Firewall issues

This section shows issues regarding the Proxmox firewall feature.

Issue – Rules are created and a firewall is enabled for vNIC, but rules do not get applied

Solution: On rare occasions, owing to changes in the network interface, or other reasons, the firewall service may get stuck. In such cases, we can restart the service using the following command:

# service pve-firewall restart

If the previous command does not help, then check the syslog of the node to see if there are any clues. If nothing helps, then a reboot will clear any firewall issues. As with Proxmox VE 4.1, if a firewall becomes inactive, it does not fall back on a predefined set of protection. A firewall simply becomes nonexistent.

Issue – A firewall is enabled for a VM and the necessary rules are created, but nothing is being filtered for that VM. All other VM firewall rules in the same node work properly

Solution: This issue may occur when the firewall is not enabled in the virtual network interface...