INTRUSION PROTECTION DEVICE AND INTRUSION PROTECTION METHOD FOR POINT-TO-POINT TUNNELING PROTOCOL

摘要

The present invention relates to a method for monitoring and blocking an abnormal traffic of a point-to-point tunneling packet data, comprising restoring a tunneling packet data to an IP packet data, judging whether the IP packet data is a normal or abnormal traffic, discarding the tunneling packet data when the IP packet data is judged to be an abnormal traffic and transmitting the tunneling packet data to another network node when the IP packet data is judged to be a normal traffic.