Hi all !!! Most of case they can find a bind version on DNS server with this command. " dig @IP address txt chaos version.bind. | grep VERSION" But I want to hide bind version because of security problem. How can I do to hide my bind version? Thank you!!! ========================== 데이콤 인터넷 추진본부 보라넷 운용팀 이희복 TEL : +82 2 2220-7419 FAX : +82 2 2220-7429