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Ubuntu: Use Private NTP Server

System Administration

Status For hosts in isolated VLANS, we provide access to a local NTP server, via firewall rules....

Updated 4 months ago by glwhite

Hashicorp Vault Setup

System Administration HashiCorp Vault

Here are steps for setting up a secrets store using Hashicorp Vault, on Ubuntu 24. References L...

Updated 4 months ago by glwhite

HashiCorp Vault Cluster Unseal

System Administration HashiCorp Vault

These steps are for a new vault cluster that has been configured and started up, but is in an uns...

Updated 4 months ago by glwhite

Handling Vault Node Restart

System Administration HashiCorp Vault

Each time a Vault node restarts, you will have to unseal it, so that it can participate in the cl...

Updated 4 months ago by glwhite

NTP Server

System Administration

Here are some useful commands when running a GPS-disciplined NTP server. See this page for the l...

Updated 4 months ago by glwhite

Generate Certificates with Hashicorp Vault

System Administration HashiCorp Vault

Here are steps to generate SSL certificates using HashiCorp Vault as an Intermediate CA. NOTE: B...

Updated 4 months ago by glwhite

Vault as Intermediate CA

System Administration HashiCorp Vault

Here are instructions for setting up a vault instance as an Intermediate CA. NOTE: This page ass...

Updated 4 months ago by glwhite

Vault Administrative Setup

System Administration HashiCorp Vault

Once you have a vault instance or cluster unsealed, you can setup auditing, and administrative po...

Updated 4 months ago by glwhite

Vault Wrapping Tokens

System Administration HashiCorp Vault

When creating access tokens for HashiCorp Vault, you always want to prevent them from falling int...

Updated 4 months ago by glwhite

Vault Token Administration

System Administration HashiCorp Vault

Here are notes on access token administration. Be sure that you've already setup an administrati...

Updated 4 months ago by glwhite

Clustering HashiCorp Vault

System Administration HashiCorp Vault

Here are special instructions for setting up a vault cluster. NOTE: See the regular setup page f...

Updated 4 months ago by glwhite

Vault Single-Node Unseal

System Administration HashiCorp Vault

Here are instructions on how to unseal a single-node vault cluster. Vault CLI Comms For the vau...

Updated 4 months ago by glwhite

Linux SSH Key Management

System Administration SSH Keys

See this article for an update based on obsolete SHA-1 RSA key usage: Ubuntu 22.04 SSH the RSA ke...

Updated 4 months ago by glwhite

Linux: Manually Installing SSH Keys

System Administration Ubuntu Server Setup

Here's some steps on how to manually install SSH public keys in a host. 1. SSH Key Folder Navig...

Updated 4 months ago by glwhite

Adding SSH Keys with CAT

System Administration SSH Keys

Here's a quick and dirty way to upload SSH keys to a remote user account, using the CAT command. ...

Updated 4 months ago by glwhite

Adding SSH Keys with ssh-copy-id

System Administration SSH Keys

If you are attempting to add an SSH key (to a Linux host), from another Linux host, you can use a...

Updated 4 months ago by glwhite

Ubuntu: Setup SSH Server

System Administration Ubuntu Server Setup

Here are steps to setup the SSH server on an Ubuntu host. Here's a good reference article for ho...

Updated 4 months ago by glwhite

Linux: Disabling Password Authentication

System Administration SSH Keys

Once you have confirmed that you have SSH key access to a Linux host (using SSH without a passwor...

Updated 4 months ago by glwhite

Authenticating to Linux Server with SSH Keys

System Administration SSH Keys

Once you have configured the server with SSH key authentication, you can follow this to attempt c...

Updated 4 months ago by glwhite

Connecting to SSH Server from Windows

System Administration

Here’s a list of steps to connect with an SSH server from a Windows PC using SSH key authenticati...

Updated 4 months ago by glwhite