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cfssl
- Running one’s own root Certificate Authority in 2023
- Selfhosted CA tutorial
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i must be the only guy that understands certificates
cfssl is kinda outright better version of that.
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SSL certificate problem: unhandled critical extension
The Cloudflare SSL tools at https://github.com/cloudflare/cfssl might help. Here's what it shows for one of the example Snake Oil certs:
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Private CA management
I've used this in the past and it worked great. https://github.com/cloudflare/cfssl
- Linux Certificate Authority root stores have a too simple view of 'trust'
- Creating an internal Certificate Authority in 2022 that is accepted by modern web browsers.
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How to create users in Kubernetes
The first step is to create the source key that represents our user. This key is created using a tool like openssl but another popular tool to use is cfssl, created by Cloudflare. Some folks think cfssl is easier to use, and it definitely looks easier to script. But for this example we will use openssl. You can also choose to create the key using a number of different algorithms. For this example we will use ED25519.
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[Legal notice] IoT Core will be discontinued on Aug. 16, 2023
TLS/SSL worked well with client certificates generated by the CFSSL API.
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Feedback on a Self-signed SSL CA?
Not sure if relevant but we used tooling from CloudFlare in the past: https://github.com/cloudflare/cfssl
kubetls
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Do I even need istio?
Hi! I wrote a thing called KubeTLS that automatically provisions MTLS certificates per-pod. It is not necessarily simpler than KubeTLS, because you need a lot of the same components, but if you're not looking for the whole set of baggage that comes with an integrated and opinionated (and in my view, often wrong) solution, I'd be happy to help you give it a try.
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i must be the only guy that understands certificates
I'm working on KubeTLS to make Certificates a first-class concept; though I'm also pushing Kubernetes upstream to adopt the concept. Everything should run with certs, and it's all about solving problems of trust and key distribution.
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SSL/TLS for Kubernetes svc.cluster.local
I built a tool for just that: https://gitlab.com/gauntletwizard_net/kubetls . It's out of date and half-baked - Nowhere near production ready. It might help you start as a baseline.
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Go HTTPS Servers with TLS
I am working towards this goal, sort of: I believe that TLS should be self-configuring. I've built a spec and some tools around automatically issuing TLS certificates automatically in a well-defined place in Kubernetes clusters. You then call my init code to start up your services - Exactly like you'd call http.ListenAndServe(), you call KubeTLS.ListenAndServe(). The code is simple enough, and there's a little script you run on your development machine to create a self-signed cert locally.
https://gitlab.com/gauntletwizard_net/kubetls
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Google’s New ‘Autopilot’ for Kubernetes
I’m the author of a tool called KubeTLS. KubeTLS creates certificates for use in MTLS between pods in your cluster. These certificates are identified as the Service Account that the pod is running as (for use in identifying to the cluster), but also as server certificates for identifying the server to other client pods. There’s no reason those two usages couldn’t be split into two certificates, but no reason for them to be - The X509 spec and client libraries do the right thing.
What are some alternatives?
OpenSSL - TLS/SSL and crypto library
nginx-service-mesh - A service mesh powered by NGINX Plus to manage container traffic in Kubernetes environments.
easy-rsa - easy-rsa - Simple shell based CA utility
acme2certifier - library implementing ACME server functionality
LetsEncrypt-PRTG - Post request script to install an SSL certificate obtained with Certify the Web or win-acme in PRTG.
certmagic - Automatic HTTPS for any Go program: fully-managed TLS certificate issuance and renewal
acme.sh - A pure Unix shell script implementing ACME client protocol
certificates - 🛡️ A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH.
acme-dns - Limited DNS server with RESTful HTTP API to handle ACME DNS challenges easily and securely.
step - An async control-flow library that makes stepping through logic easy.
certify - Professional ACME Client for Windows. Certificate Management UI, powered by Let's Encrypt and compatible with all ACME v2 CAs. Download from certifytheweb.com
Nginx Proxy Manager - Docker container for managing Nginx proxy hosts with a simple, powerful interface