Yunohost diagnosis complains about port 445 not forwarded on router

[renne]

Describe the bug

Yunohost diagnosis complains about port 445 not accessible from public internet.

Context

• Hardware: Proxmox Virtual Environment 7 kvm amd64 QEMU Standard PC (Q35 + ICH9, 2009)
• YunoHost version: 11.1.20
• I have access to my server: SSH | webadmin | direct access via keyboard / screen
• Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: no
• Using, or trying to install package version/branch: 4.9.5~ynh3

Steps to reproduce

Run Yunohost diagnosis or activate diagnosis mails.

Expected behavior

For security reasons SMB port 445 must not be accessible from the public internet. Check if port 445 is closed on the router or do not check forwarding of port 445 at all.