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@nitred
nitred / optimal_mtu.md
Last active July 19, 2025 12:43
Wireguard Optimal MTU

About

  • I faced bandwidth issues between a WG Peer and a WG server. Download bandwidth when downloading from WG Server to WG peer was reduced significantly and upload bandwidth was practically non existent.
  • I found a few reddit posts that said that we need to choose the right MTU. So I wrote a script to find an optimal MTU.
  • Ideally I would have liked to have run all possible MTU configurations for both WG Server and WG Peer but for simplicity I choose to fix the WG Server to the original 1420 MTU and tried all MTUs from 1280 to 1500 for the WG Peer.

Testing

  • On WG server, I started an iperf3 server
  • On WG peer, I wrote a script that does the following:
    • wg-quick down wg0
  • Edit MTU in the /etc/wireguard/wg0.conf file
@roycewilliams
roycewilliams / pwnedpasswords-v2-top20k.txt
Last active January 4, 2025 03:16
pwnedpasswords-v2-top20k.txt
#------------------------------------------------------------------------------
# Top 20K hashes from the Troy Hunt / haveibeenpwned Pwned Passwords list v2 (2018-02-21)
# with frequency count and cracked plaintext passwords
#
# The latest version of this file can be found here:
# https://gist.github.com/roycewilliams/281ce539915a947a23db17137d91aeb7
#
# NOTE: THIS FILE IS DEPRECATED.
# The equivalent of this file, but based on v6 of the Pwned Passwords, is here:
# https://gist.github.com/roycewilliams/226886fd01572964e1431ac8afc999ce
@negz
negz / kubedump.sh
Last active July 11, 2024 10:57
Dump Kubernetes cluster resources as YAML
#!/usr/bin/env bash
set -e
CONTEXT="$1"
if [[ -z ${CONTEXT} ]]; then
echo "Usage: $0 KUBE-CONTEXT"
exit 1
fi
@jd
jd / gorilla-xor-encoding.py
Last active August 23, 2024 08:17
# -*- encoding: utf-8 -*-
#
# Copyright © 2016 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
@aras-p
aras-p / preprocessor_fun.h
Last active July 14, 2025 13:08
Things to commit just before leaving your job
// Just before switching jobs:
// Add one of these.
// Preferably into the same commit where you do a large merge.
//
// This started as a tweet with a joke of "C++ pro-tip: #define private public",
// and then it quickly escalated into more and more evil suggestions.
// I've tried to capture interesting suggestions here.
//
// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,