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<a href='/'>burble.dn42</a> / <a href='/services/'>Services</a> / Ping Challenge
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<article class="gdoc-markdown">
<h1>Ping Challenge</h1>
<p>Can you solve the burble.dn42 ping challenge ?</p>
<div class="gdoc-page__anchorwrap"><h2 id="to-start">To start<a data-clipboard-text="http://localhost:2010/services/ping/#to-start" class="gdoc-page__anchor gdoc-page__anchor--right clip" aria-label="Anchor To start" href="#to-start"><svg class="icon link"><use xlink:href="#link"></use></svg></a></h2></div>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-sh" data-lang="sh"><span class="line"><span class="cl">$ ping -s <span class="m">0</span> -c <span class="m">1</span> fd42:4242:2601:31f0::1
</span></span></code></pre></div><div class="gdoc-page__anchorwrap"><h2 id="hints">Hints<a data-clipboard-text="http://localhost:2010/services/ping/#hints" class="gdoc-page__anchor gdoc-page__anchor--right clip" aria-label="Anchor Hints" href="#hints"><svg class="icon link"><use xlink:href="#link"></use></svg></a></h2></div>
<ul>
<li>Use <code>-c 1</code> to only return one ping, <em>unless instructed otherwise</em></li>
<li>Use <code>-s 0</code> to create a zero sized ping, <em>unless instructed otherwise</em></li>
<li>Packet capture is your friend</li>
<li>You may also find a <a href="http://kioubit.dn42/cyber/">CyberChef</a> useful</li>
<li>The server maintains state based on your source IP and will time out idle clients after several days. There are ways to check the status (revealed during the challenge) but if your state times out you will need to restart from the nearest checkpoint.</li>
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