08/31/2023 208 People found this article helpful 459,618 Views
UDP and ICMP Flood Attacks are a type of denial-of-service (DoS) attack.They are initiated by sending a large number of UDP or ICMP packets to a remote host.
As a result, the victimized system’s resources will be consumed with handling the attacking packets, which eventually causes the system to be unreachable by other clients.
The image below shows an example of UDP flood protection packet dropped:
Below shows a Possible UDP flood attack detected message:
This release includes significant user interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. The below resolution is for customers using SonicOS 7.X firmware.
The same Logic can be applied for the ICMP flood protection:
This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.
If the traffic detected is legitimate or a false positive, as part of a troubleshooting process or solution of the issue it’s possible to disable the UDP flood protection as shown below: