Inbound Traffic Blocked, Check Firewall Settings Verified May 2026

sudo ufw status verbose If inactive, enable it with sudo ufw enable . If active, check for rules like Deny from any or missing Allow rules for your port.

Temporarily disable the firewall to confirm the issue (do not do this in production). inbound traffic blocked, check firewall settings

Chain INPUT (policy DROP)

# Test TCP port nc -zv <target-ip> <port> telnet <target-ip> <port> Test with curl (HTTP) curl -v http://<target-ip>:<port> sudo ufw status verbose If inactive, enable it

sudo pfctl -s rules Disable temporarily: sudo ufw status verbose If inactive

sudo firewall-cmd --list-all Check the services and ports sections. If your port is missing, inbound traffic is blocked.