Hanwha Techwin Co., Ltd.

Lg Energy Solution, Ltd.

Young Hun Hong

Eun Soo Choi

Jin Ook Hur

Su Ho Jeon

Nam Hyuck Kim

Youngduk Kim

Gyu Tae Lee

Jeong Sik Yun

Gun Soo Kim

Gyeong Yun Jo

Jaekyeong Kim

Provided is a network security system including a communication interface that transmits a request for a preset option field value to a Dynamic Host Configuration Protocol (DHCP) server, receives a preset option field value corresponding to the request for the preset option field value from the DHCP server, transmits a request for a preset file to a Trivial File Transfer Protocol (TFTP) server, and receives a preset file corresponding to the request for the preset file from the TFTP server, and a processor that designates a preset location and the preset file of the TFTP server based on the preset option field value, wherein the preset file includes a file different from a file specified in the preset option field value by the DHCP.

Network security system and method for operating same

A method of decrypting a streaming image includes: receiving a packet including at least an item which is encrypted, the item including at least one parameter used for decoding image data included in the streaming image; decrypting the item; and decoding the image data included in the streaming image based on the decrypted item, wherein the image data is not encrypted.

Streaming image encryption method and computer program, streaming image decryption method and computer program

Growing community of inventors

Seongnam-si, South Korea

Young Hun Hong