DSL-AC88U Port Forwarding doesn't seem to be working when not in the local network

[kaanaslan]

Hello,

I have a DL-AC88U Modem and I'm trying to make the Port Forwarding work.

I setup a DDNS through the modem's asuscomm.com DDNS service.

I forward the port 5000 to 192.168.1.100 (which is the static ip of the device I set up in the modem) with the port 5000.
I also forward the port 2000 to 192.168.1.300 (another static ip of another device - raspberry pi) with the port 443.

When I'm connected to the internet and if I try to access these ports via web browser both by entering the local IP adress as 192.168.1.100:5000 and also by entering myddnsaddress.asuscomm.com:5000, I can connect to the devices.

But when I try to connect to the myddnsaddress.asuscomm.com:5000 from another computer which is not in my home network, I can't reach it. When I saw that I could connect to this address from my desktop, I assumed the port forwarding was working because I was using the ddns address. But I don't know why it's not working when I'm outside of my home network.

I don't understand why this port forwarding has always issues and not straight forward.

Could you please help me? What should I check?

 

[kaanaslan]

I think I found the problem. My WAN IP address is not the same with my Public IP. That's why I'm having issues. It looks like my service provider put me in a CGN pool. It may be difficult to have them take me out of this pool but I'll try. Otherwise there is no other way for me to get a Static IP to make all the port forwardings work.

 

[L&LD]

Use OpenVPN to connect to your home network. Do not open holes in your firewall for no reason.

 

[kaanaslan]

Use OpenVPN to connect to your home network. Do not open holes in your firewall for no reason.

I don't know how to use it yet. Is it free or do I have to make a payment?

I'm trying to setup NextCloudPi in my network but I want to be able to access to my cloud from anywhere even from outside my local network. So in order to do that I set my ddns and tried to forward the port in order to access to my data from outside. (Local network works fine without forwarding )

How this OpenVPN will help me? Do I have to make the setting on the modem or do I also have to adjust something on Raspberry Nextcloudpi os?

thank you.

 

[L&LD]

There's always search.

OpenVPN Connect - VPN For Your Operating System | OpenVPN

Download the official OpenVPN Connect client VPN software for your operating system, developed and maintained by our experts. Get started with our VPN software.

openvpn.net

 

[kaanaslan]

There's always search.

OpenVPN Connect - VPN For Your Operating System | OpenVPN

Download the official OpenVPN Connect client VPN software for your operating system, developed and maintained by our experts. Get started with our VPN software.

openvpn.net

Yeah, I was also reading something about it. But I want to ask; so let's say that I have Open VPN in my router, do I still need to use DDNS if I don't have a static IP in order to connect to my local network from outside?