Patent ID: 11943250
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 8:
9. A method for testing, the method comprising:
transmitting, by a transmitter, a test packet that increases processing load to a device protected by a security system, the security system performing authentication of a packet transmitted to a to-be-protected device and a packet limit per source IP address;
generating, by a test scenario generator a test session according to a scenario when transmitting the test packet;
configuring, by an address distributor a packet so that the test packet uses a plurality of source IP addresses;
responding, by a responder to response requests up to a predetermined stage of authentication among a plurality of stages of authentication performed by the security system so that the security system authenticates the test packet to be valid;
monitoring, by a surveillance monitor, at the predetermined stage, a packet filtering situation and processing load of the security system to which the test packet is transmitted;
wherein the surveillance monitor monitors the packet filtering situation based at least on the number of test packets, the byte amount, and the number of sessions per unit of time per source IP address, and whether there is a response packet from a to-be-tested device; and
wherein the surveillance monitoring identifies the source IP address that comes to receive no response packet although other source IP address test packets receive a response packet and sets to record the source IP address that comes to receive no response packet, the number of test packets, the byte amount, the number of sessions, and a time stamp that are transmitted.