# Page Not Found

The URL `vserver/vmarketplace/vmarketplace-giao-dien-cu/network-software-installation/pfsense-tren-hcm03/mtu-va-df-flag-best-practice-on-vng-cloud` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [MTU & “DF flag” best practice on GreenNode](https://docs.vngcloud.vn/vng-cloud-document/vserver/vmarketplace/network-software-installation/pfsense-on-hcm03/mtu-and-df-flag-best-practice-on-vng-cloud.md)
- [Pfsense - AWS Cloud](https://docs.vngcloud.vn/vng-cloud-document/vserver/vmarketplace/network-software-installation/pfsense-on-hcm03/vpn-site-to-site/pfsense-aws-cloud.md)
- [Routing IP Range within VPC](https://docs.vngcloud.vn/vng-cloud-document/vserver/vmarketplace/network-software-installation/pfsense-on-hcm03/routing-ip-range-within-vpc.md)
- [VPN Client to Server](https://docs.vngcloud.vn/vng-cloud-document/vserver/vmarketplace/network-software-installation/pfsense-on-hcm03/vpn-client-to-server.md)
- [Notice & Limitation](https://docs.vngcloud.vn/vng-cloud-document/vserver/vmarketplace/network-software-installation/pfsense-on-hcm03/notice-and-limitation.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://docs.vngcloud.vn/vng-cloud-document/vserver/vmarketplace/network-software-installation/pfsense-on-hcm03/mtu-and-df-flag-best-practice-on-vng-cloud.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://docs.vngcloud.vn/vng-cloud-document/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://docs.vngcloud.vn/vng-cloud-document/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/vng-cloud-document/vserver/vmarketplace/network-software-installation/pfsense-on-hcm03/mtu-and-df-flag-best-practice-on-vng-cloud.md`).

You may also use `Accept: text/markdown` header for content negotiation.