Hi Juan,from the log, looks like the UDP flood protection is enabled.is it ?Wei

Hi Juan,when the issue happens could you check if Server Status is online or offlinefrom the Security Services Dashboard ? We have an issue fixed in later releasethat sometimes the security services goes offline under heavy traffic. the workaround is...

Hi Juan,Does it work ?thanksWei

Hi Juan,Could you please disable the UDP flood protection to see if that'sthe feature causing the issue ? it is under Firewall->Attack Protection.Wei

Hi Joe,this is fixed in the later release (engineer builds). Credential will not be checked ifWAN connection is down.thanks,Wei