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SubjectUDP attack? How to suppress kernel msgs?
Date
Hi,

One of my servers running 2.4.1 was attacked earlier today. I have a strong
feeling it went down because the kernel was logging too many messages to
syslog. There's over 100,000 lines of the following in my syslog:

Feb 23 12:28:25 omega kernel: UDP: bad checksum. From 202.96.140.146:20567
to 21
6.115.239.40:113 ulen 1472
Feb 23 12:28:25 omega kernel: UDP: bad checksum. From 209.249.213.145:36338
to 2
16.115.239.40:113 ulen 1472
Feb 23 12:28:25 omega kernel: UDP: bad checksum. From 194.225.45.233:33762
to 21
6.115.239.40:113 ulen 1472
Feb 23 12:28:25 omega kernel: UDP: bad checksum. From 211.54.39.161:14958 to
216
.115.239.40:113 ulen 1472
Feb 23 12:28:25 omega kernel: UDP: bad checksum. From 202.96.140.167:3467 to
216
.115.239.40:113 ulen 1472

How do I suppress these types of messages from hogging up all the CPU?

Thanks,
Vibol Hou

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