Hello,

I have a domain registered with Dynu and currently use an ISP connection behind CGNAT (Carrier-Grade NAT), which prevents inbound connections to my self-hosted web services.

I need to set up a VPN tunnel through Dynu that will:

Provide me with a static IP address for DNS resolution
Allow inbound traffic to reach my self-hosted services
Work with OpenWrt router (I can configure custom routing)
My questions:

Does Dynu offer a VPN tunnel service with static IP, and if so, what is the monthly cost?
If available, what are the connection details (VPN server address, port, protocol, authentication method)?
Do you have setup documentation for OpenWrt, or can you provide the technical specifications I need to configure it manually?
Will this service support my traffic profile (~1GB per month, up to 500 client connections)?
I'm prepared to handle custom OpenWrt configuration on my end if needed.

Thank you for your assistance.

Best regards,
Miro

Hi Miro,

You could purchase a cheap but not slow VPS which has a static IP address, set up a VPN tunnel with your OpenWrt router, and then redirect/map your VPS ports to your self-hosted web services ports.

Good Luck :)

Hi v66v,

I understand—if Dynu doesn't support tunnelling, I can setup VPN from VPS on my own. However, I'm wondering if using a VPS would be overkill, especially since if I'd need to pay extra to collect A and MX records and forward them to my private NAT behind the ISP's CGNAT. I haven't tackled this type of work since the early 2010s.

Alternatively, would it make more sense to host everything on a VPS instead, provided nginx and database is light?

Thanks

Hi Miro,

It would be much more convenient to host everything on a VPS. However, there are two things to consider: whether you can tolerate occasional VPS downtime, and whether the cost fits your budget.

I just had another idea: does your ISP assign you an IPv6 prefix? If both your server and your clients have native IPv6 connectivity, then you can bypass CGNAT entirely, which would solve most of the problem.

Let me know what you think!