{"id":1864,"date":"2024-04-20T13:04:17","date_gmt":"2024-04-20T13:04:17","guid":{"rendered":"https:\/\/integrationobjects.com\/blog\/?p=1864"},"modified":"2026-05-26T13:11:27","modified_gmt":"2026-05-26T13:11:27","slug":"verify-tcp-port-is-open-to-establish-opcnet-broker-communications","status":"publish","type":"post","link":"https:\/\/integrationobjects.com\/blog\/verify-tcp-port-is-open-to-establish-opcnet-broker-communications\/","title":{"rendered":"Verify TCP port is open to establish OPCNet Broker communications"},"content":{"rendered":"

If the OPCNet Broker (ONB) Server service is running and you are not able to establish the TCP communication, we recommend you to use the\u00a0tcping<\/em>\u00a0command to verify and confirm the quality of the network communications and that ONB Server is reachable from the client machine. To do so:<\/p>\n

    \n
  1. \n

    Download the tcping utility package from\u00a0here<\/a><\/p>\n<\/li>\n

  2. Copy the tcping executable in the ONB Client machine under \u201c.:\\WINDOWS\\system32\\\u201d<\/li>\n
  3. In the ONB Client machine, execute this command \u201ctcping\u00a0IPONBS<\/em>\u00a0Port<\/em>\u201d in the command line window; where\u00a0IPONBS<\/em>\u00a0is the IP address of the ONB Server machine and\u00a0Port<\/em>\u00a0is the TCP port used by the ONB Server.<\/li>\n
  4. If the ONB Server is reachable, you will get the following message: Probing\u00a0IPONBS<\/em>:Port<\/em>\/tcp \u2013 Port is open.<\/li>\n
  5. If the TCP port is not open, we recommend you to check the network configuration between the ONB Server and the ONB Client.<\/li>\n<\/ol>\n

    OPCNet Broker is an OPC Tunneling software used to establish and secure OPC communications without needing to configure DCOM. Click\u00a0here<\/a>\u00a0<\/em>for more information about OPCNet Broker.<\/p>\n","protected":false},"excerpt":{"rendered":"

    If the OPCNet Broker (ONB) Server service is running and you are not able to establish the TCP communication, we recommend you to use the\u00a0tcping\u00a0command<\/p>\n","protected":false},"author":1,"featured_media":1865,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[185],"tags":[49],"class_list":["post-1864","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-opc-tunneling","tag-opcnet-broker"],"yoast_head":"\nVerify TCP Port Connectivity for OPCNet Broker Communication | OPC Tunneling Guide<\/title>\n<meta name=\"description\" content=\"Learn how to verify that a TCP port is open for OPCNet Broker communications using the tcping utility. 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