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Carl Tashian

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    Linda Ikechukwu
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All About TPMs

By Carl Tashian

Let's explore the Trusted Platform Module (TPM), a standardized crypto processor chip that has recently become ubiquitous in our devices.

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Access your homelab from anywhere with a YubiKey and mutual TLS

By Carl Tashian

By combining YubiKey’s smart card support with mutual TLS client certificates, hardware-bound private keys, and device attestation, you can expose your homelab to the internet in a way that carries very low security risk.

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Secretless TLS client certificates in GitHub Actions

By Carl Tashian

With GitHub Actions OIDC tokens and Smallstep Certificate Manager, you can access protected internal resources like cloud services, databases, websites, or Kubernetes clusters using short-lived TLS certificates and no hard-coded secrets!

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ACME Device Attestation Explained

By Carl Tashian

The shift from SCEP to ACME device attestation is a boon for endpoint security.

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How to use ACME to authenticate to AWS

By Carl Tashian

Stop managing and rotating AWS IAM credentials in your workloads. IAM now lets you delegate AWS authentication to an ACME Certificate Authority.

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The magic of systemd-creds

By Carl Tashian

With systemd-creds, hardware-protected secrets just got a lot easier in Linux

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If OpenSSL were a GUI

By Carl Tashian

What if OpenSSL were a GUI program? Here's what it might look like.

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Automatic TLS in Kubernetes The Hard Way

By Carl Tashian

We integrated the Smallstep toolchain into Kelsey Hightower's excellent tutorial, Kubernetes The Hard Way.

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Cheating my way to success

By Carl Tashian

As I round the bend on two years at Smallstep, I have to ask myself: Why is this going so well?

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Automating TLS certificate management in Docker

By Carl Tashian

We researched how dozens of Docker services handle TLS certificates, and developed a few patterns for automating certificate management in container environments.

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Securing MongoDB With TLS (Part 1 of 3)

By Carl Tashian

Part one of a three part series on securing MongoDB with TLS: How to set up a Certificate Authority for MongoDB servers and clients.

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Securing MongoDB With TLS (Part 2 of 3)

By Carl Tashian

Part two of a three part series on securing MongoDB with TLS: Configuring MongoDB with server and client TLS validation.

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Securing MongoDB With TLS (Part 3 of 3)

By Carl Tashian

The last in a three part series on securing MongoDB: Setting up a cluster TLS with X509 user authentication.

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New Release of Smallstep ACME RA: Automating internal TLS with ACME + Google CAS

By Carl Tashian

We're excited to announce a new release of our HSM-backed cloud ACME server, the Smallstep ACME Registration Authority for Google CA Services.

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Grafana for homelab monitoring—with mTLS!

By Carl Tashian

We set up mutual TLS between five services for secure homelab monitoring with Grafana, Prometheus, Loki, Promtail, and node_exporter.

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How to Handle Secrets on the Command Line

By Carl Tashian

How to keep secret credentials safe on the command line.

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How to use step-ca with Hardware Security Modules (HSMs)

By Carl Tashian

How to use a PKCS #11 HSM with step-ca to protect your private keys

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Build a Tiny Certificate Authority For Your Homelab

By Carl Tashian

Let's make a tiny, standalone CA! We'll use a Raspberry Pi 4, YubiKey 5 NFC, and Infinite Noise TRNG.

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The Embarrassing State of Enterprise ACME Support

By Carl Tashian

ACME is a great protocol for internal certificate management, but enterprise software is not yet ready.

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Clever Uses of SSH Certificate Templates

By Carl Tashian

We added SSH certificate templates to step-ca, and it opened up some unexpected opportunities.

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Introducing Smallstep ACME RA: Automating internal TLS with ACME + Google CAS

By Carl Tashian

We're excited to announce our new HSM-backed cloud ACME server, the Smallstep ACME Registration Authority for Google CA Services.

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Announcing X.509 Certificate Flexibility

By Carl Tashian

We've added X.509 certificate templates to Step Certificates

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DIY SSH Bastion Host

By Carl Tashian

How to create and deploy a simple and minimal bastion host on Ubuntu 20.04 LTS.

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SSH Emergency Access

By Carl Tashian

Learn how to prepare for emergency access to your SSH hosts.

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The Poetics of CLI Command Names

By Carl Tashian

Naming a CLI command requires deep and careful deliberation.

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SSH Agent Explained

By Carl Tashian

The SSH agent acts behind the scenes to keep you safe. Here's how it works.

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SSH Tips & Tricks

By Carl Tashian

A few of our favorite SSH tricks and tips sure to improve your daily experience.

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DIY Single Sign-On for SSH

By Carl Tashian

Let's set up Google SSO for SSH! We’ll use OpenID Connect (OIDC), SSH certificates, a clever SSH configuration tweak, and Smallstep’s open source packages.

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