Linux system server error message explanation

We often get error messages during the process of using linux system, but generally we don't know why it appears when we see these error messages. The reason and solution are not known. So today I will sort out some explanations of the wrong information.

◆General class hints eth1:Toomuch

workatinterrupt,IntrStatus=0x0001

The meaning of this hint is that there are too many interrupt requests for a network card. Can be ignored once. But if this prompt appears frequently or intensively, there are more possibilities that may need to be dealt with. More possibilities, such as network card performance; server performance; network attacks.. and so on.

◆General class hints

IPVS:incomingICMP:failedchecksumfrom61.172.0.X!

The server received a checksum error ICMP packet. Such data packets may be illegally generated garbage data. However, from the current point of view, the server receives such data and it is generally ignored.

A typical proxy server will forward thousands of packets per second while it is working. Receiving several error packets will not affect normal work. This is the most common type of prompt.

◆General class hints

NET:Nmessagessuppressed.

The server ignores N packets. It is similar to the previous one. The packets received by the server are considered to be useless garbage data. This type of data is mostly generated by programs of the attack class.

This hint can be ignored if N is small. However, if such prompts of more than 3 bits of data appear frequently or for a long time, it is very likely that the server is attacked by the bandwidth of the garbage data class.

◆General class hints

UDP:badchecksum.From221.200.XX:50279to218.62.XX:1155ulen24

UDP:shortpacket:218.2.XX:30723640/217to222.168.XX:57596

218.26.131.XsentaninvalidICMPtype3, code13errortoabroadcast:0.1.0.4oneth0

The server received an error packet, which is a UDP checksum error; too short UDP packet; a wrong ICMP type data. Such information is also generally illegal. But the general problem is not directly ignored.

◆General class hints

kernel:conntrack_ftp:partial2272205426703+13

FTP_NAT:partialpacket2635716056/20in2635716048/2635716075

The server is maintaining an FTP protocol An error occurred while connecting. Such prompts can generally be ignored directly. Serious network communication problems!