Method and device for achieving abnormality processing, and a request terminal

The invention discloses a method and device for achieving the abnormality processing, and the method comprises the step: carrying out the corresponding abnormality processing of each determined illegal message. The method is used for the abnormality processing of illegal messages, thereby solving problems caused by only discarding processing. Furthermore, an abnormal replay message is transmitted, so the corresponding messages can be processed correspondingly, thereby improving the performance of an industrial automatic network. A transmission control protocol_reset connection message (TCP_RST) is transmitted, thereby avoiding the network resource waste caused by repeated transmission. 本发明公开了种实现异常处理的方法及装置，包括：对各确定的非法报文分别进行相应的异常处理。本发明方法通过对非法报文进行异常处理，避免了仅进行丢弃处理而产生的问题；进步的，进行发送异常回复信息，可以对相应的报文进行相关处理，提高了工业自动化网络的性能；发送传输控制协议_重置连接(TCP_RST)报，避免了重复发送造成的网络资源浪费。