# Device Offline Issue with STUN Server Configuration in GenieACS **URL:** \ **Category:** Uncategorized\ **Created:** [February 26, 2025, 8:55pm UTC](https://forum.genieacs.com/t/device-offline-issue-with-stun-server-configuration-in-genieacs/6590 "2025-02-26T20:55:16Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![Rocket78](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/rocket78/32/267_2.png) [@Rocket78](https://forum.genieacs.com/u/Rocket78)\ **Post date:** [March 1, 2025, 5:03pm UTC](https://forum.genieacs.com/t/device-offline-issue-with-stun-server-configuration-in-genieacs/6590/3 "2025-03-01T17:03:06Z")
Struggeling with the same problem as there is little to no documentation how to use STUN properly. I use the 1.2.13 and fiddled together a container for myself with drumsergio’s container and an included stuntman so it’s runnning in the same container. I set the cwmp.udpConnectionRequestPort to 3478 in Admin → Config and I have a populated InternetGatewayDevice.ManagementServer.STUNEnable to true and a populated InternetGatewayDevice.ManagementServer.UDPConnectionRequestAddress with a correct IP and port it got from the STUN server on the CPE. I enabled debugging for this explicit CPE and I see 3 times this event (masked for privacy): ```auto event: outgoing UDP message timestamp: 2025-03-01T16:06:37.114Z remoteAddress: x.x.x.x deviceId: 1449BC-Vigor2135FVac-1449BCXXXX remotePort: 46838 body: "GET http://x.x.x.x:46838?ts=1740845197&id=3247567587&un=acs-cpe&cn=de9839c1ddxxxxxx&sig=6bf0bfd6055358ee1708dce87700e8cc4dxxxxxx HTTP/1.1\r\nHost: x.x.x.x:46838\r\n\r\n" --- ``` Which results in a “No contact from CPE” after the timeout. I don’t know if it is an CPE- or acs-issue and there is this thread [GenieACS works with STUN](https://forum.genieacs.com/t/genieacs-works-with-stun/6107) which points to acs --- _[View the full topic](https://forum.genieacs.com/t/device-offline-issue-with-stun-server-configuration-in-genieacs/6590)._