The request / response that are contrary to the Web firewall security policies have been blocked.

Detect time	2025-05-14 04:12:54
Detect client IP	10.152.1.112 (x-forward-for : 18.219.224.246 )
Detect URL	http://itbank.xn--kg-j96is77cveb.kr/data/course/21_main_thumbnail_pc