VPN design between sites that supports CGNAT and NAT traversal without modifying existing equipment.
This document explains the design of a site-to-site VPN for remotely maintaining network cameras and control devices at distant locations from the office. It covers how to determine the connection direction in a mobile line CGNAT environment, UDP 500/4500 and NAT-T, the issue of NAT tables dropping during periods of no communication, and methods to pass through existing devices without touching any of them using SNAT, focusing on four specific areas where issues were encountered. For more details, please refer to the technical column in the related links.
Inquire About This Product
basic information
【Technical Elements】 - Inter-site VPN (IPsec) - CGNAT environment and NAT traversal (NAT-T, UDP 500/4500) - Measures against NAT table timeout - Connection via SNAT without modification of existing equipment - Five items to verify with actual lines before implementation 【Category】Embedded Systems
Price range
Delivery Time
Applications/Examples of results
【Intended Use】 - Remote maintenance of network cameras and control devices in distant locations - Monitoring of on-site equipment connected via mobile lines - Reduction of labor and costs for on-site maintenance 【Examples of Achievements】 - Established a site-to-site VPN that allows remote maintenance from the office without changing the settings of any existing equipment on-site.
Company information
Technosphere Co., Ltd. is a system development company based in Osaka that tackles customer challenges in advanced technology areas such as AI, IoT, and web system development. Since its founding in 2021, the company has leveraged a flat team structure to achieve a flexible and speedy development style. We are engaged in solutions that directly address social issues, such as image inspection AI and smart factory support systems.
