Tag: GPON

Passive Optical Networks (PONs) connect end-users to infrastructure using optical fibre in the last kilometre (Fibre-to-the-x). This article provides a technical overview of the security features in ITU-T specifications: Gigabit-capable PON (GPON), 10-Gigabit-capable PON (XG-PON), 10-Gigabit-capable Symmetric PON (XGS-PON), Next-generation PON 2 (NG-PON2), and 50-Gigabit-capable PON (50G-PON). The analysis covers authentication schemes, key derivation, encryption methods, and associated security implications.

An Optical Line Terminal (OLT) is the central device in a Fiber-To-The-Home (FTTH) network that connects and manages all customer connections, making it a critical control point in an ISP's infrastructure for delivering high speed Internet. This article uncovers how unauthenticated access to OLTs can lead to a full network takeover starting by exploiting exposed vulnerable devices, showing how to pivot into the cloud-based fleet manager using other vulnerabilities, and then compromising an ISP's entire infrastructure.