TL;DR To quickly set up OpenVPN with MFA on Debian 13, follow these steps: Install OpenVPN and Easy-RSA: sudo apt update sudo apt install openvpn easy-rsa # Install OpenVPN and Easy-RSA Set Up the CA Directory: make-cadir ~/openvpn-ca # Create a directory for the CA cd ~/openvpn-ca Configure the CA Variables: ...
TL;DR To quickly set up Tailscale for private admin access on a Debian 13 server, follow these steps. This guide assumes you have root or sudo privileges. Install Tailscale: First, update your package list and install the necessary packages to add Tailscale’s repository. sudo apt update sudo apt install -y curl gnupg Add Tailscale’s GPG key and repository: ...
TL;DR To update air-gapped Debian 13 servers, follow these steps to ensure security and consistency: Prepare an Update Mirror: Use a connected Debian server to download updates. sudo apt update # Download packages to a local directory sudo apt-get -d -o Dir::Cache::archives="/path/to/mirror" upgrade Ensure /path/to/mirror is accessible and has enough space. ...
TL;DR To implement strong cryptography policies on Debian 13, follow these steps to ensure your system uses secure defaults and disables weak algorithms: Update Your System: Always start by ensuring your system is up-to-date. sudo apt update && sudo apt upgrade -y # Update packages Configure OpenSSL: Edit the OpenSSL configuration to enforce strong cryptographic standards. ...
TL;DR This guide provides a quick overview of automating the hardening of Debian 13 using Ansible, following the CIS Benchmarks. The goal is to enhance security by applying recommended configurations efficiently. Install Ansible: Ensure Ansible is installed on your control node. sudo apt update sudo apt install ansible -y # Install Ansible Create an Inventory File: Define your Debian 13 servers. ...
TL;DR To quickly set up an encrypted email infrastructure on Debian 13, follow these steps. This guide assumes you have root access and a basic understanding of email protocols. Install Required Packages: Start by installing Postfix and Dovecot, which will handle sending and receiving emails. sudo apt update sudo apt install postfix dovecot-core dovecot-imapd dovecot-lmtpd Configure Postfix: Edit the Postfix configuration to set up a basic SMTP server with TLS encryption. ...
TL;DR To quickly set up rspamd for advanced mail filtering on Debian 13, follow these steps. This guide assumes you have a working mail server setup and root or sudo access. Install Rspamd: First, ensure your package list is up to date and install rspamd: sudo apt update sudo apt install rspamd Enable and Start Rspamd Service: ...
TL;DR To quickly configure OpenDMARC, DKIM, and SPF for Postfix on Debian 13, follow these steps. This guide assumes you have Postfix already installed and running. Install Required Packages: sudo apt update sudo apt install opendmarc opendkim postfix-policyd-spf-python Configure OpenDKIM: Edit /etc/opendkim.conf to include: AutoRestart Yes AutoRestartRate 10/1h Syslog Yes SyslogSuccess Yes LogWhy Yes Canonicalization relaxed/simple Selector default KeyFile /etc/opendkim/keys/default.private SigningTable refile:/etc/opendkim/SigningTable KeyTable refile:/etc/opendkim/KeyTable InternalHosts /etc/opendkim/TrustedHosts Generate DKIM keys: ...
TL;DR To quickly set up Netdata on Debian 13 for detecting system resource abuse and configuring alerts, follow these steps: Install Netdata: Use the official script to ensure you get the latest version. bash <(curl -Ss https://my-netdata.io/kickstart.sh) --stable-channel Start and Enable Netdata: Ensure Netdata starts on boot. # Enable and start the Netdata service sudo systemctl enable netdata sudo systemctl start netdata Configure Firewall: Allow access to Netdata’s web interface on port 19999. ...
TL;DR To set up secure WORM backups using ZFS on Debian 13, follow these steps for a quick implementation. This guide assumes you have ZFS installed and a pool ready. Create a ZFS Dataset for Backups: sudo zfs create poolname/backup Set Immutable Properties: Enable the readonly property to prevent accidental writes: ...
