11 Jul 2021
8 minutes read
Project: Setup Ed25519 Key With YubiKey 5 Nano
YubiKey 5 Nano I’ve been using USB security keys for SSH keys since 2015. I have switched from a generic brand to …
ssh
09 Jul 2021
3 minutes read
Rsync Over SSH
rsync over SSH I’ve migrated a few rsync pages yesterday and realised there’s been something I’d …
08 May 2021
2 minutes read
YubiKey Not Working With GnuPG 2.3
YubiKey 5 Nano - the One I Use I’m a long time fan of USB security keys for SSH access and signig GitHub commits, …
12 May 2020
1 minutes read
SSH: Bad Configuration Option: Usekeychain
SSH bad configuration option: usekeychain I’m merging my ssh client configuration so that it can be shared between …
24 Mar 2020
2 minutes read
SSH Client Config for Using a Jumphost
SSH config with jumphost SSH jumphost configuration in .ssh/config I needed to use a mobile 4G hotspot today and …
23 Mar 2020
3 minutes read
How to Use Ansible With SSH Jumphost
Red Hat Ansible There are many scenarios where some of your infrastructure isn’t directly accessible from your …
10 Mar 2020
2 minutes read
Ban Specific IP Manually With Fail2ban
Now that I’m monitoring my logs using cetralised RSyslog, I regularly notice SSH attacks right when and as they …
14 Oct 2019
2 minutes read
How to Generate Ed25519 SSH Key
Generating ed25519 SSH Key I’m hoping to reinstall my MacBook Pro 15" 2017 with a fresh macOS Catalina …
15 Jun 2019
3 minutes read
SSH: Too Many Authentication Failures
Unix Tutorial image_pdf unix-tutorial-grey Here I was trying to ssh from my XPS laptop to MacBook Pro for some quick …
24 Apr 2019
2 minutes read
How to Check SSH Port Status
Check SSH port 22 with telnet When you’re configuring new SSH server, it’s possible that connection …
How to decrypt files with Ansible Vault
ansible-vault decrypt restores an encrypted file …
Just discovered the macOS footprint command
I’ve administered Linux systems for around 25 …
How to Fix Ubuntu Packages Held Back
When trying to run do-release-upgrade on an Ubuntu …
How To Resize Filesystem with resize2fs
Quick note on filesystem resize on a typical …
macOS Tahoe
macOS Tahoe is the upcoming major release of macOS …
Centralized Bash history with timestamps
BASH is my Linux shell of choice (it’s zsh on …
Inspect filesystem operations with fs_usage in macOS
hey Unless you disable SIP, most of DTrace based …