/OpenOTP installed and configured. Please, refer to WebADM Installation Guide and WebADM Manual to do so. You have also to install our Radius Bridge product on your WebADM server(s). For authentication, you have two possible mechanisms.