Network Intrusion Detection Method Based on PCA and Bayes Algorithm

Table 1

The basic characteristics of TCP connection.

Features	Descriptions
duration	The connection duration
protocol_type	Protocol types, including TCP, UDP, ICMP
service	The type of network service for the target host
flag	A state that connects normal or wrong
src_bytes	The number of bytes from the source host to the target host
dst_bytes	The number of bytes from the target host to the source host
land	Whether the connection is from the same host or port
wrong_fragment	The number of erroneous segments
urgent	The number of emergency packages