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<title>DNS¿Í ¾ÆÆÄÄ¡¿Í °ü·ÃµÈ »çÇ× - Apache HTTP Server Version 2.5</title>
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<p class="menu"><a href="./mod/">¸ðµâ</a> | <a href="./mod/quickreference.html">Áö½Ã¾îµé</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="./glossary.html">¿ë¾î</a> | <a href="./sitemap.html">»çÀÌÆ®¸Ê</a></p>
<p class="apache">Apache HTTP Server Version 2.5</p>
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<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="./">Version 2.5</a></div><div id="page-content"><div id="preamble"><h1>DNS¿Í ¾ÆÆÄÄ¡¿Í °ü·ÃµÈ »çÇ×</h1>
<div class="toplang">
<p><span>°¡´ÉÇÑ ¾ð¾î: </span><a href="./en/dns-caveats.html" hreflang="en" rel="alternate" title="English">&nbsp;en&nbsp;</a> |
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<div class="outofdate">ÀÌ ¹®¼­´Â ÃÖ½ÅÆÇ ¹ø¿ªÀÌ ¾Æ´Õ´Ï´Ù.
ÃÖ±Ù¿¡ º¯°æµÈ ³»¿ëÀº ¿µ¾î ¹®¼­¸¦ Âü°íÇϼ¼¿ä.</div>
<p>ÀÌ ¹®¼­¸¦ ÇÑ ¹®ÀåÀ¸·Î ¿ä¾àÇÒ ¼ö ÀÖ´Ù. ¾ÆÆÄÄ¡°¡ ¼³Á¤ÆÄÀÏÀ»
ÀÐÀ»¶§ DNS¸¦ ÀÇÁ¸ÇÏÁö¾Êµµ·Ï Ç϶ó. ¾ÆÆÄÄ¡°¡ ¼³Á¤ÆÄÀÏÀ» Àдµ¥
DNS°¡ ÇÊ¿äÇÏ´Ù¸é ¼­¹ö´Â ½Å·Ú¼º ¹®Á¦ (½ÃÀÛÀÌ ¾ÈµÉ ¼öµµ ÀÖ´Ù)
ȤÀº ¼­ºñ½º°ÅºÎ °ø°Ý°ú (»ç¿ëÀÚ°¡ ´Ù¸¥ »ç¿ëÀÚ¿¡ ´ëÇÑ Á¢±ÙÀ»
°¡·Îä´Â °ÍÀ» Æ÷ÇÔÇÏ¿©) ¼­ºñ½ºµµµÏ(theft of service) °ø°Ý¿¡
½Ã´Þ¸± ¼ö ÀÖ´Ù.</p>
</div>
<div id="quickview"><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#example">°£´ÜÇÑ ¿¹Á¦</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#denial">¼­ºñ½º°ÅºÎ (Denial of Service)</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#main">"ÁÖ¼­¹ö" ÁÖ¼Ò</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#tips">ÀÌ ¹®Á¦¸¦ ÇÇÇϱâÀ§ÇÑ ÆÁ</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#appendix">ºÎ·Ï: ¾ÕÀ¸·Î´Â</a></li>
</ul><h3>Âü°í</h3><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>
<div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="example" id="example">°£´ÜÇÑ ¿¹Á¦</a></h2>
<div class="example"><p><code>
&lt;VirtualHost www.abc.dom&gt; <br />
ServerAdmin webgirl@abc.dom <br />
DocumentRoot /www/abc <br />
&lt;/VirtualHost&gt;
</code></p></div>
<p>¾ÆÆÄÄ¡°¡ Á¤»óÀûÀ¸·Î µ¿ÀÛÇϱâÀ§Çؼ­´Â °¢ °¡»óÈ£½ºÆ®¿¡
´ëÇØ µÎ°¡Áö Á¤º¸°¡ Àý´ëÀûÀ¸·Î ÇÊ¿äÇÏ´Ù. ÀÌ Á¤º¸´Â
<code class="directive"><a href="./mod/core.html#servername">ServerName</a></code>°ú ¼­¹ö°¡
±â´Ù¸®°í ÀÀ´äÇÒ ÃÖ¼Ò ÇÑ°³ÀÇ IP ÁÖ¼ÒÀÌ´Ù. ÀÌ ¿¹´Â IP ÁÖ¼Ò°¡
¾ø±â¶§¹®¿¡, ¾ÆÆÄÄ¡´Â DNS¸¦ »ç¿ëÇÏ¿© <code>www.abc.dom</code>ÀÇ
ÁÖ¼Ò¸¦ ã¾Æ¾ß ÇÑ´Ù. ¼­¹ö°¡ ¼³Á¤ÆÄÀÏÀ» ÀÐÀ»¶§ ¾î¶² ÀÌÀ¯¿¡¼­°Ç
DNS¸¦ »ç¿ëÇÒ ¼ö ¾ø´Ù¸é °¡»óÈ£½ºÆ®¸¦ <strong>¸¸µé ¼ö ¾ø´Ù</strong>.
ÀÌ °¡»óÈ£½ºÆ®´Â ¿äû¿¡ ÀÀ´äÇÒ ¼ö ¾ø´Ù. (¾ÆÆÄÄ¡ 1.2 ÀÌÀü
¹öÀü¿¡¼­´Â ½ÉÁö¾î ¼­¹ö°¡ ºÎÆõµ ¾ÈÇÑ´Ù.)</p>
<p><code>www.abc.dom</code>ÀÇ ÁÖ¼Ò°¡ 192.0.2.1À̶ó°í °¡Á¤ÇÏÀÚ.
±×¸®°í ´ÙÀ½ ¼³Á¤À» º¸¶ó:</p>
<div class="example"><p><code>
&lt;VirtualHost 192.0.2.1&gt; <br />
ServerAdmin webgirl@abc.dom <br />
DocumentRoot /www/abc <br />
&lt;/VirtualHost&gt;
</code></p></div>
<p>ÀÌÁ¦ ¾ÆÆÄÄ¡´Â ÀÌ °¡»óÈ£½ºÆ®ÀÇ <code>ServerName</code>À»
ã±âÀ§ÇØ ¿ªDNS¸¦ »ç¿ëÇØ¾ß ÇÑ´Ù. ¿ªÃ£±â°¡ ½ÇÆÐÇÏ¸é ¾ÆÆÄÄ¡´Â
°¡»óÈ£½ºÆ®¸¦ ºÎºÐÀûÀ¸·Î ²ö´Ù. (¾ÆÆÄÄ¡ 1.2 ÀÌÀü ¹öÀü¿¡¼­´Â
½ÉÁö¾î ¼­¹ö°¡ ºÎÆõµ ¾ÈÇÑ´Ù.) Áï, ÀÌ °æ¿ì À̸§±â¹Ý
°¡»óÈ£½ºÆ®¶ó¸é °¡»óÈ£½ºÆ®´Â ¿ÏÀüÈ÷ µ¿ÀÛÇÏÁö¾Ê°í, ip±â¹ÝÀ̶ó¸é
´ëºÎºÐ µ¿ÀÛÇÑ´Ù. ±×·¯³ª ¾ÆÆÄÄ¡°¡ ¼­¹ö¸íÀ» Æ÷ÇÔÇÏ¿© ¼­¹öÀÇ
Àüü URLÀ» ¸¸µé¾î¾ß ÇÑ´Ù¸é Á¤»óÀûÀÎ URLÀ» ¸¸µéÁö ¸øÇÑ´Ù.</p>
<p>¾Æ·¡ °æ¿ì ÀÌ µÎ°¡Áö ¹®Á¦°¡ ¾ø´Ù.</p>
<div class="example"><p><code>
&lt;VirtualHost 192.0.2.1&gt; <br />
ServerName www.abc.dom <br />
ServerAdmin webgirl@abc.dom <br />
DocumentRoot /www/abc <br />
&lt;/VirtualHost&gt;
</code></p></div>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="denial" id="denial">¼­ºñ½º°ÅºÎ (Denial of Service)</a></h2>
<p>(ÃÖ¼ÒÇÑ) µÎ°¡Áö Á¾·ùÀÇ ¼­ºñ½º°ÅºÎ°¡ ¹ß»ýÇÒ ¼ö ÀÖ´Ù.
¾ÆÆÄÄ¡ 1.2 ÀÌÀü ¹öÀüÀÇ °æ¿ì ¾î¶² °¡»óÈ£½ºÆ®¿¡¼­¶óµµ
À§¿¡¼­ ¸»ÇÑ µÎ DNS °Ë»öÀÌ ½ÇÆÐÇÏ¸é ¼­¹ö°¡ ÄÑÁöÁöµµ ¾Ê´Â´Ù.
DNS°¡ ´ç½ÅÀÇ ±ÇÇÑ ¹ÛÀÇ ¹®Á¦ÀÏ ¼öµµ ÀÖ´Ù. ¿¹¸¦ µé¾î,
<code>abc.dom</code>ÀÌ °í°´ »çÀÌÆ®ÀÌ°í °í°´ÀÌ ÀÚ½ÅÀÇ DNS¸¦
°ü¸®ÇÑ´Ù¸é, <code>www.abc.dom</code> ·¹Äڵ带 Áö¿ì±â¸¸ Çصµ
(1.2 ÀÌÀü) ¼­¹ö´Â ½ÃÀÛÇÏÁö ¸øÇÑ´Ù.</p>
<p>ÈξÀ ´õ ±³È°ÇÑ ¹æ¹ýµµ ÀÖ´Ù. ´ÙÀ½ ¼³Á¤À» »ìÆ캸ÀÚ:</p>
<div class="example"><p><code>
&lt;VirtualHost www.abc.dom&gt; <br />
&nbsp;&nbsp;ServerAdmin webgirl@abc.dom <br />
&nbsp;&nbsp;DocumentRoot /www/abc <br />
&lt;/VirtualHost&gt; <br />
<br />
&lt;VirtualHost www.def.dom&gt; <br />
&nbsp;&nbsp;ServerAdmin webguy@def.dom <br />
&nbsp;&nbsp;DocumentRoot /www/def <br />
&lt;/VirtualHost&gt;
</code></p></div>
<p>´ç½ÅÀÌ <code>www.abc.dom</code>¿¡ 192.0.2.1,
<code>www.def.dom</code>¿¡ 192.0.2.2¸¦ ÇÒ´çÇß´Ù°í ÇÏÀÚ.
¶Ç, <code>def.dom</code>Àº ÀÚü DNS¸¦ »ç¿ëÇÑ´Ù°í °¡Á¤ÇÏÀÚ.
ÀÌ ¼³Á¤°ú ÇÔ²² <code>def.dom</code>À» <code>abc.dom</code>À¸·Î
°¡´Â ¸ðµç Åë½ÅÀ» °¡·Îç ¼ö ÀÖ´Â Àå¼Ò¿¡ µÎ¾ú´Ù. ±×·¸´Ù¸é ±×µéÀº
<code>www.def.dom</code>À» 192.0.2.1·Î ¼³Á¤Çϱ⸸ ÇÏ¸é µÈ´Ù.
±×µéÀÌ ÀÚü DNS¸¦ »ç¿ëÇϱ⶧¹®¿¡ ´ç½ÅÀº ±×µéÀÌ ¿øÇϴµ¥·Î
<code>www.def.dom</code> ·¹Äڵ带 ¼³Á¤ÇÏ´Â °ÍÀ» ¸·À» ¼ö
¾ø´Ù.</p>
<p>(»ç¿ëÀÚ°¡ <code>http://www.abc.dom/whatever</code> Çü½ÄÀÇ
URLÀ» ÀÔ·ÂÇÏ´Â °æ¿ì¸¦ Æ÷ÇÔÇÏ¿©) 192.0.2.1·Î ¿À´Â ¸ðµç ¿äûÀ»
<code>def.dom</code> °¡»óÈ£½ºÆ®°¡ ¼­ºñ½ºÇÏ°Ô µÈ´Ù. ¿Ö ÀÌ·±
ÀÏÀÌ ÀϾ´ÂÁö ÀÌÇØÇÏ·Á¸é ¾ÆÆÄÄ¡°¡ ¾î¶»°Ô °¡»óÈ£½ºÆ®·Î
¿À´Â ¿äûÀ» ó¸®ÇÏ´ÂÁö¿¡ ´ëÇÑ ¼³¸íÀÌ ÇÊ¿äÇÏ´Ù.
<a href="vhosts/details.html">¿©±â</a>¿¡ ´ë°­ ¼³¸íµÇÀÖ´Ù.</p>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="main" id="main">"ÁÖ¼­¹ö" ÁÖ¼Ò</a></h2>
<p>¾ÆÆÄÄ¡ 1.1¿¡¼­ <a href="vhosts/name-based.html">À̸§±â¹Ý
°¡»óÈ£½ºÆ® Áö¿ø</a>ÀÌ Æ÷ÇԵǾú±â¶§¹®¿¡ ¾ÆÆÄÄ¡´Â À¥¼­¹ö¸¦
½ÇÇàÇϴ ȣ½ºÆ®ÀÇ IP ÁÖ¼Ò(µé)¸¦ ¾Ë ÇÊ¿ä°¡ »ý°å´Ù. ÀÌ ÁÖ¼Ò´Â
(ÀÖ´Ù¸é) Àü¿ª <code class="directive"><a href="./mod/core.html#servername">ServerName</a></code>
ȤÀº C ÇÔ¼ö <code>gethostname</code>À¸·Î (¸í·ÉÇÁ·ÒÇÁÆ®¿¡
"hostname"À» ÀÔ·ÂÇßÀ»¶§¿Í °°Àº °á°ú) ¾ò´Â´Ù. ±×·¯¸é ÀÌ ÁÖ¼Ò·Î
DNS °Ë»öÀ» ÇÑ´Ù. ÇöÀç ÀÌ °Ë»öÀº ÇÇÇÒ ¼ö ¾ø´Ù.</p>
<p>DNS ¼­¹ö°¡ Á׾ ÀÌ °Ë»öÀÌ ½ÇÆÐÇÒ °Í °°´Ù¸é
<code>/etc/hosts</code>¿¡ È£½ºÆ®¸íÀ» Áý¾î³ÖÀ» ¼ö ÀÖ´Ù.
(ÄÄÇ»ÅÍ°¡ Á¤»óÀûÀ¸·Î ºÎÆõǾú´Ù¸é ¾Æ¸¶ ÀÌ¹Ì µé¾îÀÖÀ» °ÍÀÌ´Ù.)
±×¸®°í DNS°¡ ½ÇÆÐÇÏ¸é ¼­¹ö°¡ <code>/etc/hosts</code>¸¦
»ç¿ëÇÏ´ÂÁö È®ÀÎÇ϶ó. »ç¿ëÇÏ´Â ¿î¿µÃ¼Á¦¿¡ µû¶ó
<code>/etc/resolv.conf</code> ȤÀº <code>/etc/nsswitch.conf</code>¸¦
¼öÁ¤ÇÏ¸é µÉ °ÍÀÌ´Ù.</p>
<p>¼­¹ö°¡ ¾î¶² ÀÌÀ¯¿¡¼­°Ç DNS¸¦ °Ë»öÇÏ¸é ¾ÈµÈ´Ù¸é
<code>HOSTRESORDER</code> ȯ°æº¯¼ö¸¦ "local"·Î ¼³Á¤ÇÏ°í
¾ÆÆÄÄ¡¸¦ ½ÇÇàÇÒ ¼ö ÀÖ´Ù. <code class="module"><a href="./mod/mod_env.html">mod_env</a></code>¸¦
»ç¿ëÇÏ¿© ȯ°æÀ» º¯°æÇÏÁö ¾Ê´Â´Ù¸é ÀÌ È¯°æº¯¼ö´Â
CGI¿¡µµ ¿µÇâÀ» ÁØ´Ù. ¿î¿µÃ¼Á¦ÀÇ manpage³ª FAQ¸¦ Âü°íÇÏ´Â
°ÍÀÌ ÁÁ´Ù.</p>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="tips" id="tips">ÀÌ ¹®Á¦¸¦ ÇÇÇϱâÀ§ÇÑ ÆÁ</a></h2>
<ul>
<li>
<code class="directive"><a href="./mod/core.html#virtualhost">VirtualHost</a></code>¿¡ IP
ÁÖ¼Ò¸¦ »ç¿ëÇ϶ó
</li>
<li>
<code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code>¿¡
IP ÁÖ¼Ò¸¦ »ç¿ëÇ϶ó
</li>
<li>
¸ðµç °¡»óÈ£½ºÆ®´Â ¸í½ÃÀûÀ¸·Î
<code class="directive"><a href="./mod/core.html#servername">ServerName</a></code>À»
°¡Áö°Ô Ç϶ó
</li>
<li>¾î¶² ÆäÀÌÁöµµ ¼­ºñ½ºÇÏÁö¾Ê´Â
<code>&lt;VirtualHost _default_:*&gt;</code> ¼­¹ö¸¦
¸¸µé¾î¶ó</li>
</ul>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="appendix" id="appendix">ºÎ·Ï: ¾ÕÀ¸·Î´Â</a></h2>
<p>DNS¿Í °ü·ÃµÈ »óȲÀº ¸Å¿ì ¹Ù¶÷Á÷ÇÏÁö ¸øÇÏ´Ù. ¾ÆÆÄÄ¡ 1.2¿¡¼­
¿ì¸®´Â DNS°¡ ½ÇÆÐÇÑ °æ¿ì¿¡µµ ÃÖ¼ÒÇÑ ¼­¹ö°¡ ÄÑÁöµµ·Ï ³ë·ÂÇßÁö¸¸
°á°ú´Â ³ª»¦´Ù. ¾î·µç ¼³Á¤ÆÄÀÏ¿¡ Á÷Á¢ IP ÁÖ¼Ò¸¦ ¿ä±¸ÇÏ´Â
°ÍÀº ¹øÈ£¸¦ ´Ù½Ã ¼³Á¤ÇؾßÇÒ ¿äÁò ÀÎÅͳݿ¡ ¸Å¿ì ¹Ù¶÷Á÷ÇÏÁö
¸øÇÏ´Ù.</p>
<p>À§¿¡¼­ ¼³¸íÇÑ ¼­ºñ½ºµµµÏ °ø°ÝÀ» ¸·´Â ÇÑ°¡Áö ¹æ¹ýÀº °Ë»öÇÑ
IP ÁÖ¼Ò¿¡ ´Ù½Ã ¿ªDNS °Ë»öÀ» ÇÏ¿© µÎ À̸§À» ºñ±³ÇÏ´Â °ÍÀÌ´Ù.
¼­·Î ´Ù¸¥ °æ¿ì °¡»óÈ£½ºÆ®¸¦ °¡µ¿ÇÏÁö ¾ÊÀ» ¼ö ÀÖ´Ù. ÀÌ ¹æ¹ýÀº
¿ªDNS°¡ ¿Ã¹Ù·Î ¼³Á¤µÇ¾ß ÇÑ´Ù. (FTP ¼­¹ö³ª TCP wrapper°¡
"Áߺ¹-¿ª" DNS °Ë»öÀ» ÀÚÁÖ »ç¿ëÇϱ⶧¹®¿¡ ´ëºÎºÐÀÇ °ü¸®ÀÚ¿¡°Ô
Àͼ÷ÇÒ °ÍÀÌ´Ù.)</p>
<p>¾î·µç IP ÁÖ¼Ò¸¦ »ç¿ëÇÏÁö¾ÊÀ¸¸é DNS°¡ ½ÇÆÐÇÑ °æ¿ì °¡»óÈ£½ºÆ®
À¥¼­¹ö¸¦ ¹ÏÀ» ¼ö ÀÖ°Ô ½ÃÀÛÇÒ ¼ö ¾ø´Ù. ¼³Á¤ÀÇ ÀϺθ¦ ¹«½ÃÇÏ´Â
°Í°ú °°Àº ºÎºÐÀûÀÎ ÇØ°áÃ¥Àº À¥¼­¹ö Àüü¸¦ ½ÃÀÛÇÏÁö¾Ê´Â °Íº¸´Ù
´õ ³ª»Ü ¼öµµ ÀÖ´Ù.</p>
<p>HTTP/1.1ÀÌ ³ª¿Ô°í ºê¶ó¿ìÀú¿Í ÇÁ·Ï½Ã°¡ <code>Host</code>
Çì´õ¸¦ º¸³»±â ½ÃÀÛÇßÀ¸¹Ç·Î IP±â¹Ý °¡»óÈ£½ºÆ®¸¦ ¿ÏÀüÈ÷
»ç¿ëÇÏÁö¾Ê´Â °ÍÀÌ °¡´ÉÇØÁú °ÍÀÌ´Ù. ±×·¯¸é À¥¼­¹ö´Â ¼³Á¤Áß¿¡¼­
DNS °Ë»öÀ» ÇÒ ÇÊ¿ä°¡ ¾ø¾îÁø´Ù. ±×·¯³ª 1997³â 3¿ù¿¡´Â Áß¿äÇÑ
À¥¼­¹ö¿¡ Æ÷ÇÔÇÒ Á¤µµ·Î À̸§±â¹Ý °¡»óÈ£½ºÆ®°¡ ³Î¸® »ç¿ëµÇÁö
¾Ê¾Ò´Ù.</p>
</div></div>
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