{"id":519,"date":"2012-05-04T16:01:29","date_gmt":"2012-05-04T16:01:29","guid":{"rendered":"http:\/\/apollo89.com\/wordpress\/?p=519"},"modified":"2013-01-27T19:12:35","modified_gmt":"2013-01-27T10:12:35","slug":"%ea%b0%80%ec%83%81-%ec%82%ac%ec%84%a4%eb%a7%9dvpn","status":"publish","type":"post","link":"https:\/\/apollo89.com\/wordpress\/?p=519","title":{"rendered":"\uac00\uc0c1 \uc0ac\uc124\ub9dd(VPN)"},"content":{"rendered":"

 <\/p>\n

\uac00\uc0c1 \uc0ac\uc124\ub9dd(VPN)\uc774\ub780 \uc778\ud130\ub137\uacfc \uac19\uc740 \uacf5\uc911\ub9dd\uc744 \uc774\uc6a9\ud558\uc5ec \uc0ac\uc124\ub9dd\uc774 \uc694\uad6c\ud558\ub294 \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\ub3c4\ub85d \uad6c\ucd95\ud55c \ub9dd\uc73c\ub85c \uacf5\uc911\ub9dd \ub0b4\uc5d0\uc11c \ub9c8\uce58 \ub2e8\uc77c \ud68c\uc0ac\ub9cc \uc0ac\uc6a9\ud558\ub294 \uc804\uc6a9\uc120\ucc98\ub7fc \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uae30\uc220\uc744 \ub9d0\ud569\ub2c8\ub2e4. \uacf5\uc911\ub9dd\uc744 \uacf5\uc720\ud558\uae30 \ub54c\ubb38\uc5d0 \ub0ae\uc740 \ube44\uc6a9\uc73c\ub85c \uc804\uc6a9\uc120\uacfc \uac19\uc740 \uc218\uc900\uc758 \ub2a5\ub825\uc744 \uc81c\uacf5\ud558\ubbc0\ub85c, \ucd5c\uadfc \ub9ce\uc740 \uae30\uc5c5\uc758 Extranet\uacfc \uad11\ubc94\uc704\ud55c Intranet\uc5d0\uc11c \uc0ac\uc6a9\ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

VPN\uc740 \ud130\ub110\ub9c1 \ud504\ub85c\ud1a0\ucf5c\uacfc \ubcf4\uc548\uacfc\uc815\uc744 \uac70\uccd0 \ub0b4\ubd80 \uae30\ubc00\uc744 \uc720\uc9c0\ud558\uc5ec \ubcf4\uc548\uc131\uc774 \uc6b0\uc218\ud569\ub2c8\ub2e4. \ub610\ud55c, \uc678\ubd80\uc778\uc73c\ub85c\ubd80\ud130 \uc548\uc804\ud558\ub3c4\ub85d \uc8fc\uc18c \ubc0f \ub77c\uc6b0\ud130 \uccb4\uacc4\uc758 \ube44\uacf5\uac1c\uc640 \ub370\uc774\ud130 \uc554\ud638\ud654, \uc0ac\uc6a9\uc790 \uc778\uc99d, \uc0ac\uc6a9\uc790 \uc561\uc138\uc2a4 \uad8c\ud55c \ubc0f \uc81c\ud55c\uc758 \uae30\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n

\"\uc0ac\uc6a9\uc790<\/p>\n

1) PPTP(Point to Point Tunneling Protocol)
\nPPTP(Point to Point Tunneling Protocol)\ub294 \ub9c8\uc774\ud06c\ub85c\uc18c\ud504\ud2b8\uc0ac\uac00 \uc5b4\uc13c\ub4dc\uc0ac\uc640 \ud568\uaed8 \uc124\uacc4\ud55c VPN \ud504\ub85c\ud1a0\ucf5c\ub85c\uc11c, Window NT4.0\uc5d0\uc11c \ucc98\uc74c\uc73c\ub85c \uc81c\uacf5\ub418\uc5c8\uc2b5\ub2c8\ub2e4. PPTP\uc758 \uae30\ubcf8\uc740 PPP(Point to Point Protocol)\uc758 Packet\uc744 IP Packet\uc73c\ub85c Encapsulation\ud558\uc5ec IP \ub124\ud2b8\uc6cc\ud06c\uc5d0\uc11c \uc804\uc1a1\ud558\uae30 \uc704\ud55c \ud130\ub110\ub9c1 \uae30\ubc95\uc785\ub2c8\ub2e4.<\/p>\n

– \u00a0\ud130\ub110\ub9c1\uc5d0 \uc758\ud55c IP Packet\uc758 \ub77c\uc6b0\ud305\uc744 \uc704\ud574\uc11c\ub294 GRE(Generic Routing Encapsulation)\ub77c\uace0 \ud558\ub294 Routing Tag \uae30\ubc95\uc744 \uc0ac\uc6a9
\n– \u00a0IP, IPX \ub610\ub294 NetBEUI(Network BIOS Enhanced User Interface, IBM) \ud398\uc774\ub85c\ub4dc\ub97c \uc554\ud638\ud654\ud558\uace0, IP \ud5e4\ub354\ub85c \ucea1\uc290\ud654\ud558\uc5ec \uc804\uc1a1\ud568
\n– \u00a0\ud130\ub110\uc758 \uc720\uc9c0, \ubcf4\uc218, \uad00\ub9ac\ub97c \uc704\ud558\uc5ec TCP \uc5f0\uacb0\uc744 \uc0ac\uc6a9\ud558\uace0 \uc774\ub3d9 \uc0ac\uc6a9\uc790(Mobile user)\uac00 \uc11c\ubc84(Home Server)\uc5d0 \uc811\uc18d\ud558\uae30\uc5d0 \uc6a9\uc774\ud558\ub3c4\ub85d \uad6c\uc131\ub428
\n– \u00a0\uc11c\ubc84\uac00 \ub9c8\uc774\ud06c\ub85c\uc18c\ud504\ud2b8\uc0ac\uc758 \uc708\ub3c4 NT(Windows New Technology) \uc11c\ubc84\uc5ec\uc57c \ud558\uace0, \uc0ac\uc6a9\uc790\ub294 \ubcc4\ub3c4\uc758 PPTP \uc9c0\uc6d0 \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \uc0ac\uc6a9\ud574\uc57c \ud568
\n– \u00a0PPTP\ub294 \ud558\ub098\uc758 \ud130\ub110\uc5d0 \ud558\ub098\uc758 \uc5f0\uacb0\ub9cc\uc744 \uc9c0\uc6d0\ud558\uc5ec \uc77c\ub300\uc77c \ud1b5\uc2e0\ub9cc \uac00\ub2a5\ud558\ub2e4\ub294 \ub2e8\uc810\uc774 \uc788\uc5c8\uc73c\ub098 \ud604\uc7ac\ub294 \ub2e4\uc911\uc811\uc18d\uc744 \uc9c0\uc6d0\ud558\uae30\ub3c4 \ud568<\/p>\n

2) L2TP(Layer 2 Tunnelling Protocal)
\nL2TP\ub294 \ub9c8\uc774\ud06c\ub85c\uc18c\ud504\ud2b8\uc640 Cisco\uc5d0\uc11c \uc81c\uc548\ud55c L2F(Layer 2 Forwarding)\uc5d0 \uae30\ubc18\uc744 \ub450\uace0 PPTP\uc640\uc758 \ud638\ud658\uc131\uc744 \uace0\ub824\ud558\uc5ec \ub9cc\ub4e4\uc5b4\uc9c4 \ud130\ub110\ub9c1 \ud504\ub85c\ud1a0\ucf5c\uc758 \ud45c\uc900\uc785\ub2c8\ub2e4.
\nL2TP\ub294 IP, IPX, AppleTalk Protocol\uc5d0 \ub300\ud574 \uc9c0\uc6d0\ub418\uba70 X.25, ATM, Frame Relay, SONET\uacfc \uac19\uc740 WAN \uae30\uc220\ub3c4 \uc9c0\uc6d0\ud569\ub2c8\ub2e4. IPSec\uc744 \uc774\uc6a9\ud558\uc5ec \ud328\ud0b7\uc744 \uc554\ud638\ud654\ud558\ub294 \uae30\ub2a5\uc744 \ubcf4\uc720\ud558\uace0 \uc788\uc73c\uba70, L2TP\ub294 UDP 1701 \ud3ec\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc811\uc18d\uacfc \ub370\uc774\ud130 \uc804\uc1a1\uc744 \uad00\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n

* \uac00\uc785\uc790 \uc778\uc99d \ud655\uc778 \ubc0f \uc138\uc158 \uc5f0\uacb0 \uacfc\uc815
\n1. ISP\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 VPN \uc11c\ube44\uc2a4 \uc0ac\uc6a9\uc790\ub4e4\uc740 ISP\uc758 LAC(Layer2 Access Controller)\uc5d0 \uc778\uc99d\uc694\uccad
\n2. ISP\uc758 \uc778\uc99d\uc11c\ubc84\ub294 \uc0ac\uc6a9\uc790\uc5d0 \ub300\ud55c \uc544\uc774\ub514\uc640 \ube44\ubc00\ubc88\ud638\ub97c \ud655\uc778\ud558\uc5ec \uc0ac\uc6a9\ub2e4\uc5d0 \ub300\ud55c \uc811\uc18d\uc744 \ud5c8\uac00\ud568
\n3. \uc0ac\uc6a9\uc790\uac00 \uae30\uc5c5\uc758 \uc0ac\ub0b4\ub9dd\uc5d0 \uc811\uc18d\ud558\uace0\uac00 \ud560 \uacbd\uc6b0 ISP\uc758 \uc778\uc99d\uc11c\ubc84\ub294 \uae30\uc5c5\uc758 \uc778\uc99d\uc11c\ubc84\ub85c \ubd80\ud130 \uac00\uc785\uc790 \uc778\uc99d\uc744 \ud655\uc778\ud560\uc218 \uc788\ub294 \ud504\ub85d\uc2dc \uc778\uc99d \uae30\ub2a5\uc218\ud589
\n4. \uac00\uc785\uc790 \uc778\uc99d\uc774 \ud655\uc778\ub418\uba74 \uae30\uc5c5\uc758 VPN\uc7a5\ube44\ub294 ISP\uc758 LAC\uacfc \uc0dd\uc131\ub41c \ud130\ub110\uc758 \uc138\uc158\uc744 \uc720\uc9c0\ud558\uac8c\ub428
\n5. \uae30\uc5c5\uc758 VPN\uc7a5\ube44\ub294 ISP\uc758 \uc778\uc99d\uc11c\ubc84\uc5d0\uc11c \uc81c\uacfb\uc544\ub294 \uc0ac\uc6a9\uc790 \uc815\ubcf4\ub97c \uc774\uc6a9\ud558\uc5ec \ud574\ub2f9 \uc0ac\uc6a9\uc790\uc5d0 \ub300\ud55c \uc544\uc774\ud53c \uc8fc\uc18c\ub97c \uc544\uc774\ud53c \ud480\uc5d0\uc11c \ud560\ub2f9\ud558\uac8c \ub418\uace0, \uac00\uc785\uc790 \ub2e8\ub9d0\uacfc \uc0ac\ub0b4\ub9dd\uac04\uc5d0\ub294 \uc138\uc158\uc774 \uc5f0\uacb0\ub428<\/p>\n

3) L2F(Layer 2 Forwarding)
\nL2F\ub294 \uc2dc\uc2a4\ucf54(Cisco Systems) \uc0ac\uc5d0\uc11c \uc81c\uc548\ud55c \ud504\ub85c\ud1a0\ucf5c\uc785\ub2c8\ub2e4
\n– \uc6d0\uaca9\uc9c0\uc758 ISP \uc7a5\ube44\uc5d0\uc11c \uc811\uadfc Server\uce21\uc758 tunnel server\ub85c L2F \ud130\ub110\uc744 \uc0dd\uc131\uc2dc\ud0a4\uba70, \uc774 \uac00\uc0c1 \ud130\ub110\uc740 Direct-dial PPP\/RAS \uc138\uc158\uc744 \uc0dd\uc131\ud568
\n– \u00a0\uc6d0\uaca9\uc9c0 \uc0ac\uc6a9\uc790\uc758 home site\uc5d0\uc11c \uc8fc\uc18c\ub97c \ud560\ub2f9\ud558\uba70 home site\uc758 gateway\uc5d0\uc11c \uc0ac\uc6a9\uc790 \uc778\uc99d\uc744 \ud568
\n– \u00a0\ud558\ub098\uc758 \ud130\ub110\uc5d0 \uc5ec\ub7ec \uac1c\uc758 \uc5f0\uacb0\uc744 \uc9c0\uc6d0\ud558\uc5ec \ub2e4\uc790\uac04 \ud1b5\uc2e0\uc744 \uac00\ub2a5\ud558\ub3c4\ub85d \ud568
\n– \u00a0PPP(Point-to-Point Protocol)\ub97c \uc0ac\uc6a9\ud558\uba70, \uc778\uc99d\uc73c\ub85c\ub294 RADIUS\uc640 TACACS+\ub97c \uc774\uc6a9\ud568<\/p>\n

4) IPSec
\n* \uae30\ubcf8 \uac1c\ub150 \ubc0f \ud2b9\uc9d5
\nIP \ub9dd\uc5d0\uc11c \uc548\uc804\ud558\uac8c \uc815\ubcf4\ub97c \uc804\uc1a1\ud558\ub294 \ud45c\uc900\ud654\ub41c 3\uacc4\uce35 \ud130\ub110\ub9c1 \ud504\ub85c\ud1a0\ucf5c\ub85c IP \uacc4\uce35\uc758 \ubcf4\uc548\uc744 \uc704\ud574 IETF\uc5d0 \uc758\ud574 \uc81c\uc548\ub418\uc5b4 VPN \uad6c\ud604\uc5d0 \ub110\ub9ac \uc4f0\uc774\uace0 \uc788\uc2b5\ub2c8\ub2e4.
\n– \ub124\ud2b8\uc6cc\ud06c\uc0c1\uc758 IP Layer\uc5d0\uc11c\uc758 \ubcf4\uc548\uc5d0 \uc911\uc810\uc744 \ub450\uc5c8\uc73c\uba70, \uc0ac\uc124 \ubc0f \uacf5\uc911\ub9dd\uc744 \uc0ac\uc6a9\ud558\ub294 TCP\/IP \ud1b5\uc2e0\uc744 \ubcf4\ub2e4 \uc548\uc804\ud558\uac8c \uc720\uc9c0\ud558\uae30 \uc704\ud55c IP \ub370\uc774\ud130\uadf8\ub7a8\uc758 \uc778\uc99d, \ubb34\uacb0\uc131\uacfc \uae30\ubc00\uc131\uc744 \uc81c\uacf5
\n– IP \uacc4\uce35\uc5d0\uc11c \uc9c1\uc811 \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud568\uc5d0 \ub530\ub77c \uc0c1\uc704 \uacc4\uce35 \ud504\ub85c\uadf8\ub7a8\uc758 \ubcc0\uacbd\uc774 \ud544\uc694 \uc5c6\uc74c
\n– \uc554\ud638\ud654\ub41c \ud328\ud0b7\uc740 \ubcf4\ud1b5\uc758 IP \ud328\ud0b7\uacfc \ub3d9\uc77c\ud55c \ud615\ud0dc\ub97c \uac16\uae30 \ub54c\ubb38\uc5d0 \ub124\ud2b8\uc6cc\ud06c \uc7a5\ube44\uc758 \ub0b4\ubd80 \ubcc0\uacbd \uc5c6\uc774 IP \ub124\ud2b8\uc6cc\ud06c\ub97c \ud1b5\ud574\uc11c \uc27d\uac8c \ub77c\uc6b0\ud305\uc774 \uac00\ub2a5\ud568
\n– \ucc28\uc138\ub300 \uc778\ud130\ub137 \ud504\ub85c\ud1a0\ucf5c\uc778 IPv6\uc5d0\uc11c\ub294 IPSec\uc744 \uae30\ubcf8\uc801\uc73c\ub85c \ud3ec\ud568\ud558\uace0 \uc788\uc73c\uba70, IPv4\uc5d0\uc11c\ub3c4 IPSec\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \ubcf4\uc548\uc744 \uc704\ud574 \ud544\uc694\ud568<\/p>\n

* IPSec\uc758 \uad6c\ubd84
\n\"\uc0ac\uc6a9\uc790<\/p>\n

* IPSec \uc885\ub958
\n– AH(Authentication Header) Protocol
\nAH Protocol\uc740 IP \ub370\uc774\ud130\uadf8\ub7a8\uc5d0 \uc81c\uacf5\ud558\ub294 \uae30\ub2a5\uc73c\ub85c \uc0ac\uc6a9\uc790 \uc778\uc99d(Authentication)\uacfc \ub370\uc774\ud130 \ubb34\uacb0\uc131(Integrity)\uc5d0 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. AH\ub97c \uc774\uc6a9\ud558\uc5ec \uc778\uc99d\uc744 \ud560 \ub54c, MD5, SHA-1 \ub4f1\uc758 \uc778\uc99d \uc54c\uace0\ub9ac\uc998\uc744 \uc774\uc6a9\ud558\uc5ec \ud0a4 \uac12\uacfc IP \ud328\ud0b7\uc758 \ub370\uc774\ud130\ub97c \uc785\ub825\ud55c \uc778\uc99d \uac12\uc744 \uacc4\uc0b0\ud558\uc5ec AH\uc758 \uc778\uc99d \ud544\ub4dc\uc5d0 \uae30\ub85d\ud558\uac8c \ub418\uace0, \uc218\uc2e0\uc790\ub294 \uac19\uc740 \ud0a4\ub97c \uc774\uc6a9\ud558\uc5ec \uc778\uc99d \uac12\uc744 \uac80\uc99d\ud569\ub2c8\ub2e4. AH\ub294 \uc7ac\uc5f0\uacf5\uaca9(Replay attack)\uc73c\ub85c\ubd80\ud130\uc758 \ubcf4\ud638 \uae30\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n

\uc804\uc1a1\ubaa8\ub4dc\uc640 \ud130\ub110\ubaa8\ub4dc \ube44\uad50
\n\"\uc0ac\uc6a9\uc790<\/p>\n

– ESP(Encapsulation Security Payload) Protocol
\nESP\ub294 IPSec\uc5d0\uc11c IP \ud398\uc774\ub85c\ub4dc\ub97c \uc554\ud638\ud654\ud558\uc5ec \ub370\uc774\ud130 \uae30\ubc00\uc131(Confidentiality)\uc744 \uc81c\uacf5\ud568\uc73c\ub85c\uc368 \uc81c 3\uc790\uc758 \uc545\uc758\uc5d0 \ub370\uc774\ud130\uac00 \ub178\ucd9c\ub418\ub294 \uac83\uc744 \ucc28\ub2e8\ud569\ub2c8\ub2e4. IP \ub370\uc774\ud130\uadf8\ub7a8\uc5d0 \uc81c\uacf5\ud558\ub294 \uae30\ub2a5\uc73c\ub85c\uc11c \uc0ac\uc6a9\uc790 \ubc0f \ub370\uc774\ud130\uc758 \uc120\ud0dd\uc801 \uc778\uc99d, \ubb34\uacb0\uc131, \uae30\ubc00\uc131, \uc7ac\uc5f0\uacf5\uaca9(replay attack) \ubc29\uc9c0\ub97c \uc704\ud574 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ubd80\ubd84\uc801\uc778 \uc21c\uc11c \ubb34\uacb0\uc131, \uc81c\ud55c\uc801\uc778 \ud2b8\ub798\ud53d \ud50c\ub85c\uc6b0 \ube44\ubc00\uc131\ub3c4 \uac16\uc2b5\ub2c8\ub2e4.
\nAH\uc640 \ub2ec\ub9ac \uc554\ud638\ud654\ub97c \uc81c\uacf5\ud558\uba70 \ub300\uce6d\ud0a4(DES-CBC, 3DES) \uc554\ud638\ud654 \uc54c\uace0\ub9ac\uc998\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc801\uc6a9\ubc29\ubc95\uc744 \ubcf4\uba74 ESP \ub2e8\ub3c5\uc73c\ub85c \ud560 \uc218\ub3c4 \uc788\uace0, \uc778\uc99d \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uae30 \uc704\ud558\uc5ec AH\uc640 \ud568\uaed8 \uc0ac\uc6a9\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \ub610, \ud130\ub110\ubaa8\ub4dc\ub97c \uc0ac\uc6a9\ud560 \ub54c\ub294 ESP+AH \uc870\ud569\ud615\ud0dc\ub3c4 \uc0ac\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. ESP\ub97c \uc774\uc6a9\ud558\uc5ec host vs. host, host vs. \ubcf4\uc548 gateway, \ubcf4\uc548 gateway vs. gateway \ub4f1\uc5d0 \ub300\ud574\uc11c \ubcf4\uc548\uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud558\ub294 \ub370 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.
\n\uc55e\uc5d0\uc11c \uc124\uba85\ud55c \uac83\uacfc \uac19\uc774 ESP(Encapsulation Security Payload)\ub294 \ud130\ub110 \uc885\ub2e8\uac04\uc5d0 \ud611\uc0c1\ub41c \ud0a4\uc640 \uc554\ud638\ud654 \uc54c\uace0\ub9ac\uc998\uc73c\ub85c \ub370\uc774\ud130\uadf8\ub7a8\uc744 \uc554\ud638\ud654\ud558\ub294\ub370 \uc774\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n

\uc804\uc1a1\ubaa8\ub4dc\uc640 \ud130\ub110\ubaa8\ub4dc \ube44\uad50
\n\"\uc0ac\uc6a9\uc790<\/p>\n

* ESP + AH \uc774\uc6a9\ud55c IPSec \ubcf4\uc548 \uad6c\uc131
\n\"\uc0ac\uc6a9\uc790<\/p>\n

* IPSec\uc758 \ud0a4 \uad00\ub9ac \ud504\ub85c\ud1a0\ucf5c
\nIPSec\uc5d0\uc11c\ub294 \ud0a4 \uad00\ub9ac\uac00 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098, \ud0a4 \uad00\ub9ac\ub294 IPSec\uacfc \ub3c5\ub9bd\uc801\uc73c\ub85c \uad6c\ud604\ub418\ubbc0\ub85c, \uc5ec\ub7ec \uac00\uc9c0 \ud0a4 \uad00\ub9ac \ud504\ub85c\ud1a0\ucf5c \uc911\uc5d0\uc11c \uc120\ud0dd\ud558\uc5ec \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud0a4 \uad00\ub9ac \ud504\ub85c\ud1a0\ucf5c\uc5d0\ub294 SKIP, Photuris, ISAKMP \ub4f1\uc774 \uc788\uc2b5\ub2c8\ub2e4. \ud0a4 \uad00\ub9ac \ud504\ub85c\ud1a0\ucf5c\uc740 \uc544\uc9c1 RFC\ub85c \ucc44\ud0dd\ub418\uc5b4 \ud45c\uc900\ud654\ub418\uc9c0 \uc54a\uc558\uc2b5\ub2c8\ub2e4.
\n– ISAKMP(Internet Security Association and Key Management Protocol)
\nSA(Security Association) \uc124\uc815, \ud611\uc0c1, \ubcc0\uacbd, \uc0ad\uc81c \ub4f1 SA \uad00\ub9ac\uc640 \ud0a4 \uad50\ud658\uc744 \uc815\uc758\ud558\uc600\uc73c\ub098, \ud0a4 \uad50\ud658 \uba54\ucee4\ub2c8\uc998 \uc790\uccb4\uc5d0 \ub300\ud55c \uc5b8\uae09\uc740 \uc5c6\uc74c
\n– IKE(Internet Key Exchange) \ud504\ub85c\ud1a0\ucf5c
\nISAKMP\uc5d0\uc11c \uc815\uc758\ud55c Payload\uc758 \uad6c\uc131 \ubc0f \uba54\uc2dc\uc9c0 \ud574\uc11d \ubc29\ubc95\uacfc Oakley\ub77c\ub294 \ud0a4 \uacb0\uc815 \ud504\ub85c\ud1a0\ucf5c\uc5d0\uc11c \uc815\uc758\ud55c \ubc29\uc2dd\uc73c\ub85c \uc138\uc158\ud0a4\ub97c \uc720\ub3c4\ud588\uae30 \ub54c\ubb38\uc5d0 \ucd08\uae30\uc5d0 ISAKMP\/Oakley\ub77c\ub294 \uc774\ub984\uc73c\ub85c \ubd88\ub9bc
\nIKE \ud45c\uc900\uc740 \uac01\uac01\uc744 \uc801\uc808\ud788 \uc870\ud654\uc2dc\ucf1c\uc11c \ud45c\uc900\ud654\ud55c \uac83\uc784. IKE \uba54\uc2dc\uc9c0\ub294 UDP \ud504\ub85c\ud1a0\ucf5c\uc744 \uc0ac\uc6a9\ud574\uc11c \uc804\ub2ec\ub418\uba70 \ucd9c\ubc1c\uc9c0 \ubc0f \ub3c4\ucc29\uc9c0 \uc8fc\uc18c\ub294 500\ubc88 \ud3ec\ud2b8\ub97c \uc0ac\uc6a9\ud558\uac8c \ub428<\/p>\n

* VPN \ubcf4\uc548 \ucde8\uc57d\uc810 \ubc0f \ubcf4\uc644 \ubc29\ubc95
\nVPN\uc740 \ubcf4\uc548\uc131\uc774\ub098 \ub124\ud2b8\uc6cc\ud06c\uc758 \ud65c\uc6a9 \uce21\uba74\uc5d0\uc11c\ub098 \ub300\ub2e8\ud788 \uc88b\uc740 \uc194\ub8e8\uc158\uc784\uc5d0\ub3c4 \ubd88\uad6c\ud558\uace0 \ucde8\uc57d\uc810\uc774 \uc874\uc7ac\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ucde8\uc57d\uc810\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \ubcf4\uc644\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\n– \ubcf4\uc548 \ucde8\uc57d\uc810
\n\ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0 \ubc31 \ub3c4\uc5b4 \uc124\uce58 \ub610\ub294 \ud0a4 \ub178\ucd9c \uc2dc \ud574\ucee4\ub294 \uc815\uc0c1\uc801\uc778 \ud0a4\ub85c \uc815\uc0c1\uc811\uadfc \uac00\ub2a5\ud558\uba70 \ub0b4\ubd80\uc5d0 \uac00\uc7a5 \uc27d\uace0 \uc548\uc804\ud558\uac8c \uce68\uc785\uc774 \uac00\ub2a5\ud568
\n\ucd5c\ucd08 \uc0ac\uc6a9\uc790 \ud328\uc2a4\uc6cc\ub4dc \ud0a4\ub85c \ubaa8\ub4e0 \uc0ac\ub78c\ub4e4\uc774 \ub3d9\uc77c \ud0a4 \uc0ac\uc6a9 \uc2dc, \uc774 \ud0a4\uac00 \ub178\ucd9c\ub418\uba74 \uce68\uc785\uc790\uac00 \uc27d\uac8c \ud574\ub3c5 \uac00\ub2a5\ud568
\n– \ubcf4\uc644\ubc29\ubc95
\n\uac1c\uc778\uc6a9 \ubc29\ud654\ubcbd \ubc0f \uc548\ud2f0 \ubc14\uc774\ub7ec\uc2a4 \ud504\ub85c\uadf8\ub7a8\uc744 \uc124\uce58\ud558\uc5ec \ubc31\ub3c4\uc5b4 \ud504\ub85c\uadf8\ub7a8\uc744 \uc81c\uac70\ud558\uc5ec\uc57c \ud568. \uc548\uc804\ud55c \ud0a4\uad00\ub9ac \ubc0f \uc0ac\uc6a9\uc790 \uc778\uc99d\uad00\ub9ac\ub97c \ud558\uc5ec\uc57c\ud568<\/p>\n

\uc694\uc57d
\n* \uac00\uc0c1\uc0ac\uc124\ub9dd
\n\uc778\ud130\ub137\uacfc \uac19\uc740 \uacf5\uc911\ub9dd\uc744 \uc774\uc6a9\ud558\uc5ec \uc0ac\uc124\ub9dd\uc774 \uc694\uad6c\ud558\ub294 \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\ub3c4\ub85d \uad6c\ucd95\ud55c \ub9dd\uc73c\ub85c \uacf5\uc911\ub9dd \ub0b4\uc5d0\uc11c \ub9c8\uce58 \ub2e8\uc77c \ud68c\uc0ac\ub9cc \uc0ac\uc6a9\ud558\ub294 \uc804\uc6a9\uc120\ucc98\ub7fc \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uae30\uc220\uc744 \ub9d0\ud569\ub2c8\ub2e4.<\/p>\n

* \ud130\ub110\ub9c1
\n\uc1a1\uc2e0\uc790\uc640 \uc218\uc2e0\uc790 \uc0ac\uc774\uc758 \uc804\uc1a1\ub85c\uc5d0 \uc678\ubd80\ub85c\ubd80\ud130\uc758 \uce68\uc785\uc744 \ub9c9\uae30 \uc704\ud574 \uc77c\uc885\uc758 \ud30c\uc774\ud504\ub97c \uad6c\uc131\ud558\ub294 \uac83\uc73c\ub85c \ud30c\uc774\ud504\ub294 \ud130\ub110\ub9c1\uc744 \uc9c0\uc6d0\ud558\ub294 \ud504\ub85c\ud1a0\ucf5c\uc744 \uc0ac\uc6a9\ud558\uc5ec \uad6c\ud604\ud558\uace0 \uc788\uc73c\uba70, \uc0ac\uc124\ub9dd\uacfc \uac19\uc740 \ubcf4\uc548 \uae30\ub2a5\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \ud130\ub110\ub9c1\ub418\ub294 \ub370\uc774\ud130\ub97c \ud398\uc774\ub85c\ub4dc(Payload)\ub77c\uace0 \ubd80\ub974\uba70 \ud130\ub110\ub9c1 \uad6c\uac04\uc5d0\uc11c \ud398\uc774\ub85c\ub4dc\ub294 \uadf8\uc800 \uc804\uc1a1\ub418\ub294 \ub370\uc774\ud130\ub85c \ucde8\uae09\ub418\uc5b4 \uadf8 \ub0b4\uc6a9\uc740 \ubcc0\uacbd\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4
\n\"\uc0ac\uc6a9\uc790<\/p>\n

\uac00\uc0c1 \uc0ac\uc124\ub9dd(VPN, Virtual Private Network) \ud504\ub85c\ud1a0\ucf5c\uc758 \uc885\ub958\uc640 \uac01\uac01\uc758 \ud2b9\uc9d5
\n\"\uc0ac\uc6a9\uc790<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

  \uac00\uc0c1 \uc0ac\uc124\ub9dd(VPN)\uc774\ub780 \uc778\ud130\ub137\uacfc \uac19\uc740 \uacf5\uc911\ub9dd\uc744 \uc774\uc6a9\ud558\uc5ec \uc0ac\uc124\ub9dd\uc774 \uc694\uad6c\ud558\ub294 \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\ub3c4\ub85d \uad6c\ucd95\ud55c \ub9dd\uc73c\ub85c \uacf5\uc911\ub9dd \ub0b4\uc5d0\uc11c \ub9c8\uce58 \ub2e8\uc77c \ud68c\uc0ac\ub9cc \uc0ac\uc6a9\ud558\ub294 \uc804\uc6a9\uc120\ucc98\ub7fc \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uae30\uc220\uc744 \ub9d0\ud569\ub2c8\ub2e4. \uacf5\uc911\ub9dd\uc744 \uacf5\uc720\ud558\uae30 \ub54c\ubb38\uc5d0 \ub0ae\uc740 \ube44\uc6a9\uc73c\ub85c \uc804\uc6a9\uc120\uacfc \uac19\uc740 \uc218\uc900\uc758 \ub2a5\ub825\uc744 \uc81c\uacf5\ud558\ubbc0\ub85c, \ucd5c\uadfc \ub9ce\uc740 \uae30\uc5c5\uc758 … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[527],"tags":[611,612,613,614,615,616],"class_list":["post-519","post","type-post","status-publish","format-standard","hentry","category-network","tag-ipsec","tag-l2f","tag-l2tp","tag-pptp","tag-vpn","tag-616"],"yoast_head":"\n\uac00\uc0c1 \uc0ac\uc124\ub9dd(VPN) - Apollo89.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/apollo89.com\/wordpress\/?p=519\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\uac00\uc0c1 \uc0ac\uc124\ub9dd(VPN) - Apollo89.com\" \/>\n<meta property=\"og:description\" content=\"  \uac00\uc0c1 \uc0ac\uc124\ub9dd(VPN)\uc774\ub780 \uc778\ud130\ub137\uacfc \uac19\uc740 \uacf5\uc911\ub9dd\uc744 \uc774\uc6a9\ud558\uc5ec \uc0ac\uc124\ub9dd\uc774 \uc694\uad6c\ud558\ub294 \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\ub3c4\ub85d \uad6c\ucd95\ud55c \ub9dd\uc73c\ub85c \uacf5\uc911\ub9dd \ub0b4\uc5d0\uc11c \ub9c8\uce58 \ub2e8\uc77c \ud68c\uc0ac\ub9cc \uc0ac\uc6a9\ud558\ub294 \uc804\uc6a9\uc120\ucc98\ub7fc \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uae30\uc220\uc744 \ub9d0\ud569\ub2c8\ub2e4. \uacf5\uc911\ub9dd\uc744 \uacf5\uc720\ud558\uae30 \ub54c\ubb38\uc5d0 \ub0ae\uc740 \ube44\uc6a9\uc73c\ub85c \uc804\uc6a9\uc120\uacfc \uac19\uc740 \uc218\uc900\uc758 \ub2a5\ub825\uc744 \uc81c\uacf5\ud558\ubbc0\ub85c, \ucd5c\uadfc \ub9ce\uc740 \uae30\uc5c5\uc758 … Continue reading →\" \/>\n<meta property=\"og:url\" content=\"https:\/\/apollo89.com\/wordpress\/?p=519\" \/>\n<meta property=\"og:site_name\" content=\"Apollo89.com\" \/>\n<meta property=\"article:published_time\" content=\"2012-05-04T16:01:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2013-01-27T10:12:35+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/apollo89.com\/wordpress\/wp-content\/uploads\/1\/9452481667.png\" \/>\n<meta name=\"author\" content=\"apollo89\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\uae00\uc4f4\uc774\" \/>\n\t<meta name=\"twitter:data1\" content=\"apollo89\" \/>\n\t<meta name=\"twitter:label2\" content=\"\uc608\uc0c1 \ub418\ub294 \ud310\ub3c5 \uc2dc\uac04\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\ubd84\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/apollo89.com\\\/wordpress\\\/?p=519#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/apollo89.com\\\/wordpress\\\/?p=519\"},\"author\":{\"name\":\"apollo89\",\"@id\":\"https:\\\/\\\/apollo89.com\\\/wordpress\\\/#\\\/schema\\\/person\\\/93f56825cac3b2f18e5f107995066c82\"},\"headline\":\"\uac00\uc0c1 \uc0ac\uc124\ub9dd(VPN)\",\"datePublished\":\"2012-05-04T16:01:29+00:00\",\"dateModified\":\"2013-01-27T10:12:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/apollo89.com\\\/wordpress\\\/?p=519\"},\"wordCount\":261,\"commentCount\":2,\"image\":{\"@id\":\"https:\\\/\\\/apollo89.com\\\/wordpress\\\/?p=519#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/apollo89.com\\\/wordpress\\\/wp-content\\\/uploads\\\/1\\\/9452481667.png\",\"keywords\":[\"IPSec\",\"L2F\",\"L2TP\",\"PPTP\",\"VPN\",\"\uac00\uc0c1\uc0ac\uc124\ub9dd\"],\"articleSection\":[\"Network\"],\"inLanguage\":\"ko-KR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/apollo89.com\\\/wordpress\\\/?p=519#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/apollo89.com\\\/wordpress\\\/?p=519\",\"url\":\"https:\\\/\\\/apollo89.com\\\/wordpress\\\/?p=519\",\"name\":\"\uac00\uc0c1 \uc0ac\uc124\ub9dd(VPN) - 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