How to create a reverse proxy?

[Macrisu]

Until now I used a Synology NAS and was easy to set up a reverse proxy for my docker apps.

My ISP is giving me a dynamic DNS, so my wan IP can be always accessed via xxx.go.ro

Usually, I had like this:

HTTPs://xxx.go.ro:8080 -> NAS IP: 8081 -> reverse proxy -> docker container:8080

I've installed Ngix Prix Manager on rpi + created an SSL certificate for xxx.go.ro

I've created a port fwd on my router
https://xxx.go.ro:8080 -> rPI:8081

How can I tell Nginx Proxy Manager, to redirect any requests from 8081 to the docker container, port 8080?

All the services are running on rpi Docker containers, and this seems to be the problem

[bmmmm]

If I got you right... Nginx Proxy Manager and the other services are running on same machine (rpi)?
if yes, you can use the docker container names to forward your traffic.
e.g. add nextcloud-app-1 as Forward Hostname / IP

How can I tell Nginx Proxy Manager, to redirect any requests from 8081
you need to configure Nginx Proxy Manager to listen on that port for HTTP? requests.

The domain field is needed to distinguish the service you want to address.

But... it might become very scatchi with all your port mappings...

The idea of Nginx Proxy Manager is to send all your traffic to Nginx Proxy Manager on default ports (80,443) and based on the domain, dispatch it to the corresponding service.

/edit/
I just figgured out that it is already written here 😉: https://nginxproxymanager.com/guide/#hosting-your-home-network

I suggest the following:

• if you are not able to create subdomains, get an own domain for 5 bucks a year or use a dyn dns provider to publish your IP (from your router/rpi) to the internet
• only forward port 80 and 443 from your router to rpi (Nginx Proxy Manager).
• Nginx Proxy Manager listens to port 80 and 443.
• Nginx Proxy Manager forwards based on domain / subdomains to the corresponding service to any port you want 😉.
• e.g. nextxloud.YOURDOMAIN.com , service2.YOURDOMAIN.com , service3.YOOURDOMAIN.com ...

[Macrisu]

Thank you!
I have a lot of unused domains, so I've created a namecheap account for dynamic DNS.
I use Unifi UDM as a router and Namecheap is supported.

Tutorials for this:
https://www.namecheap.com/support/knowledgebase/article.aspx/583/11/how-do-i-configure-ddclient/
https://daltonflanagan.com/configuring-ubiquiti-unifi-usg-for-namecheap-ddns/