How to enable TLS 1.3 in Nginx service of Ubuntu & Debian Cloud Servers (with Cipher Suites included)

2020-10-15 By Kelvin 48 Views linux security nginx tls
0 reviews

Transportation Layer Security (TLS) is a cryptographic protocol and it provides the security for the delivery of data over the internet. TLS 1.3 is faster than TLS 1.2 because the handshake for the TLS 1.3 is reduced to just one round-trip.

This can easily be enabled in a Linux based server. This guide outlines the basic steps involved in in Ubuntu & Debian server (provided Nginx service is already installed in the server).


Requirements:

  1. Server running on Ubuntu/Debian.

  2. A valid domain name and properly configured A/AAAA/CNAME DNS records.

  3. A valid TLS certificates. Here using from Let’s encrypt.

  4. Nginx version 1.13.0 or greater.

  5. OpenSSL version 1.1.1 or greater.


Before the beginning,


  1. Check the Debian version by using the below command.

    # lsb_release -ds
    

    nginxtlscipher15

  2. By using the below command ensure that the server is up to date.

    # apt update && sudo apt upgrade
    

    nginxtlscipher16

  3. Install the needed packages by using the below command.

    # apt install git unzip curl sudo socat build-essential
    

    nginxtlscipher17


Step A. Install the acme.sh client and obtain a TLS certificate from Let's Encrypt.


acme.sh is used to install, renew and remove SSL certificates and it is written purely in Shell (Unix shell) language, compatible with bash, dash, and sh shells.


  1. Install acme.sh with the below commands.

    # git clone https://github.com/acmesh-official/acme.sh
    
    # cd acme.sh
    
    # ./acme.sh --install –accountemail [email protected]
    
    # cd ~
    
    # source ~/.bashrc
    

    nginxtlscipher18

    nginxtlscipher19

    NOTE: Replace the mail account with your mail account name.

  2. Check the version of acme.sh.

    # acme.sh --version
    

    nginxtlscipher20

  3. Obtain RSA and ECDSA certificates for the domain.

    # RSA
    acme.sh --issue --standalone -d example.com --keylength 2048
    
    # ECC/ECDSA
    acme.sh --issue --standalone -d example.com --keylength ec-256
    

    nginxtlscipher21

    nginxtlscipher22

  4. Create directories to store your certs and keys in then, install and copy certificates to /etc/letsencrypt.

    # mkdir -p /etc/letsencrypt/testlayerstack.com
    
    # mkdir -p /etc/letsencrypt/testlayerstack.com_ecc
    

    nginxtlscipher23


    # acme.sh --install-cert -d testlayerstack.com --cert-file /etc/letsencrypt/testlayerstack.com/cert.pem --key-file /etc/letsencrypt/testlayerstack.com/private.key --fullchain-file /etc/letsencrypt/testlayerstack.com/fullchain.pem
    
    # acme.sh --install-cert -d testlayerstack.com --ecc --cert-file etc/letsencrypt/testlayerstack.com_ecc/cert.pem --key-file /etc/letsencrypt/testlayerstack.com_ecc/private.key --fullchain-file /etc/letsencrypt/testlayerstack.com_ecc/fullchain.pem
    

    nginxtlscipher24

    nginxtlscipher25

  5. After running the above commands, your certificates and keys will be in the below mentioned locations:

    RSA: /etc/letsencrypt/testlayerstack.com
    
    ECC/ECDSA: /etc/letsencrypt/testlayerstack.com_ecc
    


Step B. Configure Nginx for TLS 1.3


  1. Install the latest version of Nginx.

    # apt install nginx
    

    nginxtlscipher26

  2. Check the Nginx version then, start and enable using below commands.

    # nginx -v
    
    # systemctl start nginx.service
    
    # systemctl enable nginx.service
    

    nginxtlscipher27

  3. Run the below command and add the following basic configurations in that file.

    # vim /etc/nginx/conf.d/testlayerstack.com.conf
    
    server {
    
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    
    # RSA
    ssl_certificate /etc/letsencrypt/testlayerstack.com/fullchain.cer;
    ssl_certificate_key /etc/letsencrypt/testlayerstack.com/testlayerstack.com.key;
    
    # ECDSA
    ssl_certificate /etc/letsencrypt/testlayerstack.com_ecc/fullchain.cer;
    ssl_certificate_key /etc/letsencrypt/_ecc/testlayerstack.com.key;
    
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';
    ssl_prefer_server_ciphers on;
    

    nginxtlscipher28

  4. Then Save and Exit the file.

    NOTE: Replace testlayerstack.com in commands with your valid domain name.

  5. Reload the Nginx to activate the new configuration.

  6. Now you can verify TLS 1.3 by using any browser dev tools or SSL Labs service such as given below.

    https://www.ssllabs.com/ssltest/
    


Related Tutorials

What do you think about this article?

Rate this article