---
title: "Proxy RUM data to Frontend Observability | Grafana Cloud documentation"
description: "Learn how to proxy RUM signals to Grafana Cloud"
---

> For a curated documentation index, see [llms.txt](/llms.txt). For the complete documentation index, see [llms-full.txt](/llms-full.txt).

# Proxy RUM data to Frontend Observability

A proxy can be used to:

- Filter out bots
- Enrich the signals with custom data
- Apply advanced filter techniques to prevent sensitive data from being sent to Grafana Cloud
- Apply advanced sampling techniques to reduce the amount of data sent to Grafana Cloud
- Apply advanced rate limiting techniques to prevent submitting too many user-sessions to Grafana Cloud
- Hide the original ingest token into Grafana Cloud to obscure it from clients

## Requirements for the proxy

Any proxy technology can be used, as long as it transparently forwards all headers to and from the Grafana Cloud collector endpoint and sets a `X-Forwarded-For` header to communicate the client IP to the endpoint.

## Example (nginx)

An nginx implementation could be as simple as introducing a new location block that handles and forwards to your collector endpoint:

nginx ![Copy code to clipboard](/media/images/icons/icon-copy-small-2.svg) Copy

```nginx
location ~ ^/faro-proxy(.*)$ {
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header Host $http_host;
  proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;

  proxy_ssl_server_name on;
  resolver          8.8.8.8 8.8.4.4 ipv6=off;
  resolver_timeout  5s;

  # customize this line with the hostname of your collector
  set $faro "faro-collector-prod-us-central-0.grafana.net";

  proxy_pass https://$faro/collect$1;
}
```

In your JavaScript initialization code, you should now be able to use the proxy host instead of the hosted collector and the proxy should reverse-proxy between Grafana Cloud and the users’ browser.

Before: `https://faro-collector-prod-us-central-0.grafana.net/collect/12345abcdefg`

After: `https://my-proxy-host.net/faro-proxy/12345abcdefg`

## Reading further

- [Learn how to rate limit clients with nginx](https://www.nginx.com/blog/rate-limiting-nginx/)