WireGuard VPN Server Setup on Linux (Step-by-Step Guide)
Build a WireGuard VPN server on Linux: keys, wg0.conf, NAT and firewall rules, client configs, and peer management.
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nftables Firewall Basics on Linux (Replace iptables)
Configure nftables firewall on Rocky Linux, AlmaLinux, and Fedora. Allow SSH and web ports with a simple ruleset.
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iptables Firewall Backup & Restore Shell Script for Linux
Backup and restore iptables firewall rules on Linux with a Bash script. Save rules before updates or reboots.
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UFW Firewall Basics: Secure Your Linux Server
Configure UFW firewall on Ubuntu and Debian. Allow SSH, HTTP, HTTPS and block unwanted traffic.
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Proxmox Firewall Configuration for VMs and Host
Configure Proxmox firewall rules for datacenter, node, and VM level. Secure your Proxmox host and virtual machines.
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