Warning: This change will be reverted after reboot.
1. Login via SSH in the local network. The username is pi and the password can be found in "Advanced" -> "Configuration" -> "SSH Console"
2. Run the following command:
sudo iptables -A FW_INPUT_DROP -i $(frcc | jq -r '.routing.global.default.viaIntf') -p icmp -j FW_DROP