How To Install And Configure Nginx On Your Linux Server

This guide walks you through installing Nginx on an Ubuntu server, allowing HTTP through the firewall, and confirming everything in the browser. Work through the steps in order; each block tells you why you are running a command, not only what to paste.

Only need the commands? Use the snippet Nginx on Ubuntu — install and firewall commands — one copy-paste block, no explanations.

What you will accomplish

By the end you will have:

• A running Nginx web server listening on the usual HTTP port.
• UFW rules so browsers can reach Nginx from the internet (for typical cloud setups).
• A simple sanity check: the default Nginx page loads when you visit the server’s public IP.

Before you start

• Ubuntu (or another Debian-based distro using apt). The commands below target Ubuntu; other families use different package managers (see the expandable note below).
• SSH access with sudo (for example, an EC2 instance and its public IP).
• Optional but useful: note your instance’s public IPv4 from the cloud console before you open the browser test.

What is Nginx?

Nginx is open-source software often used as a web server or reverse proxy. It serves static files efficiently and sits in front of app servers in many production stacks.

Step-by-step installation

Step 1 — Update packages

Refreshing the package index (and upgrading installed packages) reduces “weird install” issues from stale metadata.

sudo apt-get update && sudo apt-get upgrade

Step 2 — Install Nginx

This installs the server binary, default site config, and systemd service.

sudo apt install nginx

Step 3 — Allow Nginx through UFW

ufw is Ubuntu’s friendly front end to the firewall. Nginx Full opens 80 (HTTP) and 443 (HTTPS), which saves you a second pass when you later add TLS.

sudo ufw app list
sudo ufw allow 'Nginx Full'

If you only want HTTP for now, you can use sudo ufw allow 'Nginx HTTP' instead.

Step 4 — Check that Nginx is running

systemctl status shows whether the unit is active, recent log lines, and whether it will start on boot.

sudo systemctl status nginx

Verify in the browser

1. Copy your server’s public IP from your cloud provider (or run curl -4 ifconfig.me from the server if outbound HTTP is allowed).
2. Paste it into a browser address bar (http://YOUR_IP).

You should see the default “Welcome to nginx!” page served from /var/www/html (default install).

What next?

• TLS: Once you have a domain pointing at this server, follow a Let’s Encrypt workflow—for example the Certbot + Nginx guide on this site.
• Real sites: Add a server { ... } block (or a file in sites-available) for your domain and reload Nginx.
• Troubleshooting: sudo nginx -t validates config before reload; check error.log under /var/log/nginx/ if something refuses to start.

If you hit a snag, note your Ubuntu version, the exact systemctl status line, and any nginx -t output—that makes it much easier to narrow down.