SDN Captive Portal

Introduction
Captive portal is a networking solution which performs authentication of the users before granting them network access. It secures the network from unwanted and unauthorized access by providing a landing web page where all the browser’s requests from an unauthenticated user are redirected and authentication is performed. Traditionally a captive portal solution is implemented on the networking device itself by enabling the device to redirect the browser’s requests from unauthenticated users. In a SDN environment we can separate the logic from the device to a centralized controller platform and write our own applications for networking solutions. In this post we explain a captive portal solution for Software Defined Networking (SDN) infrastructure. Continue reading