To properly configure a Pi Zero W headless (without monitor and keyboard), burn a Raspberry OS (Raspbian) image into a SD card. Insert the SD card again and browse the first partition where config.
This post explore my second TryHackMe room: Attacking ICS Plant #2 . Because the VM can be unresponsive, I also provide the OVA for offline labs. The room allows attacking a simulated refinery plant, gaining basic knowledge on ICS protocol weakness.
This post explore my first TryHackMe room: Attacking ICS Plant #1 . Because the VM can be unresponsive, I also provide the OVA for offline labs. The room allows exploration of a simulated bottle-filling plant, gaining basic knowledge on ICS protocol weakness.
On some Ansible designs, I need to use a bastion host to log in to remote servers. We can configure it in the following way: on ansible.cfg file: [defaults] timeout = 25 gathering = smart # utile ma non essenziale [ssh_connection] #ssh_args = -o ControlMaster=auto -o ControlPersist=600s ssh_args = -o ControlMaster=auto -o ControlPersist=600s -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=nocontrol_path = %(directory)s/%%h-%%r pipelining = True on the inventory file:
On large Linux Debian installations, I usually configure an APT proxy to optimize upgrades. I’m used to configuring APT-Cached NG in the following way: on /etc/apt-cacher-ng/acng.conf file: CacheDir: /proxydata/cache/apt-cacher-ng LogDir: /var/log/apt-cacher-ng SupportDir: /usr/lib/apt-cacher-ng Port:3142 Remap-debrep: file:deb_mirror*.
On my home Linux box, I implemented Let’s Encrypt to properly manage secure HTTPs connections. To properly configure it we need to: Make the directory /.well-known reachable via HTTP and mapped locally under /var/www/html/.
I’m now a DB admin and I always forget how to manage MySQL/MariaDB users. Here are some self-notes to not search over and over the same topic on Google. Delete user:
I develop network emulators since 2011, and, even if I’m not a programmer, I can say I did a good job, putting iou-web (at first) and UNetLab (at last) as a good competitor for GNS3 and VIRL without any budget.
A few months ago I prepared a short introduction to automation for a small group of colleagues. Now I would like to summarize in a few posts what I explained to them just to share an overview.
A few months ago I had a chat with a customer about IAAS. The customer wanted to change its business model from an internal ICT only, to an IAAS style ICT, for both internal and external users.
