> ## Documentation Index
> Fetch the complete documentation index at: https://docs.packets-decreaser.net/llms.txt
> Use this file to discover all available pages before exploring further.

# Remote DDoS Protection via GRE Tunnel

> Use a GRE tunnel over IPv4 to route any server's traffic through Packets Decreaser scrubbing, wherever the server is hosted.

Remote DDoS protection via GRE (Generic Routing Encapsulation) lets you place any server, regardless of its physical location or hosting provider, behind our scrubbing infrastructure. Packets Decreaser sets up a GRE tunnel using an IPv6 address and routes your protected IPs to that endpoint entirely in software.

<Note>
  Hardware GRE tunnels support a maximum throughput of **40 Gbits or** 59 Mpps. If your traffic volume exceeds this, contact support to discuss alternatives.
</Note>

## How it works

GRE is a tunneling protocol that wraps your network packets inside a new IP packet, creating a virtual point-to-point link between your server and our scrubbing network. All inbound traffic to your protected IPs passes through the scrubber before being forwarded over the tunnel to your server.

```text theme={null}
Internet -> DDOS Protection -> GRE tunnel (IPv6) -> Your server 
Outgoing Connections can be tunneld back to us or sended via static route to your Upstream
```

<Info>
  The tunnel endpoint on the Packets Decreaser side is an IPv4 address. Your server needs outbound IPv4 connectivity to establish the tunnel.
</Info>

## Limits

| Parameter         | Value               |
| ----------------- | ------------------- |
| Maximum bandwidth | 40 Gbits or 59 Mpps |
| Tunnel type       | GRE over IPv4       |
| Setup method      | Hardware            |
| Server location   | Any                 |