DNS and Iodine
DNS and Iodine
DNS and Iodine
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<strong>DNS</strong> & <strong>Iodine</strong><br />
Christian Grothoff<br />
<strong>DNS</strong> Caching<br />
• <strong>DNS</strong> servers cache mappings (<strong>DNS</strong> records)<br />
• Entries time out based on expiration time in <strong>DNS</strong> record<br />
• TLD servers are typically cached in local name servers<br />
⇒ Root name servers not visited often<br />
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