UDP: Short Packets: and UDP bad checksum: entries in dmesg
have been closing down network access and fighting off DOS attacks. just did a dmesg and got many of these entries:
UDP: short packet: a.b.c.d:4660 3328/13 to e.f.g.h:53
(more lines of above) then
NET: 18 messages suppressed.
UDP: bad checksum. From a.b.c.d:17383 to e.f.g.h:33435 ulen 8
(lots of these)
we've had lots of dns-related unwanted dos traffic so nervous about the destination port of 53.
have searched and searched, and apart from possible problem with eth nic (?!) have found no answers. does anyone know where i should start looking or if these entries are something to be concerned about?