The invention relates to the technical field of function chain construction, in particular to a
system and a method for constructing a
virtual network security function chain, which comprises the following steps of: virtualizing various security functions, deploying the security functions in a network in a virtualized form, constructing a virtual
security function chain, identifying security threats and generating a corresponding security event report. When a security
threat is identified, a response is quickly made and corresponding protection measures are taken, so that
data transmission and instruction communication among the
virtualization security functions are realized, tasks of the security functions are dynamically allocated,
resource utilization is optimized,
system performance bottlenecks and potential faults are detected, and maintenance and optimization are carried out. According to the invention, each
virtualization security function cooperatively works through an effective
communication interface and a task scheduling mechanism, and it is ensured that the
system can quickly respond and take corresponding protection measures when identifying security threats, such as blocking malicious traffic and isolating infected nodes.