> For the complete documentation index, see [llms.txt](https://docs.vngcloud.vn/vng-cloud-document/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vngcloud.vn/vng-cloud-document/vnetwork/public-nat-instance/add-remove-nat-port.md). # Add/ Remove NAT Port * Users can add a NAT port when needed or remove a NAT port when no longer needed. * Follow the steps below. ### Add NAT port * In the NAT list screen, select the NAT to which you want to add a port. * Click on the NAT name to go to the NAT detail screen. * Navigate to the Inbound Rules section and click "Create an inbound rule" * Fill in the appropriate information in the new inbound rule entry screen: \- Protocol \- Ether Type \- Port range \- Description * Click "Create" to create the port. ### Delete NAT Port {% hint style="danger" %} *Users cannot delete system-created rules* {% endhint %} * In the NAT list screen, select the NAT from which you want to delete a port. * Click on the NAT name to go to the NAT detail screen. * Navigate to the Inbound Rules section. * Locate the line for the inbound rule you want to delete and click the delete icon. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.vngcloud.vn/vng-cloud-document/vnetwork/public-nat-instance/add-remove-nat-port.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.