This message will be generated when over 300 packets per second are received by the SNMP service.
If you want to change this behaviour, there are 2 configurable fields in the [SNMP] section of uLinux.conf:
The default value of EnableDetectDDoS is TRUE.
The default value of MaxPacketPerSecond is 300.
If you want to disable the DoS detection, then run the below command:
# setcfg SNMP EnableDetectDDoS FALSE
If you want to increase the maximum number of packets, then run the below command (XXX is the maximum packets per second):
# setcfg SNMP MaxPacketPerSecond XXX
Remember to restart SNMP after changing these settings.
# /etc/init.d/snmp restart