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Using Gmail SMTP with Cloudflare Email Routing: Step-by-Step Guide

Learn how to send emails through Gmail SMTP with Cloudflare Email Routing in this comprehensive guide.

Step 1: Enable 2-Factor Authentication

To proceed with this method, ensure that you have enabled two-factor authentication for your Google account. If you haven't done so already, you can follow the link to set it up → Enable 2FA in your Google account.

Step 2: Create an App Password for Mail

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The repository for the assignment is public and Github does not allow the creation of private forks for public repositories.

The correct way of creating a private frok by duplicating the repo is documented here.

For this assignment the commands are:

1. Create a bare clone of the repository. (This is temporary and will be removed so just do it wherever.)

git clone --bare git@github.com:usi-systems/easytrace.git

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1. Introduction
2. Standards
3. Common combinations
4. Conversion
5. Verification/Inspection
6. Tips for recognising

Introduction

It happens that there are many standards for storing cryptography materials (key, certificate, ...) and it isn't always obvious to know which standard is used by just looking at file name extension or file content. There are bunch of questions on stackoverflow asking about how to convert from PEM to PKCS#8 or PKCS#12, while many tried to answer the questions, those answers may not help because the correct answer depends on the content inside the PEM file. That is, a PEM file can contain many different things, such as an X509 certificate, a PKCS#1 or PKCS#8 private key. The worst-case scenario is that someone just store a non-PEM content in "something.pem" file.

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The bitcoin-core/guix.sigs Repository Workflow

Common environment variables

export SIGNER="hebasto"
export GUIX_SIGS_REPO="/home/hebasto/guix.sigs"
export DETACHED_SIGS_REPO="/home/hebasto/bitcoin-detached-sigs"

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Signing VirtualBox Kernel Modules

These are the steps I followed enable VirtualBox on my laptop without disabling UEFI Secure Boot. They're nearly identical to the process described on [Øyvind Stegard's blog][blog], save for a few key details. The images here are borrowed from the [Systemtap UEFI Secure Boot Wiki][systemtap].

1. Install the VirtualBox package (this might be different for your platform).

   src='https://download.virtualbox.org/virtualbox/rpm/fedora/virtualbox.repo'

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evdev:input:b0003v05ACp0250*
 KEYBOARD_KEY_70068=insert      # F13: Insert
 KEYBOARD_KEY_7006a=sysrq       # F15: PrinScr / SysRq

evdev:input:b0003v05ACp026C*
 KEYBOARD_KEY_70068=insert      # F13: Insert
 KEYBOARD_KEY_7006a=sysrq       # F15: PrinScr / SysRq
 KEYBOARD_KEY_700e2=leftmeta    # key marked left alt -> left meta
 KEYBOARD_KEY_700e3=leftalt     # key marked left meta -> left alt

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Docker Desktop, VirtualBox and WSL2:

• https://learn.microsoft.com/pl-pl/windows/wsl/install-manual
• https://docs.docker.com/desktop/vm-vdi/ (if you are running docker under VM with Windows - enable nested virtualisation)
• microsoft/WSL#5650 (comment)
• https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/quick-start/enable-hyper-v
• https://answers.microsoft.com/en-us/windows/forum/all/wslregisterdistribution-failed-with-error/5fdd8aa6-175e-4a14-8fe6-07673133fd15
• https://stackoverflow.com/questions/33552810/virtualbox-virtualization-is-enabled-but-not-working (Hyper-V should be disabled)
• https://superuser.com/questions/567208/how-to-detect-if-vt-x-has-been-turned-on-in-the-bios
• microsoft/WSL#5430 - WSL2 inside Virtual Box (without solution)

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Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

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Install Mikrotik CHR on Digital Ocean Ubuntu 18.04 LTS Droplet. Tested 11/2021

1. Turn Off Droplet after creation and go to Recovery and set it to Boot from Recovery ISO.

2. Trun on Droplet and open Console

3. Press 6 and go to shell

4. Paste below code to install CHR on HDD

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Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000