New: cloud-platform.what.is.ssh.jump.server.html
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# What is SSH jump server
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It's common that you have a protected Linux/BSD server that isn’t publicly
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accessible. Typically, you may have what is commonly referred to as a
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*__jump server__* or *__bastion server__* which is accessible from a public
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network (sometimes this jump server would be in a DMZ, and also Linux/BSD),
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you connect to this jump server first, then connect to the protected server
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from jump server.
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Sample setup:
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```
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+--------+ +-------------+ +------------------+
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| Laptop | <---> | Jump server | <--> | Protected server |
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+--------+ +-------------+ +------------------+
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```
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You can connect to the protected server through jump server via ssh with
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command like below:
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```
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ssh -v -J user1@jump-server user2@protected-server
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```
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## References
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- [SSH manual page](https://man.openbsd.org/ssh#J)
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>What is SSH jump server</title>
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<link rel="stylesheet" type="text/css" href="./css/markdown.css" />
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</head>
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<body>
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<div id="navigation">
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<a href="https://www.iredmail.org" target="_blank">
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<img alt="iRedMail web site"
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src="./images/logo-iredmail.png"
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style="vertical-align: middle; height: 30px;"
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/>
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<span>iRedMail</span>
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</a>
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// <a href="./index.html">Document Index</a></div><h1 id="what-is-ssh-jump-server">What is SSH jump server</h1>
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<p>It's common that you have a protected Linux/BSD server that isn’t publicly
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accessible. Typically, you may have what is commonly referred to as a
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<em><strong>jump server</strong></em> or <em><strong>bastion server</strong></em> which is accessible from a public
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network (sometimes this jump server would be in a DMZ, and also Linux/BSD),
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you connect to this jump server first, then connect to the protected server
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from jump server.</p>
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<p>Sample setup:</p>
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<pre><code>+--------+ +-------------+ +------------------+
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| Laptop | <---> | Jump server | <--> | Protected server |
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+--------+ +-------------+ +------------------+
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</code></pre>
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<p>You can connect to the protected server through jump server via ssh with
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command like below:</p>
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<pre><code>ssh -v -J user1@jump-server user2@protected-server
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</code></pre>
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<h2 id="references">References</h2>
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<ul>
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<li><a href="https://man.openbsd.org/ssh#J">SSH manual page</a></li>
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</ul><div class="footer">
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<p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. You can <a href="https://bitbucket.org/zhb/iredmail-docs/get/tip.tar.bz2">download the latest version</a> for offline reading. If you found something wrong, please do <a href="https://www.iredmail.org/contact.html">contact us</a> to fix it.</p>
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</div>
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<script async src="https://www.googletagmanager.com/gtag/js?id=UA-3293801-21"></script>
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<script>
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</body></html>
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@ -83,6 +83,7 @@
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</ul>
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</ul>
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<h3 id="iredmail-cloud-deployment-platform">iRedMail Cloud Deployment Platform</h3>
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<h3 id="iredmail-cloud-deployment-platform">iRedMail Cloud Deployment Platform</h3>
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<ul>
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<ul>
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<li><a href="cloud-platform.what.is.ssh.jump.server.html">What is SSH jump server</a></li>
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<li><a href="cloud.platform.changelog.html">Release Notes of iRedMail Cloud Platform</a></li>
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<li><a href="cloud.platform.changelog.html">Release Notes of iRedMail Cloud Platform</a></li>
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</ul>
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</ul>
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<h3 id="migration">Migrations</h3>
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<h3 id="migration">Migrations</h3>
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