# OPC UA connection faulted **URL:** \ **Category:** Ignition\ **Tags:** ignition79\ **Created:** [July 24, 2018, 9:08am UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted/18942 "2018-07-24T09:08:35Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![kyle\_dar](https://avatars.discourse-cdn.com/v4/letter/k/f475e1/32.png) [@kyle\_dar](https://forum.inductiveautomation.com/u/kyle_dar)\ **Post date:** [July 24, 2018, 9:08am UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted/18942/1 "2018-07-24T09:08:35Z")
I installed Ignition v7.9 on my PC. And I use Node-RED to deploy an OPC UA Server on the Raspberrypi. The Raspberrypi is behind a NAT. And I use frp to make it accessable remotely. I just tested it successfully with an OPC UA Client. But it didn’t work while using Igniton. The error message is below: ```auto java.nio.channels.UnresolvedAddressException at sun.nio.ch.Net.checkAddress(Unknown Source) at sun.nio.ch.SocketChannelImpl.connect(Unknown Source) at io.netty.channel.socket.nio.NioSocketChannel.doConnect(NioSocketChannel.java:209) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.connect(AbstractNioChannel.java:207) at io.netty.channel.DefaultChannelPipeline$HeadContext.connect(DefaultChannelPipeline.java:1279) at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:453) at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:439) at io.netty.channel.ChannelDuplexHandler.connect(ChannelDuplexHandler.java:50) at io.netty.channel.AbstractChannelHandlerContext.invokeConnect(AbstractChannelHandlerContext.java:453) at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:439) at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:421) at io.netty.channel.DefaultChannelPipeline.connect(DefaultChannelPipeline.java:1024) at io.netty.channel.AbstractChannel.connect(AbstractChannel.java:203) at io.netty.bootstrap.Bootstrap$2.run(Bootstrap.java:167) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:358) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:374) at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112) at java.lang.Thread.run(Unknown Source) 7.9.7 (b2018032914) Oracle Corporation 1.8.0_172 ``` Additional informations maybe useful: PC: Windows 7 Ultimate SP1 + Igniton: 7.9.7 Raspberrypi: Raspbian + Node-RED OPC UA Server: node-red-contrib-iiot-opcua OPC UA Client: UA Sample Client from OPC UA Foundation Security Mode: None Security Policy: None Message Encoding: binary And I noticed the similar issue: [java.nio.channels.UnresolvedAddressException](http://forum.inductiveautomation.com/t/java-nio-channels-unresolvedaddressexception/15263) But it didn’t work for me. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [July 24, 2018, 11:28am UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted/18942/2 "2018-07-24T11:28:05Z")
Are you sure you set up the Host Override correctly? ---
**Author:** ![kyle\_dar](https://avatars.discourse-cdn.com/v4/letter/k/f475e1/32.png) [@kyle\_dar](https://forum.inductiveautomation.com/u/kyle_dar)\ **Post date:** [July 25, 2018, 2:33am UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted/18942/3 "2018-07-25T02:33:07Z")
I set the Host Override as “192.168.1.5”, which is the IP address of the Raspberry Pi. And the error message is below: ```auto UaException: status=Bad_Timeout, message=io.netty.channel.ConnectTimeoutException: connection timed out: /192.168.1.5:55388 at org.eclipse.milo.opcua.stack.client.UaTcpStackClient.lambda$bootstrap$15(UaTcpStackClient.java:507) at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:683) at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:604) at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:564) at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:425) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:222) at io.netty.util.concurrent.PromiseTask$RunnableAdapter.call(PromiseTask.java:38) at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:120) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:358) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:374) at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112) at java.lang.Thread.run(Unknown Source) Caused by: io.netty.channel.ConnectTimeoutException: connection timed out: /192.168.1.5:55388 at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:220) ... 6 more 7.9.7 (b2018032914) Oracle Corporation 1.8.0_172 ``` ---
**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:** [July 25, 2018, 2:37am UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted/18942/4 "2018-07-25T02:37:12Z")
> [@kyle\_dar](#): > > message=io.netty.channel.ConnectTimeoutException: connection timed out: /192.168.1.5:55388 You've just got a basic networking error now. The creation of the TCP connection is timing out. If you're certain the server is running you'll have to look closer at your network / firewall setup. ---
**Author:** ![kyle\_dar](https://avatars.discourse-cdn.com/v4/letter/k/f475e1/32.png) [@kyle\_dar](https://forum.inductiveautomation.com/u/kyle_dar)\ **Post date:** [July 25, 2018, 3:45am UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted/18942/5 "2018-07-25T03:45:03Z")
Thank you for your replying. I just turn off the firewall, but it still occurs the same error message. Maybe I need to show you the network structure. ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/e/ea0a1455726ca17bd44928a40a9cbc874a9b780c.png) As you see, I find that the IP address of the OPC UA Server on site and routers in the office is on the same network segment. Is it possible that Ignition get the Host Override (192.168.1.5) and it actually only searches devices conneted Router A instead of OPC UA Server on site? ---
**Author:** ![kyle\_dar](https://avatars.discourse-cdn.com/v4/letter/k/f475e1/32.png) [@kyle\_dar](https://forum.inductiveautomation.com/u/kyle_dar)\ **Post date:** [July 26, 2018, 2:38am UTC](https://forum.inductiveautomation.com/t/opc-ua-connection-faulted/18942/6 "2018-07-26T02:38:35Z")
I just conneted it successfully by setting the Host Override to `ip_of_port_fowarding_server:port_of_port_fowarding_server` instead of the real IP and port of the OPC UA Server behind NAT.