<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Apr 26, 2013, at 8:24, Cihan SUBASI (GARANTI TEKNOLOJI) wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi,<br><br>Also can someone explain why tcp53 should be allowed on the firewalls if dns is behind a firewall?<br><br></div></blockquote><div><br></div><div>In addition to other already posted reasons, TCP isn't susceptible to reflection attacks. (FWIW.)</div><br><blockquote type="cite"><div>And why auditors do not like tcp53 open to public?<br></div></blockquote></div><div><br></div>Can't read their minds, but, well, the auditor has at least been misinformed on how DNS works.<div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=<span></span>-=-=-=-<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>Edward Lewis <span></span> <br>NeuStar <span></span> You can leave a voice message at +1-571-434-5468<br><br>There are no answers - just tradeoffs, decisions, and responses.</div></div></div></span></span>
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