Due to a problem in the ICMP Stack of iptables please disable ICMP on your firewall as follows:
disable Packet Filter -> ICMP -> ICMP on Firewall (red light)
Stay tuned for a Up2Date Announcement that will fix this problem.
You Can Learn More About the Astaro Internet Security Product Line By Going to www.FirewallShop.com/Astaro.
The original article/video can be found at Important Security Advisory