firewall at ubuntu server

ufw – uncomplicated firewall

https://help.ubuntu.com/11.04/serverguide/C/firewall.html

ufw를 이용한 firewall 서비스
간단하게 설명하면
1. 설치하고

2. enable시키고

sudo ufw enable

3. 사용하는 포트만 열어주면 끄읕.

sudo ufw allow 394875

포트를 열어놔도 포트스캔에 걸리질 않는다. 짱이다.

참고 페이지들
https://help.ubuntu.com/community/UFW

https://help.ubuntu.com/community/Gufw

http://manpages.ubuntu.com/manpages/natty/en/man8/ufw.8.html

http://www.auditmypc.com/port-scanning.asp

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