Smart Firewall → Restore default settings…as test?
Private network? try Public network…as test → Public network exceptions
Allow internet connection sharing?
Blocked devices?
Disable Network discovery and File and printer sharing…in your Windows network settings…as test.
fwiw ~ https://community.norton.com/t/smb-bruteforce/262669
Product & version number:
OS details:
Supporting screenshots:
Learn more about Smart Firewall [here]
Configure Smart Firewall settings [here ]