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Nginx SSL/TLS configuration for "A+" Qualys SSL Labs rating
#
# Name: nginx-tls.conf
# Auth: Gavin Lloyd <gavinhungry@gmail.com>
# Desc: Nginx SSL/TLS configuration for "A+" Qualys SSL Labs rating
#
# Enables HTTP/2, PFS, HSTS and OCSP stapling. Configuration options not related
# to SSL/TLS are not included here.
#
# Additional tips:
#
# * Enable CAA DNS record: https://sslmate.com/caa
#
# Example: https://www.ssllabs.com/ssltest/analyze.html?d=gavinhungry.com
#
server {
listen [::]:80;
listen 80;
server_name domain.tld www.domain.tld;
# Redirect all non-https requests
rewrite ^ https://$host$request_uri? permanent;
}
server {
listen [::]:443 ssl http2 default_server;
listen 443 ssl http2 default_server;
server_name domain.tld www.domain.tld;
# Certificate(s) and private key
ssl_certificate /etc/ssl/domain.crt;
ssl_certificate_key /etc/ssl/domain.key;
# RFC-7919 recommended: https://wiki.mozilla.org/Security/Server_Side_TLS#ffdhe4096
ssl_dhparam /etc/ssl/ffdhe4096.pem;
# Or, generate random dhparam
# openssl dhparam 4096 -out /etc/ssl/dhparam.pem
# ssl_dhparam /etc/ssl/dhparam.pem;
ssl_protocols TLSv1.3 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ecdh_curve secp521r1:secp384r1;
ssl_ciphers EECDH+AESGCM:EECDH+AES256;
ssl_session_cache shared:TLS:2m;
ssl_buffer_size 4k;
# OCSP stapling
ssl_stapling on;
ssl_stapling_verify on;
resolver 1.1.1.1 1.0.0.1 [2606:4700:4700::1111] [2606:4700:4700::1001]; # Cloudflare
# Set HSTS to 365 days
add_header Strict-Transport-Security 'max-age=31536000; includeSubDomains; preload' always;
}
@sinns804

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@sinns804 sinns804 commented Sep 8, 2016

Sweet example! Thanks a bunch :D!

@ghost

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@ghost ghost commented Nov 3, 2016

Works great with few modifications...

The spdy option has been superseded with http2

Also I would recommend expanding your resolver line: resolver 8.8.8.8 8.8.4.4 [2001:4860:4860::8888] [2001:4860:4860::8844]

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@danday74 danday74 commented Jan 30, 2017

add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always; ... if you want A+ on a subdomain ... also, if using Let's encrypt and you want a score of 100 on key exchange then you must generate them with the flag --rsa-key-size 4096 and the usual openssl dhparam -out dhparam.pem 4096

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@danday74 danday74 commented Jan 31, 2017

Based on this config, 5 others and some extensive testing, I have put together a config that describes exactly how each NGINX directive will effect your SSL Labs score - see http://stackoverflow.com/questions/41930060/how-do-you-score-a-with-100-on-all-categories-on-ssl-labs-test-with-lets-encry - thanks for helping me put it together

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@jult jult commented Nov 16, 2017

You can use dnsmasq for even faster and more secure lookups for the resolver entry, and then use my include= example
for TLS/SSL with nginx: https://gist.github.com/jult/395ad9fd3e9773a54a67aaf689beab27

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@perguth perguth commented Jan 15, 2018

I'd rather go for the 2048 long ssl_dhparam on my RaspberryPi like recommended here: https://gist.github.com/plentz/6737338#file-nginx-conf-L57 It just takes too damn long. 😂

@ldhgrp-digtial

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@ldhgrp-digtial ldhgrp-digtial commented Jan 27, 2018

worked for me without OSCP stalping,
Thanks a lot.

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@geronime geronime commented Mar 5, 2018

Based on https://security.stackexchange.com/a/95184/172143 it might make sense to use the -dsaparam option for the openssl dhparam command. Instead of hours it takes just a while to generate and I still get an A+.

@C0nw0nk

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@C0nw0nk C0nw0nk commented Sep 24, 2018

Here is my code for their resolver to support both IPv4 and IPv6 (Can disable IPv6 and will still work universal setup)

#Cloudflare resolver 1dot1dot1dot1.cloudflare-dns.com
resolver 1.1.1.1 1.0.0.1 [2606:4700:4700::1111] [2606:4700:4700::1001];

https://1.1.1.1/#explanation
https://www.cloudflare.com/learning/dns/what-is-1.1.1.1/
https://blog.cloudflare.com/announcing-1111/

Fastest DNS resolvers in the world (1.1.1.1 is the fastest most secured and private unlike google)
https://www.dnsperf.com/#!dns-resolvers

@ItsIrv

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@ItsIrv ItsIrv commented Sep 17, 2020

ssl_protocols TLSv1.3 TLSv1.2 TLSv1.1 TLSv1

needs to be changed to

ssl_protocols TLSv1.3 TLSv1.2;

per https://blog.qualys.com/product-tech/2018/11/19/grade-change-for-tls-1-0-and-tls-1-1-protocols

@dbrossard

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@dbrossard dbrossard commented Oct 27, 2020

Doesn't seem to work. I still get warnings on all CBC ciphers so I only get an A, not A+:

`

TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)   WEAK 128
`
@dlangille

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@dlangille dlangille commented Jan 10, 2021

Doesn't seem to work. I still get warnings on all CBC ciphers so I only get an A, not A+:

Note the last update to this gist was on Nov 2, 2018

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Owner Author

@gavinhungry gavinhungry commented Jan 11, 2021

@ItsIrv @dbrossard @dlangille,

Thanks for the reminders that I've been letting this stagnate. I've just now applied what I think are sensible updates - feedback/tips/corrections welcome.

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@dlangille dlangille commented Jan 11, 2021

@ItsIrv @dbrossard @dlangille,

Thanks for the reminders that I've been letting this stagnate. I've just now applied what I think are sensible updates - feedback/tips/corrections welcome.

Take anything you like from what I just put up: https://github.com/FreshPorts/nginx-config/blob/main/virtualhost-common-ssl.conf

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