\n7.1. \ubc29\ud654\ubcbd\uc758 \uc911\uc694\uc131<\/h2>\n
\ubc29\ud654\ubcbd(Firewall)\uc740 \uc11c\ubc84\uc758 \ubcf4\uc548\uc744 \uc720\uc9c0\ud558\uace0 \uc678\ubd80\uc758 \uc545\uc131 \uacf5\uaca9\uc73c\ub85c\ubd80\ud130 \ubcf4\ud638\ud558\uae30 \uc704\ud574 \ub124\ud2b8\uc6cc\ud06c \ud2b8\ub798\ud53d\uc744 \uc81c\uc5b4\ud558\ub294 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \ub610\ub294 \ud558\ub4dc\uc6e8\uc5b4\uc785\ub2c8\ub2e4. \ubc29\ud654\ubcbd\uc740 \ud2b9\uc815 \ud3ec\ud2b8\uc640 \uc8fc\uc18c\uc5d0 \ub300\ud55c \uc811\uadfc\uc744 \ucc28\ub2e8\ud558\uac70\ub098 \ud5c8\uc6a9\ud568\uc73c\ub85c\uc368 \uc11c\ubc84\uc5d0 \ub300\ud55c \ubb34\ub2e8 \uc811\uadfc\uc774\ub098 \uacf5\uaca9\uc744 \uc608\ubc29\ud569\ub2c8\ub2e4. \ud2b9\ud788, \uc778\ud130\ub137\uacfc \uc5f0\uacb0\ub41c \uc11c\ubc84\uc77c\uc218\ub85d \uac15\ub825\ud55c \ubcf4\uc548\uc758 \ud544\uc694\uc131\uc774 \uc99d\uac00\ud569\ub2c8\ub2e4.<\/p>\n
\uc6b0\ubd84\ud22c \uc11c\ubc84\ub294 \uc804\uc138\uacc4\uc5d0\uc11c \uc218\ub9ce\uc740 \uacf5\uaca9\uc758 \ub300\uc0c1\uc774 \ub418\ubbc0\ub85c, \ubc29\ud654\ubcbd\uc744 \uc801\uc808\ud788 \uc124\uc815\ud558\ub294 \uac83\uc740 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uc545\uc131 \ud2b8\ub798\ud53d\uc744 \ucc28\ub2e8\ud558\uace0, \uc11c\ube44\uc2a4\uc758 \uac00\uc6a9\uc131\uc744 \ub192\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n\n7.2. UFW(Uncomplicated Firewall) \uc18c\uac1c<\/h2>\n
UFW\ub294 \uc6b0\ubd84\ud22c\ub97c \uc704\ud55c \uac04\ub2e8\ud55c \ubc29\ud654\ubcbd \ub3c4\uad6c\ub85c, \uc0ac\uc6a9\ud558\uae30 \uc26c\uc6b4 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc81c\uacf5\ud558\uc5ec \ubc29\ud654\ubcbd \uaddc\uce59\uc744 \uc27d\uace0 \ube60\ub974\uac8c \uc124\uc815\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\uc2b5\ub2c8\ub2e4. \ubcf5\uc7a1\ud55c iptables\uc5d0 \ub300\ud55c \ucd94\uc0c1\ud654\ub41c \uc0ac\uc6a9\ubc95\uc744 \uc81c\uacf5\ud558\uc5ec \ucd08\ubcf4\uc790\ub3c4 \uc27d\uac8c \ubc29\ud654\ubcbd\uc744 \uad00\ub9ac\ud560 \uc218 \uc788\ub3c4\ub85d \ub3d5\uc2b5\ub2c8\ub2e4.<\/p>\n
UFW\uc758 \uc8fc\uc694 \uae30\ub2a5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
\n- \uac04\ub2e8\ud55c \uba85\ub839\uc5b4\ub85c \ubc29\ud654\ubcbd \uaddc\uce59 \uc124\uc815 \ubc0f \uad00\ub9ac<\/li>\n
- \uae30\ubcf8\uc801\uc73c\ub85c \ubaa8\ub4e0 \uc218\uc2e0 \ud2b8\ub798\ud53d\uc744 \ucc28\ub2e8\ud558\uace0, \ud544\uc694\ud55c \ud2b8\ub798\ud53d\ub9cc \ud5c8\uc6a9<\/li>\n
- IPv4 \ubc0f IPv6 \uc9c0\uc6d0<\/li>\n
- \uc0c1\ud0dc \ud655\uc778 \uae30\ub2a5\uc744 \ud1b5\ud55c \ud604\uc7ac \ubc29\ud654\ubcbd \uc0c1\ud0dc \uc9c4\ub2e8<\/li>\n<\/ul>\n<\/section>\n\n
7.3. UFW \uc124\uce58 \ubc0f \uae30\ubcf8 \uc0ac\uc6a9\ubc95<\/h2>\n
\uc6b0\ubd84\ud22c\ub294 \uae30\ubcf8\uc801\uc73c\ub85c UFW\uac00 \uc124\uce58\ub418\uc5b4 \uc788\uc9c0\ub9cc, \ud655\uc778 \ud6c4 \ud544\uc694\ud55c \uacbd\uc6b0 \ub2e4\uc74c \uba85\ub839\uc5b4\ub85c \uc124\uce58\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
sudo apt update\nsudo apt install ufw<\/code><\/pre>\n\uc124\uce58 \ud6c4, UFW\uc758 \uae30\ubcf8 \uc0c1\ud0dc\ub97c \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
sudo ufw status<\/code><\/pre>\n\uae30\ubcf8\uc801\uc73c\ub85c UFW\ub294 \ube44\ud65c\uc131 \uc0c1\ud0dc\uc785\ub2c8\ub2e4. UFW\ub97c \ud65c\uc131\ud654\ud558\uae30 \uc704\ud574 \ub2e4\uc74c \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n
sudo ufw enable<\/code><\/pre>\n<\/section>\n\n7.4. \uae30\ubcf8 \ubc29\ud654\ubcbd \uaddc\uce59 \uc124\uc815<\/h2>\n
UFW\ub85c \uc11c\ubc84\uc758 \ubc29\ud654\ubcbd \uaddc\uce59\uc744 \uc124\uc815\ud558\uae30 \uc704\ud574 \uba87 \uac00\uc9c0 \uae30\ubcf8 \uaddc\uce59\uc744 \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
7.4.1. SSH \ud3ec\ud2b8 \uc5f4\uae30<\/h3>\n
\uc11c\ubc84\uc5d0 SSH\ub85c \uc6d0\uaca9 \uc811\uc18d\uc744 \ud558\uae30 \uc704\ud574\uc11c\ub294 SSH \ud3ec\ud2b8(\uae30\ubcf8\uc801\uc73c\ub85c 22\ubc88)\ub97c \uc5f4\uc5b4\uc57c \ud569\ub2c8\ub2e4. \ub2e4\uc74c \uba85\ub839\uc5b4\ub85c \ud3ec\ud2b8\ub97c \ud5c8\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
sudo ufw allow 22<\/code><\/pre>\n\ub610\ub294 SSH\uc5d0 \ub300\ud55c \uace0\uae09 \ubcf4\uc548\uc744 \uc704\ud574 \ub2e4\ub978 \ud3ec\ud2b8 \ubc88\ud638\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, 2222\ubc88 \ud3ec\ud2b8\ub97c \uc0ac\uc6a9\ud560 \uacbd\uc6b0:<\/p>\n
sudo ufw allow 2222\/tcp<\/code><\/pre>\n7.4.2. HTTP \ubc0f HTTPS \ud3ec\ud2b8 \uc5f4\uae30<\/h3>\n
\uc6f9 \uc11c\ubc84\ub97c \uc6b4\uc601\ud558\ub294 \uacbd\uc6b0 80\ubc88(HTTP)\uacfc 443\ubc88(HTTPS) \ud3ec\ud2b8\ub97c \uc5f4\uc5b4\uc57c \ud569\ub2c8\ub2e4. \ub2e4\uc74c \uba85\ub839\uc5b4\ub85c \ud3ec\ud2b8\ub97c \uc5f4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
sudo ufw allow http\nsudo ufw allow https<\/code><\/pre>\n\uc774 \uba85\ub839\uc740 \uac01\uac01 80\ubc88 \ubc0f 443\ubc88 \ud3ec\ud2b8\ub97c \ud5c8\uc6a9\ud558\ub294 \uc124\uc815\uc785\ub2c8\ub2e4.<\/p>\n
7.4.3. \ud2b9\uc815 IP\ub9cc \ud5c8\uc6a9\ud558\uae30<\/h3>\n
\ud2b9\uc815 IP \uc8fc\uc18c\uc5d0\uc11c\ub9cc \uc811\uadfc\uc744 \ud5c8\uc6a9\ud558\ub824\uba74 \uc544\ub798\uc640 \uac19\uc774 \uc124\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
sudo ufw allow from 192.168.1.100 to any port 22<\/code><\/pre>\n\uc774\ub294 192.168.1.100 IP \uc8fc\uc18c\uc5d0\uc11c \uc624\ub294 SSH \uc811\uadfc\uc744 \ud5c8\uc6a9\ud558\ub294 \uaddc\uce59\uc785\ub2c8\ub2e4.<\/p>\n<\/section>\n\n7.5. \ubc29\ud654\ubcbd \uaddc\uce59 \ud655\uc778 \ubc0f \uc0ad\uc81c<\/h2>\n
\ud604\uc7ac \uc124\uc815\ub41c \ubc29\ud654\ubcbd \uaddc\uce59\uc744 \ud655\uc778\ud558\ub824\uba74 \ub2e4\uc74c \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n
sudo ufw status verbose<\/code><\/pre>\n\ud2b9\uc815 \uaddc\uce59\uc744 \uc0ad\uc81c\ud558\uace0 \uc2f6\ub2e4\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
sudo ufw delete allow 22<\/code><\/pre>\n\uc774 \uba85\ub839\uc740 SSH \ud3ec\ud2b8\ub97c \ud5c8\uc6a9\ud558\ub294 \uaddc\uce59\uc744 \uc0ad\uc81c\ud569\ub2c8\ub2e4.<\/p>\n<\/section>\n\n7.6. UFW \uace0\uae09 \uc124\uc815<\/h2>\n
UFW\ub294 \uac04\ub2e8\ud55c \uc124\uc815 \uc678\uc5d0\ub3c4 \uba87 \uac00\uc9c0 \uace0\uae09 \uae30\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc8fc\uc694 \ub0b4\uc6a9\uc744 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
7.6.1. \uc815\uaddc \ud45c\ud604\uc2dd\uc744 \uc774\uc6a9\ud55c \uaddc\uce59 \uc124\uc815<\/h3>\n
UFW\ub294 \uc815\uaddc \ud45c\ud604\uc2dd\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc5b4 \ubcf4\ub2e4 \uc720\uc5f0\ud55c \uaddc\uce59 \uc124\uc815\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ud2b9\uc815 \uc11c\ube0c\ub137\uc744 \ud5c8\uc6a9\ud558\uac70\ub098 \ucc28\ub2e8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
sudo ufw allow from 192.168.1.0\/24<\/code><\/pre>\n\uc774\ub294 192.168.1.0\/24 \ub124\ud2b8\uc6cc\ud06c \ub300\uc5ed\uc758 \ubaa8\ub4e0 \ud2b8\ub798\ud53d\uc744 \ud5c8\uc6a9\ud558\ub294 \uc124\uc815\uc785\ub2c8\ub2e4.<\/p>\n
7.6.2. \ub85c\uadf8 \ud65c\uc131\ud654<\/h3>\n
UFW\ub294 \ub85c\uadf8 \uae30\ub2a5\uc744 \uc9c0\uc6d0\ud558\uc5ec \ubc29\ud654\ubcbd\uc744 \ud1b5\uacfc\ud55c \ud2b8\ub798\ud53d\uacfc \ucc28\ub2e8\ub41c \ud2b8\ub798\ud53d\uc744 \uae30\ub85d\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub85c\uadf8\ub97c \ud65c\uc131\ud654\ud558\ub824\uba74 \ub2e4\uc74c \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n
sudo ufw logging on<\/code><\/pre>\n\ub85c\uadf8 \ub808\ubca8\uc744 \uc870\uc815\ud560 \uc218\ub3c4 \uc788\uc73c\uba70, \uc6b0\uc120\uc21c\uc704\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4: off, low, medium, high, full. \uc608\ub97c \ub4e4\uc5b4, medium \ub85c\uadf8 \ub808\ubca8\uc744 \uc124\uc815\ud558\ub824\uba74:<\/p>\n
sudo ufw logging medium<\/code><\/pre>\n<\/section>\n\n7.7. \ubc29\ud654\ubcbd \uc124\uc815 \ud14c\uc2a4\ud2b8<\/h2>\n
\ubc29\ud654\ubcbd \uc124\uc815\uc774 \uc62c\ubc14\ub974\uac8c \uc791\ub3d9\ud558\ub294\uc9c0\ub97c \ud655\uc778\ud558\uae30 \uc704\ud574\uc11c\ub294 \uc2e4\uc81c\ub85c \uaddc\uce59\uc744 \ud14c\uc2a4\ud2b8\ud574\uc57c \ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, SSH \ud3ec\ud2b8\ub97c \uc7a0\uc2dc \ucc28\ub2e8\ud55c \ud6c4, \ub2e4\ub978 \ucef4\ud4e8\ud130\uc5d0\uc11c SSH \uc811\uc18d\uc744 \uc2dc\ub3c4\ud558\uc5ec \ucc28\ub2e8\ub418\ub294\uc9c0 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
sudo ufw deny 22<\/code><\/pre>\n\uc774\ud6c4 \ucc28\ub2e8\ub41c \uc0c1\ud0dc\uc5d0\uc11c SSH\ub85c \ub2e4\uc2dc \uc811\uc18d \uc2dc\ub3c4\ub97c \ud558\uba74 \uc5f0\uacb0\uc774 \ub418\uc9c0 \uc54a\uc544\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<\/section>\n\n7.8. \ub9c8\ubb34\ub9ac<\/h2>\n
\uc6b0\ubd84\ud22c \uc11c\ubc84\uc5d0\uc11c UFW\ub97c \ud65c\uc6a9\ud55c \ubc29\ud654\ubcbd \uc124\uc815\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \uc11c\ubc84 \ubcf4\uc548\uc740 \ub2e8\uc9c0 \ubc29\ud654\ubcbd \uc124\uc815\uc5d0 \uadf8\uce58\uc9c0 \uc54a\uc73c\uba70, \uc2dc\uc2a4\ud15c \uc5c5\ub370\uc774\ud2b8, \ud328\uc2a4\uc6cc\ub4dc \uad00\ub9ac, \uc0ac\uc6a9\uc790 \uad8c\ud55c \uc124\uc815 \ub4f1 \ub2e4\uac01\uc801\uc778 \uc694\uc18c\ub97c \ud3ec\ud568\ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc, UFW\ub97c \uc0ac\uc6a9\ud568\uc73c\ub85c\uc368 \uae30\ubcf8\uc801\uc778 \ud2b8\ub798\ud53d \uc81c\uc5b4\ub97c \ud1b5\ud574 \ubcf4\uc548 \uc218\uc900\uc744 \ud55c\uce35 \ub0ae\ucd9c \uc218 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\n
\uc11c\ubc84\uc758 \ubcf4\uc548\uc740 \uc0ac\uc804 \uc608\ubc29\uc774 \uac00\uc7a5 \uc911\uc694\ud569\ub2c8\ub2e4. \ub2e4\uac01\uc801\uc778 \ubcf4\uc548 \ub300\ucc45\uc744 \uc218\ud589\ud558\uace0 \uc8fc\uae30\uc801\uc73c\ub85c \ubcf4\uc548 \uc0c1\ud0dc\ub97c \uc810\uac80\ud574\uc57c \ud569\ub2c8\ub2e4. UFW\ub294 \uadf8 \uc2dc\uc791\uc810\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\uba70, \ub098\uc544\uac00 \uc138\ubc00\ud55c \ubcf4\uc548 \uc194\ub8e8\uc158\uc758 \uc77c\ud658\uc73c\ub85c \uc790\ub9ac\uc7a1\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n<\/article>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"
\uc6b0\ubd84\ud22c \uc11c\ubc84\uc758 \ubcf4\uc548\uc740 \uc11c\ubc84\ub97c \uc548\uc804\ud558\uac8c \uc6b4\uc601\ud558\uae30 \uc704\ud574 \ub9e4\uc6b0 \uc911\uc694\ud55c \uc694\uc18c\uc785\ub2c8\ub2e4. \ubcf8 \uae00\uc5d0\uc11c\ub294 UFW(Uncomplicated Firewall)\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc6b0\ubd84\ud22c \uc11c\ubc84\uc758 \uae30\ubcf8 \ubc29\ud654\ubcbd \uc124\uc815\uc744 \ub2e4\ub8e8\uace0, \ub2e4\uc591\ud55c \ubcf4\uc548 \uc124\uc815 \ubc29\ubc95\uc5d0 \ub300\ud574\uc11c\ub3c4 \uc124\uba85\ud560 \uac83\uc785\ub2c8\ub2e4. 7.1. \ubc29\ud654\ubcbd\uc758 \uc911\uc694\uc131 \ubc29\ud654\ubcbd(Firewall)\uc740 \uc11c\ubc84\uc758 \ubcf4\uc548\uc744 \uc720\uc9c0\ud558\uace0 \uc678\ubd80\uc758 \uc545\uc131 \uacf5\uaca9\uc73c\ub85c\ubd80\ud130 \ubcf4\ud638\ud558\uae30 \uc704\ud574 \ub124\ud2b8\uc6cc\ud06c \ud2b8\ub798\ud53d\uc744 \uc81c\uc5b4\ud558\ub294 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \ub610\ub294 \ud558\ub4dc\uc6e8\uc5b4\uc785\ub2c8\ub2e4. \ubc29\ud654\ubcbd\uc740 \ud2b9\uc815 \ud3ec\ud2b8\uc640 \uc8fc\uc18c\uc5d0 \ub300\ud55c \uc811\uadfc\uc744 \ucc28\ub2e8\ud558\uac70\ub098 \ud5c8\uc6a9\ud568\uc73c\ub85c\uc368 \uc11c\ubc84\uc5d0 … \ub354 \ubcf4\uae30 “7.\ubcf4\uc548 \uc124\uc815 \ubc0f \ubc29\ud654\ubcbd \uad00\ub9ac, UFW(Uncomplicated Firewall)\ub97c \uc774\uc6a9\ud55c \uae30\ubcf8 \ubc29\ud654\ubcbd \uc124\uc815”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[179],"tags":[],"class_list":["post-41656","post","type-post","status-publish","format-standard","hentry","category-179"],"yoast_head":"\n7.\ubcf4\uc548 \uc124\uc815 \ubc0f \ubc29\ud654\ubcbd \uad00\ub9ac, UFW(Uncomplicated Firewall)\ub97c \uc774\uc6a9\ud55c \uae30\ubcf8 \ubc29\ud654\ubcbd \uc124\uc815 - 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