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Guides from the NOC

Written from running the hardware — what breaks, why, and the command that fixes it.

7 posts matching “ufw” in VPS · Clear

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VPS Docker Bypassing Your UFW Firewall? Here's the Real Fix

Published Docker container ports staying open even after UFW denies them? Learn why Docker bypasses UFW via iptables, and how to actually lock it down.

30 July 2026 · 7 min · 9 views VPS VPS Firewall Basics: Set Up UFW and Close Open Ports

Learn how to set up UFW on your VPS, allow only the ports you need, and stop random port scans from finding an open door into your server.

12 July 2026 · 6 min · 2 views VPS How to Enable IPv6 on Your VPS Without Breaking SSH

Adding IPv6 to your VPS? Learn how to configure netplan, UFW/ip6tables, and SSH the right way so IPv6 works without locking you out or breaking IPv4.

5 August 2026 · 6 min · 5 views VPS Firewalld on AlmaLinux: A VPS Firewall Setup Guide

UFW commands don't work on AlmaLinux. Learn firewalld zones, firewall-cmd basics, and how to secure a fresh AlmaLinux or CentOS VPS without locking yourself...

30 July 2026 · 7 min · 8 views VPS Automate VPS Setup With Ansible: A Beginner's Playbook

Automate VPS provisioning with Ansible: create users, harden SSH, configure ufw and fail2ban, and install your stack from one idempotent playbook.

27 July 2026 · 7 min · 4 views VPS Locked Out of Your VPS? How to Regain SSH Access Fast

SSH connection refused or timed out on your VPS? Learn how to regain access via console, unban your IP, fix UFW rules, and reset your root password.

16 July 2026 · 6 min · 10 views VPS VPS First-Hour Checklist: Secure a Fresh Server Fast

New VPS setup checklist: SSH keys, sudo user, UFW firewall, swap, fail2ban and a snapshot baseline - all in the critical first hour after deployment.

12 July 2026 · 5 min