How can nginx be added to UFW, nginx is not appearing in the UFW lst?

its easy to add your own app:

create a file:

/etc/ufw/applications.d/nginx

with the following content:

[Nginx]
title=Nginx Web Server (HTTP + HTTPS)
description=Small, but very powerful and efficient web server
ports=80,443/tcp

tell ufw about the new app:

ufw app update Nginx

allow Nginx:

ufw allow Nginx

After a bit of tinkering i realized that it's possible to separate the configuration between HTTP and HTTPS. I took the idea from the default configuration of NGINX from the Ubuntu 20.04 repo.

Create ufw nginx conf file

sudo vim /etc/ufw/applications.d/nginx

Add ufw nginx configurations

[Nginx HTTP]
title=Web Server (Nginx, HTTP)
description=Small, but very powerful and efficient web server
ports=80/tcp

[Nginx HTTPS]
title=Web Server (Nginx, HTTPS)
description=Small, but very powerful and efficient web server
ports=443/tcp

[Nginx Full]
title=Web Server (Nginx, HTTP + HTTPS)
description=Small, but very powerful and efficient web server
ports=80,443/tcp

Back to the CLI

ufw app update nginx
ufw allow 'Nginx HTTP'  # Allow HTTP
ufw allow 'Nginx HTTPS'  # Allow HTTP
ufw allow 'Nginx Full'  # Allow HTTP, HTTPS

Output

# > Rule added
# > Rule added (v6)