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Astuces <span class="caps">SSH</span> - Alexis Métaireau </title>
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<a class="main" href="/">Alexis Métaireau</a>
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<h1 class="post-title">Astuces <span class="caps">SSH</span></h1>
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<time datetime="2012-12-27T00:00:00+01:00">27 décembre 2012</time>
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<h2 id="tunelling">Tunelling</h2>
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<p>Parce que je m’en rapelle jamais (tête de linote):</p>
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<div class="highlight"><pre><span></span><code>$<span class="w"> </span>ssh<span class="w"> </span>-f<span class="w"> </span>hote<span class="w"> </span>-L<span class="w"> </span>local:lolnet.org:destination<span class="w"> </span>-N
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</code></pre></div>
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<h2 id="sshconfig">.ssh/config</h2>
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<p>(merci <a href="http://majerti.fr">gaston</a> !)</p>
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<p>La directive suivante dans .ssh/config permet de sauter d’hôte en hôte
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séparés par des “+” :</p>
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<div class="highlight"><pre><span></span><code>Host <span class="gs">*+*</span>
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ProxyCommand ssh $(echo %h | sed
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's/+[^+]*$//;s/\([^+%%]*\)%%\([^+]*\)$/\2 -l \1/;s/:/ -p /')
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PATH=.:\$PATH nc -w1 $(echo %h | sed 's/^.*+//;/:/!s/$/ %p/;s/:/ /')
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</code></pre></div>
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<p>On peut donc spécifier des “sauts” ssh du style:</p>
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<div class="highlight"><pre><span></span><code><span class="n">ssh</span><span class="w"> </span><span class="n">root</span><span class="mf">@91.25.25.25</span><span class="o">+</span><span class="mf">192.168.1.1</span>
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</code></pre></div>
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<p>Ensuite on peut essayer de rajouter:</p>
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<div class="highlight"><pre><span></span><code>Host <label_pour_mon_serveur_privé>
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user <monuser(root)>
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IdentityFile <chemin vers ma clé ssh pour le serveur publique>
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hostname ip_serveur_publique+ip_serveur_privé
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</code></pre></div>
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