IT'SALLABOUTMYSELF

https://blog.naver.com/isaac7263/221357099806

http://blog.syszone.co.kr/category/24

https://blogs.msdn.microsoft.com/oldnewthing/20040318-00/?p=40193

http://www.dummies.com/programming/networking/network-administration-the-nbtstat-command/

http://cleverdj.tistory.com/133

https://m.blog.naver.com/PostView.nhn?blogId=assa_gauri&logNo=70133176095&proxyReferer=http%3A%2F%2Fwww.google.co.kr%2Furl%3Fsa%3Dt%26rct%3Dj%26q%3D%26esrc%3Ds%26source%3Dweb%26cd%3D3%26ved%3D0ahUKEwjCmbGZ2_HXAhVGiLwKHQRaCc0QFggyMAI%26url%3Dhttp%253A%252F%252Fm.blog.naver.com%252Fassa_gauri%252F70133176095%26usg%3DAOvVaw3HJkvHg2cEkXDyaLa9vPd-

https://en.wikipedia.org/wiki/Bottle_(web_framework)

http://www.postfix.org/documentation.html https://easyengine.io/tutorials/mail/postfix-queue/ https://wiki.centos.org/HowTos/postfix_restrictions Postfix 실행제한 https://www.reddit.com/r/postfix/comments/6fk9mj/restrict_access_to_the_mail_queue_use_of_the/

http://rich-notes.blogspot.kr/2014/09/disable-vrfy-for-postfix-retina-id-146.html https://linux-audit.com/postfix-hardening-guide-for-security-and-privacy/ https://lists.samba.org/archive/linux/2002-October/004814.html

[root@myserver: /etc/xinetd.d]$ nc -z localhost 1-10000