# badupnp

**Repository Path**: mirrors_cloudflare/badupnp

## Basic Information

- **Project Name**: badupnp
- **Description**: Web service to test if SSDP/UPnP is exposed to the internet
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-08-08
- **Last Updated**: 2026-05-23

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

badupnp
===

This is a simple web service that tests if the viewer is running a
router that is responding to UPnP / SSDP on the internet. This is
bad because UPnP returns many more packets than the requesting system
sends it, combined with UDP as a transport, it makes it a protocol ripe
for abuse for DDoS reflection.

This tool was written for the Cloudflare blog post:
https://blog.cloudflare.com/ssdp-100gbps/

# Example systemd units:

```
[Service]
ExecStart=/usr/bin/badupnp
Restart=always
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=badupnp
User=root
WorkingDirectory=/usr/local/badupnp/
RestartSec=10s

[Install]
WantedBy=multi-user.target
```

# Example lighttpd reverse proxy info:

```
# ensure you have mod_proxy loaded

$HTTP["host"] == "badupnp.benjojo.co.uk" {
    proxy.server  = ( "" => ( (
            "host" => "127.0.0.1",
            "port" => 753
    ) ) )
}
```