How To Set Up Password Authentication with Nginx on Ubuntu 22.04

How To Set Up Password Authentication with Nginx on Ubuntu 22.04
Not using Ubuntu 22.04?Choose a different version or distribution.
Ubuntu 22.04


When setting up a web server, there are often sections of the site that you wish to restrict access to. Web applications often provide their own authentication and authorization methods, but the web server itself can be used to restrict access if these are inadequate or unavailable. In this guide, you’ll password protect assets on an Nginx web server running on Ubuntu 22.04.


To get started, you will need:

Step 1 — Creating the Password File

To start out, you need to create a file that will hold your username and password combinations. You can do this by using the OpenSSL utilities that may already be available on your server. Alternatively, you can use the purpose-made htpasswd utility included in the apache2-utils package (Nginx password files use the same format as Apache). Choose the method below that you like best.

Option 1 — Creating the Password File Using the OpenSSL Utilities

If you have OpenSSL installed on your server, you can create a password file with no additional packages. You will create a hidden file called .htpasswd in the /etc/nginx configuration directory to store your username and password combinations.

You can add a username to the file using this command. sammy is used here as the username, but you can use whatever name you’d like:

  1. sudo sh -c "echo -n 'sammy:' >> /etc/nginx/.htpasswd"

Next, add an encrypted password entry for the username by typing:

  1. sudo sh -c "openssl passwd -apr1 >> /etc/nginx/.htpasswd"

You can repeat this process for additional usernames. You can see how the usernames and encrypted passwords are stored within the file by typing:

  1. cat /etc/nginx/.htpasswd

Option 2 — Creating the Password File Using Apache Utilities

While OpenSSL can encrypt passwords for Nginx authentication, many users find it easier to use a purpose-built utility. The htpasswd utility, found in the apache2-utils package, serves this function well.

Install the apache2-utils package on your server by typing:

  1. sudo apt update
  2. sudo apt install apache2-utils

Now, you have access to the htpasswd command. You can use this to create a password file that Nginx can use to authenticate users. Create a hidden file for this purpose called .htpasswd within your /etc/nginx configuration directory.

The first time you use this utility, you need to add the -c option to create the specified file. Specify a username (sammy in this example) at the end of the command to create a new entry within the file:

  1. sudo htpasswd -c /etc/nginx/.htpasswd sammy

You will be asked to supply and confirm a password for the user.

Leave out the -c argument for any additional users you wish to add:

  1. sudo htpasswd /etc/nginx/.htpasswd another_user

If you view the contents of the file, you can see the username and the encrypted password for each record:

  1. cat /etc/nginx/.htpasswd
sammy:$apr1$lzxsIfXG$tmCvCfb49vpPFwKGVsuYz. another_user:$apr1$p1E9MeAf$kiAhneUwr.MhAE2kKGYHK.

Step 2 — Configuring Nginx Password Authentication

Now that you have a file with your users and passwords in a format that Nginx can read, you need to configure Nginx to check this file before serving your protected content.

Begin by opening up the server block configuration file that you wish to add a restriction to. For your example, you’ll be using the default server block file installed through Ubuntu’s Nginx package:

  1. sudo nano /etc/nginx/sites-enabled/default

To set up authentication, you need to decide on the context to restrict. Among other choices, Nginx allows you to set restrictions on the server level or inside a specific location.

This example will be for a server level restriction. The auth_basic directive turns on authentication and a realm name to be displayed to the user when prompting for credentials. You will use the auth_basic_user_file directive to point Nginx to the password file you created:

server {
    listen 80 default_server;

     . . .
    auth_basic "Restricted Content";
    auth_basic_user_file /etc/nginx/.htpasswd;

Note: Depending on which block you place the restrictions, you can control the granularity of which parts of your site require a password. This alternative example restricts only the document root with a location block, and you can even modify this listing to only target a specific directory within the web space:

server {
    listen 80 default_server;

     . . .
    location / {
    try_files $uri $uri/ =404;
    auth_basic "Restricted Content";
    auth_basic_user_file /etc/nginx/.htpasswd;

Save and close the file when you are finished. Restart Nginx to implement your password policy:

  1. sudo systemctl restart nginx

The directory you specified should now be password protected.

Step 3 — Confirming the Password Authentication

To confirm that your content is protected, try to access your restricted content in a web browser:


You should be presented with a username and password prompt:

Nginx password prompt

If you enter the correct credentials, you will be allowed to access the content. If you enter the wrong credentials or hit “Cancel”, you will see the “Authorization Required” error page:

Nginx unauthorized error


You should now have everything you need to set up basic authentication for your site. Keep in mind that password protection should be combined with TLS encryption so that your credentials are not sent to the server in plain text. Check out this guide on how to secure Nginx with Let’s Encrypt on Ubuntu 22.04

Thanks for learning with the DigitalOcean Community. Check out our offerings for compute, storage, networking, and managed databases.

Learn more about our products

About the authors

Default avatar
Tony Tran


Still looking for an answer?

Ask a questionSearch for more help

Was this helpful?

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Please don’t use the -aprl option as it uses MD5 encryption. Use either -5 or -6 for SHA256/SHA512.

Try DigitalOcean for free

Click below to sign up and get $200 of credit to try our products over 60 days!

Sign up

Join the Tech Talk
Success! Thank you! Please check your email for further details.

Please complete your information!

Featured on Community

Get our biweekly newsletter

Sign up for Infrastructure as a Newsletter.

Hollie's Hub for Good

Working on improving health and education, reducing inequality, and spurring economic growth? We'd like to help.

Become a contributor

Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.

Welcome to the developer cloud

DigitalOcean makes it simple to launch in the cloud and scale up as you grow — whether you're running one virtual machine or ten thousand.

Learn more
DigitalOcean Cloud Control Panel