39 lines
2.2 KiB
HTML
39 lines
2.2 KiB
HTML
<!DOCTYPE html>
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<html>
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<title>iRedMail Easy: What is SSH jump server</title>
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src="./images/logo-iredmail.png"
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<span>iRedMail</span>
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// <a href="./index.html">Document Index</a></div><h1 id="iredmail-easy-what-is-ssh-jump-server">iRedMail Easy: 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://github.com/iredmail/docs/">GitHub 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://github.com/iredmail/docs/archive/master.zip">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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