I'm pretty new to selfhosting and homelabs, and I would appreciate a simple-worded explanation here. Details are always welcome!
So, I have a home network with a dynamic external IP address. I already have my Synology NAS exposed to the Internet with DDNS - this was done using the interface, so didn't require much technical knowledge.
Now, I would like to add another server (currently testing with Raspberry Pi) in the same LAN that would also be externally reachable, either through a subdomain (preferable), or through specific ports. How do I go about it?
P.S. Apparently, what I've tried on the router does work, it's just that my NAS was sitting in the DMZ. Now it works!
What do you mean by blocked at a protocol level? You might give it a try on a random port to see what happens.
You could also look into port knocking. It is dated but still worth while.
I mean any connection through these protocols is just not working over the Internet. DPI equipment detects respective packets and cuts the connection, irrespective of the port you assign.