---
title: nginx-proxy-manager
description: nginx-proxy-manager
author: wompmacho
date: 2025-02-04
lastmod: 2025-02-04
showHero: false
tags: []
---

## What is nginx-proxy-manager?

Nginx-proxy-manager is a simplified GUI for handling an nginx server
configuration. Nginx is a reverse proxy server.

A reverse proxy server is a type of proxy server that typically sits behind the
firewall in a private network and directs client requests to the appropriate
backend server. Nginx is a very common go-to. Nginx-proxy-manager is a nice gui
version that has some built in tools, like handling SSL Certificates with Let's
Encrypt. Nginix can provide load balancing, Web acceleration, Security and
anonymity for servers.

Personally I use nginx to proxy all my traffic to my dedicated servers so that I
do not have to expose local hosts via port forwarding. This also allows me to do
some extra encryption along the way and add additional security via access lists
where I see fit. I can also reuse ports, which saves a lot of time for
configurations.

## Docker Compose Example

```yaml
# nginx-proxy-manager - docker compose
---
version: "3.8"
services:
  app:
    container_name: nginx-proxy-manager
    image: "jc21/nginx-proxy-manager:latest"
    restart: unless-stopped
    ports:
      - "80:80"
      - "81:81"
      - "443:443"
    volumes:
      - ./data:/data
      - ./letsencrypt:/etc/letsencrypt
```

Nginx gives you that great routing to your internal networked servers. Also
helps you set up your DNS both inside and outside the network. Can be a little
confusing at first.

First you will need a route you want to point to. In this case I will use this
site.

I want to be able to type in **wiki.wompmacho.com** and arrive here rather than
remembering my IP address and having to set up multiple complicated port
forwards in my router. Instead nginx allows me to open one port - 80 and direct
all traffic to nginx. Then based on some rules I have set up I can point that
traffic to my internal server. For this I will need a domain name server (DNS)
to point to my external IP.

## DNS

A domain name server (DNS) allows me to make a name that can be easily looked up
and point traffic to an Internet Protocol (IP) address that a server can easily
understand.

I can type in a name to a browser - my browser will ask my computers dns cache
_where is google.com_ and when not found - it will ask my router _where is
google.com_ which will then ask the dns server it is pointed to (typically your
ISP) who then asks the dns server the ISP is pointing to... and so on until
eventually one of the DNS servers contain the information about _google.com_.
Then it can retrieve the IP address of that server and send that information
back down the line - adding it to its own cache as it goes so that it does not
have to keep looking up this information. This will allow the browser to make
requests to that server directly.

In order to make my dns name known so that people can find it on the internet
easily, We will have to purchase the name from a host of an Authoritative DNS
server. An Authoritative DNS server will not cache the info, but instead act as
a primary resource of the configuration for a dns name so other dns servers can
ask for that resource.

In this example I have purchased **wompmacho.com** from cloudflare who operate
as a registrar and facilitates purchasing that name from a higher authoritative
registry. Allowing me to point my external IP address to this address.

Once I have a DNS name I can use my registar (cloudflare) to point that name to
my external IP address (my router's IP address).

> [!INFO] wompmacho.com <> 175.222.222.222

### Port forwarding

This traffic will then be requested from my router which _should_ be typically
set up to block incoming requests. In order to allow a request to my server
hosting my site I will need to open a port (80) and allow traffic through my
router's firewall to my docker container that is hosting nginx-proxy-manager.
Nginx will then redirect this again to my docker container for my site.

### A records

For my scenario my dns name is **wompmacho.com** but if I want to have multiple
sites at my IP address I will need to be able to differentiate them. To do this
I will use an A record. This allows me to split up my domain with multiple sub
domains.

- wiki.wompmacho.com
- **subdomain**.wompmacho.com

### Setting up a proxy

This will point traffic to the same domain (wompmacho.com) but based on the
sub-domain nginx will be able to direct and load balance traffic to my internal
server hosting the wiki - in this case also my docker container. The wiki is
hosted on a different port. We can point this proxy to that port.

![nginx_proxy_host_setup.png](nginx_proxy_host_setup.png#center)

### Cloudflare DNS Proxy

An example of a dns service is Cloudflare. I switched over to cloudflare when
google sold their awesome DNS. I have been loving it since the switch, there is
a lot of info out there on services they offer and how to set things up. The
biggest reason I switched over to cloudflare is their dns proxy. This allows my
home IP to be proxied behind cloudflare services - and helps hide my servers
location. This also allows me to utilize their services to block things like
botnet attacks.

![cloudflare_ssl_example.png](cloudflare_ssl_example.png#center)

#### SSL encryption

Secure Sockets Layer (SSL) is a security protocol that provides privacy,
authentication, and integrity to Internet communications. SSL eventually evolved
into Transport Layer Security (TLS). Using Nginx-proxy-manager we can connect
our cloudflare DNS to our nginx server using SSL encryption. This is what that
lock and **https** indicates on your browser - you are using a secured and
verified connection to the server. This helps stop man in the middle attacks
preventing people from spoofing the connection and spying on you.

![ssl_connection_lock.png](ssl_connection_lock.png#center)

We do this by adding a cloudflare certificate to nginx proxy manager and then
setting up our proxy host to use this certificate on the SSL tab.

![cloudflare_ssl_setup_example.png](cloudflare_ssl_setup_example.png#center)

![nginx_ssl_setup_example.png](nginx_ssl_setup_example.png#center)

> [!INFO] Note this is is only for a secure connection between **nginx <-> cloudflare**

The details page is referring to your internal setup - or where nginx should
point the dns to.

> [!INFO] **origin server <-> nginx**

Use https here only if you have ssl setup on your origin server and your server
is set up to accept https, otherwise you make get bad gateway 502 errors.

![nginx_ssl_internal_scheme_example.png](nginx_ssl_internal_scheme_example.png#center)
