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 …
Security
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, …
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 …
29 Feb 2020
1 minutes read
FB4 Log Fail2ban Messages to SyslogLog Fail2ban Messages to Syslog
With quite a few servers accepting SSH connections and protecting themselves using fail2ban, you very quickly recognize …
04 Feb 2020
1 minutes read
FB4 Failed Login Attempts for Root UserFailed Login Attempts for Root User
Wow, things are much worse than I expected! I’m reinstalling one of the dedicated hosts for Tech Stack. Kicked off …
10 Jan 2020
4 minutes read
FB4 How To: Use Fail2ban to Protect SSHHow To: Use Fail2ban to Protect SSH
I have a number of servers, including a few on the home office network, that accept SSH connections. Even though they …
13 Sep 2019
2 minutes read
FB4 Confirm Firewall Configuration in RHEL 8Confirm Firewall Configuration in RHEL 8
I’m fascinated by the improvements and new features in RHEL 8, plus it’s a primary distro used in most …
25 Aug 2019
2 minutes read
Installing Kali Linux 2019.2
It appears that Kali Linux is supported on the latest Raspberry Pi model, RPi 4. So I thought I’d get familiar …
19 Aug 2019
3 minutes read
FB4 Deploy Your SSH Key to Remote ServerDeploy Your SSH Key to Remote Server
One of the greatest improvements introduced by the SSH protocol is key-based authentication – meaning your client and …
20 Jun 2019
1 minutes read
FB4 Cloudflare: Crypto Week 2019Cloudflare: Crypto Week 2019
Cloudflare, possibly the best DNS provider (and so much more) available for free, is hosting CryptoWeek 2019 since …
How to Resize Filesystem With Resize2fs
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 …
How-To: Upgrade Ubuntu 23.04 to 24.10
I reliased one of my Raspberry Pi systems was …
macOS Sequoia 15.0
Apple keeps shipping public betas of macOS Sequoia …
Video: Has This Worked Before?
Another video on my YouTube channel …