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<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="./">Version 2.4</a></div><div id="page-content"><div id="preamble"><h1>DNS�� ����ġ�� ���õ� ����</h1>
<div class="toplang">
<p><span>������ ���: </span><a href="./en/dns-caveats.html" hreflang="en" rel="alternate" title="English"> en </a> |
<a href="./fr/dns-caveats.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
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<div class="outofdate">�� ������ �ֽ��� ������ �ƴմϴ�.
�ֱٿ� ����� ���� ���� ������ ����ϼ���.</div>
<p>�� ������ �� ������ ����� �� �ִ�. ����ġ�� ��������
����� DNS�� �������ʵ��� �϶�. ����ġ�� �������� �дµ�
DNS�� �ʿ��ϴٸ� ������ �ŷڼ� ���� (���� �ȵ� ���� �ִ�)
Ȥ�� ���ź� ���ݰ� (���ڰ� �ٸ� ���ڿ� ���� �����
����ä�� ��� ����Ͽ�) ������(theft of service) ���ݿ�
�ô� �� �ִ�.</p>
</div>
<div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#example">������ ����</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#denial">���ź� (Denial of Service)</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#main">"�ּ���" �ּ�</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#tips">�� ������ ���ϱ��� �</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#appendix">�η�: ����δ�</a></li>
</ul><h3>���</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">������ ����</a></h2>
<div class="example"><p><code>
<VirtualHost www.abc.dom> <br />
ServerAdmin [email protected] <br />
DocumentRoot /www/abc <br />
</VirtualHost>
</code></p></div>
<p>����ġ�� ������� �����ϱ��ؼ��� �� ����ȣ��Ʈ��
���� �ΰ��� ������ �������� �ʿ��ϴ�. �� ������
<code class="directive"><a href="./mod/core.html#servername">ServerName</a></code>�� ������
��ٸ��� ������ �ּ� �Ѱ��� IP �ּ�̴�. �� ���� IP �ּҰ�
�������, ����ġ�� DNS�� ����Ͽ� <code>www.abc.dom</code>��
�ּҸ� ã�ƾ� �Ѵ�. ������ �������� ����� � ���������
DNS�� ����� �� ���ٸ� ����ȣ��Ʈ�� <strong>���� �� ����</strong>.
�� ����ȣ��Ʈ�� ��û�� ������ �� ����. (����ġ 1.2 ���
���������� ����� ������ ���õ� ���Ѵ�.)</p>
<p><code>www.abc.dom</code>�� �ּҰ� 192.0.2.1�̶�� �������.
���� ��� ������ ����:</p>
<div class="example"><p><code>
<VirtualHost 192.0.2.1> <br />
ServerAdmin [email protected] <br />
DocumentRoot /www/abc <br />
</VirtualHost>
</code></p></div>
<p>��� ����ġ�� �� ����ȣ��Ʈ�� <code>ServerName</code>��
ã���� ��DNS�� ����ؾ� �Ѵ�. ��ã�Ⱑ �����ϸ� ����ġ��
����ȣ��Ʈ�� �κ������ ����. (����ġ 1.2 ��� ����������
����� ������ ���õ� ���Ѵ�.) ��, �� ��� �̸����
����ȣ��Ʈ��� ����ȣ��Ʈ�� ���� ��������ʰ�, ip���̶��
��κ� �����Ѵ�. ���� ����ġ�� ������ ����Ͽ� ������
��ü URL�� ������ �Ѵٸ� ����� URL�� ���� ���Ѵ�.</p>
<p>�Ʒ� ��� �� �ΰ��� ������ ����.</p>
<div class="example"><p><code>
<VirtualHost 192.0.2.1> <br />
ServerName www.abc.dom <br />
ServerAdmin [email protected] <br />
DocumentRoot /www/abc <br />
</VirtualHost>
</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">���ź� (Denial of Service)</a></h2>
<p>(�ּ���) �ΰ��� ������ ���źΰ� ���� �� �ִ�.
����ġ 1.2 ��� ������ ��� � ����ȣ��Ʈ������
������ ���� �� DNS �˻��� �����ϸ� ������ ������� �ʴ´�.
DNS�� ���� ���� ��� ������ ���� �ִ�. ���� ���,
<code>abc.dom</code>�� �� ���Ʈ�̰� ���� �ڽ�� DNS��
�����Ѵٸ�, <code>www.abc.dom</code> ���ڵ带 ����⸸ �ص�
(1.2 ���) ������ ������ ���Ѵ�.</p>
<p>�ξ� �� ��Ȱ�� ���� �ִ�. ��� ������ ���캸��:</p>
<div class="example"><p><code>
<VirtualHost www.abc.dom> <br />
ServerAdmin [email protected] <br />
DocumentRoot /www/abc <br />
</VirtualHost> <br />
<br />
<VirtualHost www.def.dom> <br />
ServerAdmin [email protected] <br />
DocumentRoot /www/def <br />
</VirtualHost>
</code></p></div>
<p>���� <code>www.abc.dom</code>�� 192.0.2.1,
<code>www.def.dom</code>�� 192.0.2.2�� �Ҵ��ߴٰ� ���.
��, <code>def.dom</code>�� ��ü DNS�� ����Ѵٰ� �������.
�� ������ �Բ� <code>def.dom</code>�� <code>abc.dom</code>����
���� ��� ���� ����ç �� �ִ� ��ҿ� �ξ���. ���ٸ� ��
<code>www.def.dom</code>�� 192.0.2.1�� �����ϱ⸸ �ϸ� �ȴ�.
��� ��ü DNS�� ����ϱ���� ���� ��� ���ϴµ���
<code>www.def.dom</code> ���ڵ带 �����ϴ� ��� ���� ��
����.</p>
<p>(���ڰ� <code>http://www.abc.dom/whatever</code> ����
URL�� �Է��ϴ� ��츦 ����Ͽ�) 192.0.2.1�� ���� ��� ��û��
<code>def.dom</code> ����ȣ��Ʈ�� �����ϰ� �ȴ�. �� �̷�
��� �Ͼ��� �����Ϸ��� ����ġ�� ��� ����ȣ��Ʈ��
���� ��û�� ó���ϴ���� ���� ����� �ʿ��ϴ�.
<a href="vhosts/details.html">����</a>�� �밭 �����ִ�.</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">"�ּ���" �ּ�</a></h2>
<p>����ġ 1.1���� <a href="vhosts/name-based.html">�̸����
����ȣ��Ʈ ����</a>�� ��ԵǾ������ ����ġ�� ��������
�����ϴ� ȣ��Ʈ�� IP �ּ�(��)�� �� �ʿ䰡 �����. �� �ּҴ�
(�ִٸ�) ���� <code class="directive"><a href="./mod/core.html#servername">ServerName</a></code>
Ȥ�� C �Լ� <code>gethostname</code>���� (�������Ʈ��
"hostname"�� �Է�������� ���� ��) ��´�. ���� �� �ּҷ�
DNS �˻��� �Ѵ�. ��� �� �˻��� ���� �� ����.</p>
<p>DNS ������ � �� �˻��� ������ �� ���ٸ�
<code>/etc/hosts</code>�� ȣ��Ʈ�� ������ �� �ִ�.
(��ǻ�Ͱ� ������� ���õǾ��ٸ� �Ƹ� �̹� ����� ��̴�.)
���� DNS�� �����ϸ� ������ <code>/etc/hosts</code>��
����ϴ�� Ȯ���϶�. ����ϴ� �ü���� ����
<code>/etc/resolv.conf</code> Ȥ�� <code>/etc/nsswitch.conf</code>��
�����ϸ� �� ��̴�.</p>
<p>������ � ��������� DNS�� �˻��ϸ� �ȵȴٸ�
<code>HOSTRESORDER</code> ȯ�溯���� "local"�� �����ϰ�
����ġ�� ������ �� �ִ�. <code class="module"><a href="./mod/mod_env.html">mod_env</a></code>��
����Ͽ� ȯ�� ������� �ʴ´ٸ� �� ȯ�溯����
CGI���� ���� �ش�. �ü���� manpage�� FAQ�� ����ϴ�
��� ����.</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">�� ������ ���ϱ��� �</a></h2>
<ul>
<li>
<code class="directive"><a href="./mod/core.html#virtualhost">VirtualHost</a></code>�� IP
�ּҸ� ����϶�
</li>
<li>
<code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code>��
IP �ּҸ� ����϶�
</li>
<li>
��� ����ȣ��Ʈ�� ��������
<code class="directive"><a href="./mod/core.html#servername">ServerName</a></code>��
������ �϶�
</li>
<li>� ������ ��������ʴ�
<code><VirtualHost _default_:*></code> ������
������</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">�η�: ����δ�</a></h2>
<p>DNS�� ���õ� ��Ȳ�� �ſ� �ٶ������ ���ϴ�. ����ġ 1.2����
�츮�� DNS�� ������ ��쿡�� �ּ��� ������ ������� ��������
���� ������. ��·�� ������Ͽ� ���� IP �ּҸ� �䱸�ϴ�
��� ��ȣ�� �ٽ� �����ؾ��� ��� ���ͳݿ� �ſ� �ٶ������
���ϴ�.</p>
<p>������ ������ ������ ����� ���� �Ѱ��� ���� �˻���
IP �ּҿ� �ٽ� ��DNS �˻��� �Ͽ� �� �̸��� ���ϴ� ��̴�.
���� �ٸ� ��� ����ȣ��Ʈ�� ������� ��� �� �ִ�. �� ����
��DNS�� �ùٷ� �����Ǿ� �Ѵ�. (FTP ������ TCP wrapper��
"�ߺ�-��" DNS �˻��� ��� ����ϱ���� ��κ�� �����ڿ���
�ͼ��� ��̴�.)</p>
<p>��·�� IP �ּҸ� ����������� DNS�� ������ ��� ����ȣ��Ʈ
�������� ��� �� �ְ� ����� �� ����. ������ �Ϻθ� �����ϴ�
�Ͱ� ���� �κ���� �ذ�å�� ������ ��ü�� �������ʴ� �ͺ���
�� ���� ���� �ִ�.</p>
<p>HTTP/1.1�� ���� ������ ��Ͻð� <code>Host</code>
���� ������ �������Ƿ� IP��� ����ȣ��Ʈ�� ����
�������ʴ� ��� ������� ��̴�. ���� �������� �����߿���
DNS �˻��� �� �ʿ䰡 ������. ���� 1997�� 3������ �߿���
�������� ����� ������ �̸���� ����ȣ��Ʈ�� �θ� �����
�ʾҴ�.</p>
</div></div>
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