Static IP address and Dynamic DNS can expose your network to attackers on the internet. With Holesail, you expose only the port you choose.

Er, wut? If you're exposing a port, then your public IP is being used, as a port is a subset of an IP interface. So even Holesail uses the public IP in some way...thats how the internet works. Unless they're only making outbound connections, which isn't a new idea at all - Hamachi was doing it 20 years ago.

This sounds like FUD to me - of course your public IP is used, whether static or dynamic. How do they supposedly mitigate this risk?

There's nothing on the home page saying how it works, or how it's different than current solutions.

I'm intrigued to see a new tool in this space, but this one is starting off leaving a bad taste. Even Tailscale admits they use Wireguard, and even have a comparison between Wireguard and Tailscale that's pretty honest (though they focus on what Tailscale adds).

Being open and transparent is a minimum today - anything less and it's not worth the time for a second look.