Network Security Situation Assessment Model Based on Extended Hidden Markov

Table 4

Severity levels based on syslog.

Severity level	Log description
0	Urgency: system is not available
1	Alert: must take measures right now
2	Important: important condition
3	Error: error condition
4	Warning: warn condition
5	Attention: normal with landmark condition
6	Information: information message
7	Debug: debug message