![HP PrinterOn Enterprise - Tool to check what ports are blocked or listening on the machine hosting the PrinterOn Enterprise solution. | HP® Customer Support HP PrinterOn Enterprise - Tool to check what ports are blocked or listening on the machine hosting the PrinterOn Enterprise solution. | HP® Customer Support](https://support.hp.com/doc-images/900/c06236101.gif)
HP PrinterOn Enterprise - Tool to check what ports are blocked or listening on the machine hosting the PrinterOn Enterprise solution. | HP® Customer Support
![PortQueryUI – GUI tool that can be used for troubleshooting port connectivity issues - TechNet Articles - United States (English) - TechNet Wiki PortQueryUI – GUI tool that can be used for troubleshooting port connectivity issues - TechNet Articles - United States (English) - TechNet Wiki](http://social.technet.microsoft.com/wiki/resized-image.ashx/__size/550x0/__key/communityserver-wikis-components-files/00-00-00-00-05/0624.PortQuery5.png)
PortQueryUI – GUI tool that can be used for troubleshooting port connectivity issues - TechNet Articles - United States (English) - TechNet Wiki
![PortQueryUI – GUI tool that can be used for troubleshooting port connectivity issues - TechNet Articles - United States (English) - TechNet Wiki PortQueryUI – GUI tool that can be used for troubleshooting port connectivity issues - TechNet Articles - United States (English) - TechNet Wiki](http://social.technet.microsoft.com/wiki/resized-image.ashx/__size/550x0/__key/communityserver-wikis-components-files/00-00-00-00-05/6102.portquery6.png)