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Here’s a list of steps to connect with an SSH server from a Windows PC using SSH key authentication. Open the Putty application, Putty.exe. From the GUI, set the hostname and port of the SSH service, and come up with a memorable name for the session, and sav...

Once you have configured the server with SSH key authentication, you can follow this to attempt connection. NOTE: Using SSH key authentication does not require a password for the remote account. From a Linux host, use this: ssh username@remote_host If this...

Once you have confirmed that you have SSH key access to a Linux host (using SSH without a password), it is safe to disable password-based authentication. WARNING: This step will lock down password-based logins, so ensuring that you will still be able to get a...

Here are steps to setup the SSH server on an Ubuntu host. Here's a good reference article for how to do what we're doing here: How to Enable SSH on Ubuntu 20.04 Here are the commands to execute: sudo apt update Install the SSH server with this: sudo apt i...

Here's a quick and dirty way to upload SSH keys to a remote user account, using the CAT command. This can be done, if your local host doesn't have the ssh-copy-id utility. If you do not have ssh-copy-id available, but you have password-based SSH access to an...

See this article for an update based on obsolete SHA-1 RSA key usage: Ubuntu 22.04 SSH the RSA key isn't working since upgrading from 20.04 NOTE: We currently have two tutorials for this, that need to be consolidated into one. So, maybe this alternate tutoria...

Here are special instructions for setting up a vault cluster. NOTE: See the regular setup page for other details: Hashicorp Vault Setup DNS Resolution Since the vault services will communicate with eachother over TLS, they will need certificates.And as such...

Here are steps to generate SSL certificates using HashiCorp Vault as an Intermediate CA. NOTE: Be sure that you've setup a vault instance as an Intermediate CA.See this page for how: Vault as Intermediate CA Login to the web UI of your intermediate CA, such ...

Here are some useful commands when running a GPS-disciplined NTP server. See this page for the local NTP server (192.168.1.12): Local GPS NTP Time Server NTPQ When running a query of an ntp server, you would use: ntpq -p.What you see is this:ntpq -pn Her...

Here are steps for setting up a secrets store using Hashicorp Vault, on Ubuntu 24. References Lots of steps were taken from here: https://developer.hashicorp.com/vault/tutorials/secrets-management/pki-engine Server Setup Before installing Vault, perform st...

Accessible at: 192.168.1.12Project files stored here: “\\192.168.1.11\zfs_mirror3\Projects\Dormant\NTP Raspberry Pi Server” Build Data Runs Raspian on a Raspberry PI Static IP Address was set in: /etc/dhcpcd.conf Installed ntpstat with this: sudo apt in...

Here are some things to check on when the disk on a docker host gets full. sudo docker system prune -a -f This will cleanup other resource types: docker system prune -a This command will remove older logs from the container logs folder: sudo find /project...

Here are the minimal steps to setup a clean Ubuntu VM. Note: These instructions are tested on on Ubuntu v22 through v24.They may require updates for other versions. Spawn VM Clone The first step is to spawn a clone of the template VM. Be sure to do the fol...

Here’s a list of commands to remember for docker administration. List Containers To list all docker containers on a host: sudo docker ps -a Remove Containers To remove all docker containers on a host: sudo docker rm -f $(sudo docker ps -aq) Container Lo...

Reference: https://ubuntu.com/server/docs/install-a-root-ca-certificate-in-the-trust-store Install the CA certificate package: sudo apt-get install -y ca-certificates Now, you can install any local intranet root CA, with this: NOTE: We are copying in the ....

This how to consolidates several aspects of setting up SSH key access to a Linux server. NOTE: We currently have two tutorials for this, that need to be consolidated into one. So, maybe this alternate tutorial fills your use-case: Ubuntu SSH Key Access NOTE:...

Here's quick instructions for deploying an SSL key/cert pair to an NGINX instance. NOTE: These steps are assumed to be executed as root. Elevate to Root Elevate to root with this: sudo -i Create SSL Folder By default, a fresh NGINX install doesn't yet co...