Traffic forwarding and disambiguation by using local proxies and addresses

US12212635B2 · kind B2 · utility

Assignee

• Akamai Technologies, Inc. · US

Inventors

• Seetharama Sarma Ayyadevara · San Jose, US
• Charles E. Gero · Quincy, US
• Stephan Benny · San Jose, US
• Pravin Tatti · Sunnyvale, US
• Manoj Kumar · Fremont, US
• Seemant Choudhary · Fremont, US
• Robert Lauro Quiros · Menlo Park, US
• Priyatham Phani Srinath Adigopula · Kanchinakote, IN
• Poornima Venkatesha · Milpitas, US
• Sumeet Gupta · Santa Monica, US

Key dates

• Filing date: Jan 3, 2023
• Grant date: Jan 28, 2025
• Expiry date: Jan 3, 2043

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L63/0272
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method of traffic forwarding and disambiguation through the use of local proxies and addresses. The technique leverages DNS to on-ramp traffic to a local proxy. The local proxy runs on the end user's device. According to a first embodiment, DNS is used to remap what would normally be a wide range of IP addresses to localhost based on 127.0.0.0/8 listening sockets, where the system can then listen for connections and data. In a second embodiment, a localhost proxy based on a TUN/TAP interface (or other packet interception method) with a user-defined CIDR range to which the local DNS server drives traffic is used. Requests on that local proxy are annotated (by adding data to the upstream connection).