Ubuntu \ub294 \uc55e\uc5d0 sudo \uc785\ub825<\/p>\n
\uc124\uce58:\u00a0 apt-get -y install ufw
\n\ud65c\uc131\ud654 :\u00a0 ufw enable
\n\ube44\ud65c\uc131\ud654: ufw disable
\n\uc804\ubd80\ub9c9\uc74c: ufw default deny
\n\uc804\ubd80\ud5c8\uc6a9: ufw default allow<\/p>\n
\uc11c\ube44\uc2a4\uc774\ub984\uc73c\ub85c \ud5c8\uc6a9 :\u00a0 ufw allow http<\/p>\n
sudo ufw allow ssh
\nsudo ufw allow http
\nsudo ufw allow ftp
\nsudo ufw allow mysql
\n\ub9c9\uc74c :ufw deny http
\n\ud3ec\ud2b8\ud5c8\uc6a9 :ufw allow 80
\n\ub9c9\uc74c :ufw deny 80<\/p>\n
\ud3ec\ud2b8\/\ud504\ub85c\ud1a0\ucf5c\ub85c \ub9c9\uc74c\u00a0 : ufw deny 80\/tcp
\n\ud5c8\uc6a9 : ufw allow 80\/allow
\n\ud2b9\uc815IP(port) \ud5c8\uc6a9 :sudo ufw allow from 111.111.111.111 to any port 21
\n\ud2b9\uc815IP(port) \ub9c9\uc74c :sudo ufw deny from 111.111.111.111 to any port 21<\/p>\n
IP \uc601\uc5ed\ub300 \uc804\ubd80 \ub9c9\uae30<\/p>\n
.IP \ucc28\ub2e8 \ubc29\ubc95\r\n1. \/etc\/ufw\/before.rules(# End required lines \uc801\ud78c \uc904 \ub2e4\uc74c\uc5d0 \ucc28\ub2e8\ud560 IP\ub97c \uc785\ub825\ud55c\ub2e4.)\r\n-A ufw-before-input -s xxx.xxx.xxx.xxx -j DROP\r\n<\/pre>\n\ucc38\uc870 : https:\/\/www.cyberciti.biz\/faq\/how-to-block-an-ip-address-with-ufw-on-ubuntu-linux-server\/<\/p>\n
sudo vi \/etc\/ufw\/before.rules\r\n\r\n# Block spammers \r\n-A ufw-before-input -s 178.137.80.191 -j DROP\r\n# Block ip\/net (subnet) \r\n-A ufw-before-input -s 202.54.1.0\/24 -j DROP\r\n\r\n$ sudo ufw reload<\/pre>\n\uc5d0\ub7ec\uc2dc : Firewall not enabled (skipping reload<\/p>\n
root@auction:~$ sudo ufw disable\r\nFirewall stopped and disabled on system startup\r\n\r\nroot@auction:~$ sudo ufw status verbose\r\nStatus: inactive\r\n\r\nroot@auction:~$ sudo ufw enable\r\nCommand may disrupt existing ssh connection. Proceed with operation (y|n)? y\r\n\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"