Before changing settings, confirm the app is actually "listening" for traffic. How to Resolve Hamachi Inbound Traffic Blocked Issue
Firewalls filter traffic based on rules. Inbound traffic originates from an external source and targets a service on your machine (e.g., a web server on port 80, an SSH daemon on port 22, or a game server on port 25565).
Find your app (e.g., hamachi-2-ui.exe ) in the list. Ensure both and Public checkboxes are ticked. inbound traffic blocked, check firewall settings
If problems persist, check for conflicting VPNs, proxy settings, or SELinux (Linux) which can also deny network access independently of the firewall.
sudo ufw disable # ufw sudo systemctl stop firewalld # firewalld sudo iptables -P INPUT ACCEPT # iptables (dangerous) Before changing settings, confirm the app is actually
Before modifying firewall rules, verify the service is actually running and listening:
Disable temporarily:
# Linux / macOS sudo netstat -tulpn | grep LISTEN # or ss -tuln
sudo pfctl -s rules
netsh advfirewall set allprofiles state off
Here are some common firewall settings to check: Find your app (e