Connection attempts https://proxmox.hometg.org

If this is an outward connection check grep -sRE "hometg|104.21.16.1" / on your node and guests to see what references that.
If not I assume this is your domain and server that is accessible publically? Please share your firewall logs.
 
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No. This is not my proxmox instance.

In the logs, including debug, access to this IP is not logged.
They are only visible on the firewall.

I tried to install proxmox from 0, and without configuring it in any way, it also tried to access this IP.
 
clean Proxmox without any vm/lxc.
On firewall:
src ip pve node src port different port to dst ip 104.21.16.1 dst port 443.
 
A little more detail:
When we noticed attempts to connect to this IP, we immediately turned on debug mode.

Since there is a VM on the existing instances, an empty proxmox was deployed without a VM, lxc.

The connection attempts themselves are not only to this IP, but also to some others.

We found a proxmox instance behind one of the IPs that belongs to cloudflare:

https://proxmox.hometg.org/#v1:0:18:4:::::::

I see connection attempts to at least two IP addresses of this instance.

There is nothing useful in the debug. The scheduler task update databases does not match the connection attempts.
 
Is this pve installation a cloud instance? Where is install iso from?
 
We strongly recommend not exposing your Proxmox instance on the public Internet, and also posting a link to it on this forum is not a good idea either. Use a VPN to access remote Proxmox instances. You also won't have the issue of random IPs probing your server then.

edit: sorry, misinterpreted the initial post - as floh8 already said: where did you get the ISO from? Proxmox shouldn't randomly connect to other instances, so it's probably some misconfiguration? What changes did you make to your Proxmox Instance? What domain name do you have set up?
 
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