thomasgauvin: add docs on networking, firewall and ip addresses

Author: thomasgauvin

src/content/docs/hyperdrive/configuration/firewall-and-networking-configuration.mdx

@@ -0,0 +1,16 @@
+---
+pcx_content_type: concept
+title: Firewall and networking configuration
+sidebar:
+  order: 7
+---
+
+import { TabItem, Tabs, Render, WranglerConfig } from "~/components";
+
+Hyperdrive uses the [Cloudflare IP address ranges](https://www.cloudflare.com/ips/) to connect to your database. Only the IP address ranges listed in this reference need to be allow-listed in your database's firewall and networking configurations.
+
+You can connect to your database from Hyperdrive using any of the 3 following networking configurations:
+
+1. Configure your database to allow inbound connectivity from the public Internet (all IP address ranges).
+2. Configure your database to allow inbound connectivity from the public Internet, with only the IP address ranges used by Hyperdrive allow-listed.
+3. Configure your database to allow inbound connectivity from a private network, and run a Cloudflare Tunnel instance in your private network to enable Hyperdrive to connect from the Cloudflare network to your private network. Refer to [documentation on connecting to a private database using Tunnel](/hyperdrive/configuration/connect-to-private-database/).