SSL 버전 확인, nmap nse script 이용

http://nmap.org/nsedoc/scripts/sslv2.html

http://nmap.org/nsedoc/scripts/ssl-cert.html

http://eileensoft.blog.me/50175059329

http://kais.tistory.com/entry/%EB%B3%B4%EC%95%88%EC%A0%95%EB%B3%B4-SSL-20-%EB%B3%B4%EC%95%88%EC%B7%A8%EC%95%BD%EC%A0%90