{"id":3779,"date":"2025-11-04T08:01:00","date_gmt":"2025-11-03T23:01:00","guid":{"rendered":"https:\/\/www.litcoder.com\/?p=3779"},"modified":"2025-11-04T15:15:30","modified_gmt":"2025-11-04T06:15:30","slug":"%ec%99%b8%eb%b6%80%ec%97%90%ec%84%9c-private%eb%a7%9d%ec%97%90-%eb%ac%bc%eb%a6%b0-host%ec%97%90-%ec%a0%91%ec%86%8d%ed%95%98%ea%b8%b0-ssh-jump-host","status":"publish","type":"post","link":"https:\/\/litcoder.com\/?p=3779","title":{"rendered":"\uc678\ubd80\uc5d0\uc11c private\ub9dd\uc5d0 \ubb3c\ub9b0 host\ub85c \uc811\uc18d\ud558\uae30 &#8211; SSH Jump Host"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\uc0ac\ubb34\uc2e4\uc5d0 \uc788\ub294 \ub0b4 workstation\uc5d0\ub294 \ub450\uac1c\uc758 LAN\uc774 \uc5f0\uacb0\ub418\uc5b4 \uc788\uace0 \uac01\uac01 public network\uc640 private network\uc5d0 \uc5f0\uacb0\ub418\uc5b4\uc788\ub2e4. \uc678\ubd80\uc5d0\uc11c private network\uc5d0 \uc5f0\uacb0\ub418\uc5b4 \uc788\ub294 target host\uc5d0 SSH\ub85c \uc5f0\uacb0 \ud560 \ub54c\ub294 \uba3c\uc800 workstation\uc5d0 ssh\ub85c \uc5f0\uacb0\ud558\uace0, \uc5ec\uae30\uc5d0\uc11c private\ub9dd\uc5d0 \ubb3c\ub824\uc788\ub294 target host\ub85c \ub610 \ub2e4\uc2dc ssh\ub97c \uc5f0\uacb0\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"846\" height=\"645\" src=\"https:\/\/www.litcoder.com\/wp-content\/uploads\/2025\/11\/ssh_dual_network-1.png\" alt=\"\" class=\"wp-image-3801\" srcset=\"https:\/\/litcoder.com\/wp-content\/uploads\/2025\/11\/ssh_dual_network-1.png 846w, https:\/\/litcoder.com\/wp-content\/uploads\/2025\/11\/ssh_dual_network-1-300x229.png 300w, https:\/\/litcoder.com\/wp-content\/uploads\/2025\/11\/ssh_dual_network-1-768x586.png 768w, https:\/\/litcoder.com\/wp-content\/uploads\/2025\/11\/ssh_dual_network-1-624x476.png 624w\" sizes=\"auto, (max-width: 846px) 100vw, 846px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ud558\uc9c0\ub9cc ssh\uc758 -J option\uc744 \uc774\uc6a9\ud558\uba74 workstation\uc744 jump host\ub85c \uc774\uc6a9\ud574\uc11c \uc774\ub7f0 \uadc0\ucc2e\uc740 \uc5ec\ub7ec\ubc88 \uc811\uc18d\uc744 \ud53c\ud560 \uc218 \uc788\ub2e4. \ub2e4\uc74c\uc740 ssh\uc758 -J \uc635\uc158\uc5d0 \ub300\ud55c \uc124\uba85\uc744 man-page\uc5d0\uc11c \ubc1c\ucdcc\ud574\uc11c \uc758\uc5ed\ud55c \uac83\uc774\ub2e4.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">-J \ubaa9\uc801\uc9c0\n    Jump host\uc5d0 ssh \uc5f0\uacb0\uc744 \uc0dd\uc131\ud55c \ub2e4\uc74c \ucd5c\uc885 \ubaa9\uc801\uc9c0 \ud638\uc2a4\ud2b8\ub85c TCP \ud3ec\uc6cc\ub529\uc744 \uc124\uc815\ud558\uc5ec\n    \uc5f0\uacb0\uc744 \uc0dd\uc131\ud569\ub2c8\ub2e4. \uc5ec\ub7ec\uac1c\uc758 jump host\ub97c \uba85\uc2dc\ud558\ub824\uba74 \ucf64\ub9c8\ub97c \uc0ac\uc6a9\ud574\uc11c \uc9c0\uc815\ud574 \uc904 \uc218\n    \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uc635\uc158\uc740 ProxyJump \ud658\uacbd\uc124\uc815 \uc608\uc57d\uc5b4\uc5d0 \ub300\ud55c \ub2e8\ucd95\uc124\uc815 \uc785\ub2c8\ub2e4. \n    \uc8fc\uc758: \uc77c\ubc18\uc801\uc73c\ub85c \uba85\ub839\uc904\uc5d0 \uc791\uc131\ud558\ub294 \uc635\uc158\ub4e4\uc740 \ucd5c\uc885 \ubaa9\uc801\uc9c0 \ud638\uc2a4\ud2b8\uc5d0 \uc801\uc6a9\ub418\uba70 jump host\n    \ub4e4\uc5d0\ub294 \uc801\uc6a9\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. Jump host\uc5d0 \uc635\uc158\uc744 \uc124\uc815\ud558\ub824\uba74 ~\/.ssh\/config file\uc744\n    \ud65c\uc6a9 \ud558\uc138\uc694.<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 workstation\uc758 public IP\uac00 203.0.113.5, private network\uc5d0 \uc788\ub294 target\uc758 IP\uac00 192.168.100.5\ub77c \ud560 \ub54c \ub2e4\uc74c\uacfc \uac19\uc774 203.0.113.5\ub97c jump host\ub85c \uc124\uc815\ud574\uc11c \ud55c \ubc88\uc5d0 \uc811\uc18d\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"raw\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ssh -J user@203.0.113.5 user@192.168.100.5<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub7ec\ud55c \uc124\uc815\uc744 <strong><code>.ssh\/config<\/code><\/strong>\uc5d0 jump host\ub97c \uba85\uc2dc\ud574\uc11c \uc124\uc815\ud574 \ub450\uba74 workstation\uc744 jump host\ub85c\ud574\uc11c target\uc5d0 \uc811\uc18d\ud560 \uc218 \uc788\uace0 \ubb34\uc5c7\ubcf4\ub2e4\ub3c4 visual studio code\uc5d0\uc11c\ub3c4 \uace7\ubc14\ub85c \uc811\uc18d\ud560 \uc218 \uc788\ub2e4\ub294 \uc810\uc774 \ud3b8\ud558\ub2e4. \uc544\ub798\uc758 \uc124\uc815\uc5d0\uc11c <strong><code>ProxyJump<\/code><\/strong> \uc124\uc815\ud558\ub294 \ubd80\ubd84\uc744 \ub208\uc5ec\uaca8 \ubcf4\uc790.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Host workstation\n  HostName 203.0.113.5\n  User user\n\nHost target\n  HostName 192.168.100.5\n  User user\n  ProxyJump workstation<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc124\uc815 \ud6c4\uc5d0\ub294 private IP\uc778 target\uc73c\ub85c \uace7\ubc14\ub85c \uc811\uc18d \ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"raw\" data-enlighter-theme=\"dracula\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ssh target<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\uc0ac\ubb34\uc2e4\uc5d0 \uc788\ub294 \ub0b4 workstation\uc5d0\ub294 \ub450\uac1c\uc758 LAN\uc774 \uc5f0\uacb0\ub418\uc5b4 \uc788\uace0 \uac01\uac01 public network\uc640 private network\uc5d0 \uc5f0\uacb0\ub418\uc5b4\uc788\ub2e4. \uc678\ubd80\uc5d0\uc11c private network\uc5d0 \uc5f0\uacb0\ub418\uc5b4 \uc788\ub294 target host\uc5d0 SSH\ub85c \uc5f0\uacb0 \ud560 \ub54c\ub294 \uba3c\uc800 workstation\uc5d0 ssh\ub85c \uc5f0\uacb0\ud558\uace0, \uc5ec\uae30\uc5d0\uc11c private\ub9dd\uc5d0 \ubb3c\ub824\uc788\ub294 target host\ub85c \ub610 \ub2e4\uc2dc ssh\ub97c \uc5f0\uacb0\ud574\uc57c \ud55c\ub2e4. \ud558\uc9c0\ub9cc ssh\uc758 -J option\uc744 \uc774\uc6a9\ud558\uba74 workstation\uc744 jump host\ub85c \uc774\uc6a9\ud574\uc11c \uc774\ub7f0 \uadc0\ucc2e\uc740 \uc5ec\ub7ec\ubc88 \uc811\uc18d\uc744 \ud53c\ud560 \uc218 \uc788\ub2e4. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[4,6],"tags":[72,75,117,279],"class_list":["post-3779","post","type-post","status-publish","format-standard","hentry","category-linux","category-tools","tag-linux","tag-mac","tag-ssh","tag-vscode"],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":4409,"url":"https:\/\/litcoder.com\/?p=4409","url_meta":{"origin":3779,"position":0},"title":"[Tip] \ud3ec\ud2b8 \ud3ec\uc6cc\ub529 \uc124\uc815 \uc0c1\ud0dc\uc5d0\uc11c VNC SSH Tunneling","author":"litcoder","date":"2026\ub144 5\uc6d4 20\uc77c","format":false,"excerpt":"VNC SSH Tunneling\uc5d0 \ub300\ud574 \ub2e4\ub8ec \uc801\uc774 \uc788\uc5c8\ub294\ub370, macOS\uc5d0\uc11c \uae30\ubcf8 \uc81c\uacf5\ub418\ub294 Screen Sharing \uac19\uc740 app\uc73c\ub85c \uc811\uc18d\ud558\ub824\uba74 SSH \ud130\ub110\ub9c1\uc744 \uc124\uc815\ud558\ub294 GUI\uac00 \uc5c6\uc73c\ubbc0\ub85c \ud574\ub2f9 \ud3ec\uc2a4\ud305\uc758 \"SSH Tunneling \uc124\uc815\uc774 \uc5c6\ub294 \uacbd\uc6b0\" \ud56d\ubaa9\uc758 \uc548\ub0b4\uc5d0 \ub530\ub77c \ub2e4\uc74c\uacfc \uac19\uc740 \uba85\ub839\uc5b4\ub97c \ud130\ubbf8\ub110\uc5d0 \uc785\ub825\ud558\uace0 localhost\uc758 5999\ubc88 \ud3ec\ud2b8\ub85c \uc5f0\uacb0\uc744 \uc2dc\ub3c4\ud558\uba74 \ub41c\ub2e4\uace0 \ud588\uc5c8\ub2e4. # SSH \ud130\ub110\ub9c1. # 22\ubc88 SSH \ud3ec\ud2b8\ub97c \ud1b5\ud574\u2026","rel":"","context":"&quot;Linux&quot;\uc5d0\uc11c","block_context":{"text":"Linux","link":"https:\/\/litcoder.com\/?cat=4"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/litcoder.com\/wp-content\/uploads\/2026\/05\/macos_screen_sharing_vnc_settings.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":3558,"url":"https:\/\/litcoder.com\/?p=3558","url_meta":{"origin":3779,"position":1},"title":"VNC SSH Tunneling","author":"litcoder","date":"2025\ub144 8\uc6d4 18\uc77c","format":false,"excerpt":"Local VNC server\ub294 \uc811\uc18d\uc774 \uac00\ub2a5\ud558\uc9c0\ub9cc \uc678\ubd80\uc5d0\uc11c \uc811\uc18d\uc774 \ubd88\uac00\ub2a5 \ud558\ub2e4\uba74 SSH tunneling\uc744 \uc124\uc815\ud574\uc11c \uc5f0\uacb0\uc744 \uc2dc\ub3c4\ud560 \uc218 \uc788\ub2e4. VNC Client\uc5d0\uc11c SSH Tunneling\uc744 \uc9c0\uc6d0\ud558\ub294 \uacbd\uc6b0 SSH tunneling\uc744 \uc9c0\uc6d0\ud558\ub294 VNC client\uc778 Remmina\uc640 \uac19\uc740 \uacbd\uc6b0\uc5d0\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc11c\ubc84\ub85c localhost:5901\uc744 \uc124\uc815\ud55c\ub2e4. \uc5ec\uae30\uc5d0 \uc11c\ubc84 IP\uac00 \uc544\ub2c8\ub77c localhost\ub97c \uc801\uc5b4\uc8fc\ub294\uac8c \uc880 \uc774\uc0c1\ud574 \ubcf4\uc774\uae34 \ud558\uc9c0\ub9cc SSH tunneling\uc744 \uc124\uc815\ud55c \uc0c1\ud0dc\uc5d0\uc11c\ub294 localhost\uc758\u2026","rel":"","context":"&quot;Linux&quot;\uc5d0\uc11c","block_context":{"text":"Linux","link":"https:\/\/litcoder.com\/?cat=4"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/litcoder.com\/wp-content\/uploads\/2025\/08\/remmina_basic_setting.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/litcoder.com\/wp-content\/uploads\/2025\/08\/remmina_basic_setting.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/litcoder.com\/wp-content\/uploads\/2025\/08\/remmina_basic_setting.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/litcoder.com\/wp-content\/uploads\/2025\/08\/remmina_basic_setting.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":3853,"url":"https:\/\/litcoder.com\/?p=3853","url_meta":{"origin":3779,"position":2},"title":"SSH Permission denied (publickey)","author":"litcoder","date":"2025\ub144 11\uc6d4 26\uc77c","format":false,"excerpt":"\uc8fc\ub85c \uc2dc\uc2a4\ud15c\uc744 \uc124\uc815\ud558\ub294 \ucd08\uae30\uc5d0 \ubc1c\uc0dd\ud558\ub294 \ubb38\uc81c\uc778\ub370 private key\uac00 \uc81c\ub300\ub85c \uc788\uace0 file permission\ub3c4 \uc798 \uc124\uc815 \ub418\uc5b4 \uc788\uc74c\uc5d0\ub3c4 ssh \uc811\uc18d\uc744 \uc2dc\ub3c4\ud558\uba74 \uad8c\ud55c \uc624\ub958\uac00 \ubc1c\uc0dd\ud558\ub294 \uacbd\uc6b0\uac00 \uc788\ub2e4. $ ssh -T git@github.com git@github.com: Permission denied (publickey). \ud574\uacb0\ud558\ub294 \ubc29\ubc95\uc740 \uc0ac\uc6a9\ud558\ub824\ub294 private key\ub97c ssh-add \uba85\ub839\uc5b4\ub97c \uc774\uc6a9\ud574\uc11c ssh-agent\uc5d0\uac8c \ucd94\uac00\ud574 \uc8fc\ub294 \uac83\uc778\ub370, \ub9cc\uc57d ssh-agent\uac00 \ub3d9\uc791\ud558\uc9c0 \uc54a\ub294 \uc0c1\ud0dc\ub77c\uba74 \uc774\u2026","rel":"","context":"&quot;Linux&quot;\uc5d0\uc11c","block_context":{"text":"Linux","link":"https:\/\/litcoder.com\/?cat=4"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1767,"url":"https:\/\/litcoder.com\/?p=1767","url_meta":{"origin":3779,"position":3},"title":"Firewall \ubc14\uae65\uc758 git\uc744 clone\ud558\uae30","author":"litcoder","date":"2019\ub144 1\uc6d4 18\uc77c","format":false,"excerpt":"Firewall\ub4f1\uc774 \ub9c9\uace0 \uc788\uc5b4\uc11c \uc678\ubd80\uc758 git repository\ub97c HTTPS\ub85c\ub294 clone\ud560 \uc218 \uc788\uc9c0\ub9cc SSH\ub85c\ub294 \ub9c9\ud788\ub294 \uacbd\uc6b0\uac00 \uc788\ub2e4. \ud2b9\ud788\ub098 GitHub\uc758 two-factor authentication\uc744 \uc124\uc815\ud55c \uacbd\uc6b0\ub77c\uba74 \ub9e4\ubc88 token\uac12\uc744 \uc785\ub825\ud558\ub294 \uac83 \ub54c\ubb38\uc5d0 commit\uc744 push\ud558\ub294\uac8c \ub9e4\uc6b0 \uadc0\ucc2e\uc544\uc9c4\ub2e4. \uc774 \ubb38\uc81c\ub294 ssh config file\uc5d0 Proxy command\ub97c \uc124\uc815\ud574\uc11c \ud574\uacb0\ud560 \uc218 \uc788\ub294\ub370${HOME}\/.ssh\/config\uc5d0 \ub2e4\uc74c\uacfc \uac19\uc774 \ucd94\uac00\ud574 \uc8fc\uace0, credential caching\uc744 \uc124\uc815\ud574 \uc900\ub2e4. (-S option\uc5d0\ub294\u2026","rel":"","context":"&quot;Tools &amp; Tips&quot;\uc5d0\uc11c","block_context":{"text":"Tools &amp; Tips","link":"https:\/\/litcoder.com\/?cat=6"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2575,"url":"https:\/\/litcoder.com\/?p=2575","url_meta":{"origin":3779,"position":4},"title":"Lightshail Ubuntu \ubc30\ud3ec\ud310 \uc5c5\uadf8\ub808\uc774\ub4dc \ud6c4 ssh \uc811\uc18d\uc774 \uc548\ub41c\ub2e4.","author":"litcoder","date":"2020\ub144 10\uc6d4 15\uc77c","format":false,"excerpt":"\ub9dd\ud588\ub2e4! Litghtsail\uc758 Ubuntu \ubc30\ud3ec\ud310\uc774 \ub108\ubb34 \uc624\ub798\uc804 \uac83\uc774\ub77c \ucf58\uc194\uc5d0 \uc811\uadfc\ud574\uc11c \uc870\uc2ec\uc2a4\ub7fd\uac8c screen session\ub3c4 \uc0c8\ub85c \ub9cc\ub4e4\uc5b4 \uac00\uba74\uc11c \uc5c5\uadf8\ub808\uc774\ub4dc\ub97c \ud588\ub294\ub370 \ub05d\ub098\uace0 \ub098\ub2c8 SSH\uac00 \uc548\ub41c\ub2e4. \uc544\ub9c8\ub3c4 \uc911\uac04\uc5d0 SSH\uad00\ub828 \ud658\uacbd\uc124\uc815\uc744 \ud30c\uc77c\uc744 \ubcc0\uacbd\ud560 \uac83\uc778\uc9c0 \ubb3b\ub294 \uc120\ud0dd\uba54\ub274\uac00 \ub098\uc654\ub294\ub370, \ud604\uc7ac \uc124\uc815\uc744 \uadf8\ub0e5 \uc4f0\uaca0\ub2e4\uace0 \ud588\ub358\uac8c \ubb38\uc81c\uc778\uac83 \uac19\ub2e4. \ub2e4\ud589\ud788 blogging service\ub294 \uc798\ub3cc\uc544 \uac00\uace0 \uc788\uc9c0\ub9cc SSH\uac00 \uc548\ub418\uba74 \uc11c\ubc84\uad00\ub9ac\ub97c \ud560 \ubc29\ubc95\uc774 \uc5c6\ub294\ub370...\u2026","rel":"","context":"&quot;Linux&quot;\uc5d0\uc11c","block_context":{"text":"Linux","link":"https:\/\/litcoder.com\/?cat=4"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/litcoder.com\/wp-content\/uploads\/2024\/05\/sc_wp_instance_from_snapshot-1.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/litcoder.com\/wp-content\/uploads\/2024\/05\/sc_wp_instance_from_snapshot-1.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/litcoder.com\/wp-content\/uploads\/2024\/05\/sc_wp_instance_from_snapshot-1.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/litcoder.com\/wp-content\/uploads\/2024\/05\/sc_wp_instance_from_snapshot-1.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":1337,"url":"https:\/\/litcoder.com\/?p=1337","url_meta":{"origin":3779,"position":5},"title":"MinnowboardMAX\uc5d0 Android \uc62c\ub824 \ubcf8 \ub0b4\uc6a9 \uc815\ub9ac","author":"litcoder","date":"2015\ub144 9\uc6d4 19\uc77c","format":false,"excerpt":"Android \/ Chromium OS \/ Windows\ub97c \uc62c\ub824 \ubcfc \uc218 \uc788\ub294 Intel Baytrail \uae30\ubc18\uc758 \uac1c\ubc1c\ubcf4\ub4dc\uc778 MinnowboardMAX\uc5d0 Android 5.1\uc744 install\ud558\ub294 \uacfc\uc815\uc744 \uc124\uba85\ud55c\ub2e4. \ud544\uc694\ud55c \uac83 \ub4e4 Minnowboard MAX - \ud310\ub9e4\ud558\ub294 \uacf3, 2015\ub144 9\uc6d4 \ud604\uc7ac \uad6d\ub0b4\uc5d0\uc11c \ud310\ub9e4\ud558\ub294 \uacf3\uc740 \uc5c6\ub294\uac83 \uac19\ub2e4. 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