# Ignition OPC UA server just configured to listen on loopback? **URL:** \ **Category:** Ignition\ **Created:** [June 29, 2020, 6:53am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-just-configured-to-listen-on-loopback/36142 "2020-06-29T06:53:38Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![eoursel](https://avatars.discourse-cdn.com/v4/letter/e/f08c70/32.png) [@eoursel](https://forum.inductiveautomation.com/u/eoursel)\ **Post date:** [June 29, 2020, 6:53am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-just-configured-to-listen-on-loopback/36142/1 "2020-06-29T06:53:38Z")
Hi Looks like the internal OPC UA server is just exposed on the loopback and so it is not accessible from an OPC UA from others machines. I tried to configure the endpoint to listen on the public IP4 address of the Edge gateway, but the server fails to start. So it is possible to configure this OPC UA server to access it remotely? Thanks ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [June 29, 2020, 11:49am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-just-configured-to-listen-on-loopback/36142/2 "2020-06-29T11:49:02Z")
I vaguely recall seeing a comment that Edge has that limitation. A full Ignition gateway can certainly be configured to listen on the external address. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [June 29, 2020, 11:57am UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-just-configured-to-listen-on-loopback/36142/3 "2020-06-29T11:57:04Z")
Was there an error message? Where did you make a config change? ---
**Author:** ![eoursel](https://avatars.discourse-cdn.com/v4/letter/e/f08c70/32.png) [@eoursel](https://forum.inductiveautomation.com/u/eoursel)\ **Post date:** [June 29, 2020, 1:11pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-just-configured-to-listen-on-loopback/36142/4 "2020-06-29T13:11:34Z")
Thanks Kevin. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/a/caeb50e834edbae1660056df0100761d46fc110a.png) Edited endpoint URL and discovery URL. The server is running on a RPI4 accessible at 192.168.0.46. The error is ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/e/1eb1d7bf154b7299938ae6fe7d0454e79cdbb7d4.png) ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [June 29, 2020, 1:15pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-just-configured-to-listen-on-loopback/36142/5 "2020-06-29T13:15:15Z")
You’re modifying the wrong settings. You’ve changed the settings for the “loopback” client connection to Ignition’s own OPC UA Server. If you have a version of Edge that allows you to change the bind address away from localhost it would be under OPC UA \> Server Settings in the gateway. ---
**Author:** ![jramirez3](https://avatars.discourse-cdn.com/v4/letter/j/a183cd/32.png) [@jramirez3](https://forum.inductiveautomation.com/u/jramirez3)\ **Post date:** [April 29, 2021, 5:41pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-just-configured-to-listen-on-loopback/36142/6 "2021-04-29T17:41:36Z")
Kevin, I have been able to make this work using the computers IP address as the bind address, the IP from the WiFi for internet access. I’ve tried using the IP address from the VPN to our cloud infrastructure but it won’t ever connect. The local computer, local ignition, local OPC (changed from localhost to VPN IP) but after all that it won’t connect (the local Ignition to the local OPC). Any suggestions on this? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 29, 2021, 5:45pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-just-configured-to-listen-on-loopback/36142/7 "2021-04-29T17:45:31Z")
Use `0.0.0.0` as the bind address. Not sure exactly what else you’re asking about though. You should probably start a new topic where you throughly explain your setup. ---
**Author:** ![jramirez3](https://avatars.discourse-cdn.com/v4/letter/j/a183cd/32.png) [@jramirez3](https://forum.inductiveautomation.com/u/jramirez3)\ **Post date:** [April 29, 2021, 6:15pm UTC](https://forum.inductiveautomation.com/t/ignition-opc-ua-server-just-configured-to-listen-on-loopback/36142/8 "2021-04-29T18:15:34Z")
New topic here. > [@Bind OPC Server IP to VPN IP](http://forum.inductiveautomation.com/t/bind-opc-server-ip-to-vpn-ip/46171): > > Has anyone been able to bind the Ignition OPC-UA server to a different IP address? More specifically to the VPN IP that the computer is receiving, not the main WiFi or Ethernet IP. I have gotten it to work with the WiFi IP thought but not the VPN IP. I have set the OPC-UA settings bind address to the VPN IP address and can’t the the OPC server to connect, can’t even get the discovery part to find anything. Now I changed it to 0.0.0.0 and it discovered the 127.0.0.1 OPC, I selected and used tha…