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

Detect time	2025-05-13 11:23:14
Detect client IP	10.152.1.160 (x-forward-for : 18.191.209.202 )
Detect URL	http://xn--zj4b17ik3ipke.it-bank.kr/data/course/20005_main_thumbnail_pc