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margin-top: -11px;"> <div class="m z"> <div id="userinfo827_ma"></div> </div> <div class="i y"> <div> <strong><a href="space-uid-1.html" target="_blank" class="xi2">职起网</a></strong> <em>当前离线</em> </div><dl class="cl"> <dt>积分</dt><dd><a href="home.php?mod=space&uid=1&do=profile" target="_blank" class="xi2">4536</a></dd> </dl><div class="imicn"> <a href="home.php?mod=space&uid=1&do=profile" target="_blank" title="查看详细资料"><img src="static/image/common/userinfo.gif" alt="查看详细资料" /></a> </div> <div id="avatarfeed"><span id="threadsortswait"></span></div> </div> </div> <div> </div> </div> </td> <td class="plc"> <div class="pi"> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon827" src="static/image/common/online_admin.gif" /> <em id="authorposton827">发表于 2023-11-3 09:26</em> <span class="pipe">|</span> <a href="thread-2318-1-1.html" rel="nofollow">显示全部楼层</a> <span class="pipe show">|</span><a href="javascript:;" onclick="readmode($('thread_subject').innerHTML, 827);" class="show">阅读模式</a> </div> </div> </div><div class="pct"><style type="text/css">.pcb{margin-right:0}</style><div class="pcb"> <div class="typeoption"> <table summary="分类信息" cellpadding="0" cellspacing="0" class="cgtl mbm"> <caption>Linux</caption> <tbody><tr> <th>Linux 私房菜:</th> <td>服务器 » 二.主机的简易防火措施 » 10.申请合法的主机名 </td> </tr> </tbody> </table> </div> <div class="t_fsz"><table cellspacing="0" cellpadding="0"> <tr> <td class="t_f" id="postmessage_827"> <font size="4"><strong>重点回顾</strong></font><br /> <ul><li>主机名的目的在辅助人们记忆 TCP/IP 的 IP 数值；<li>主机名与 IP 的对应，由早期的 /etc/hosts 变更为 DNS 系统来记录<li>合法的主机名必须要透过合法授权后，才能够在 Internet 上面完整的生效<li>除了静态的主机名与 IP 对应外，若是不固定 IP 的联机模式，可以透过动态 DNS 服务，来达成非固定 IP 永远指向同一个主机名的任务。<br /> </ul><br /> <br /> <br /> <br /> <font size="4"><strong>本章习题</strong></font><br /> <ul><li>请简易说明 /etc/hosts 的用途；[jzsjiale_fold=答案]这个档案是早期用在进行主机名与 IP 的解析的，目前比较常用在内部私有网域的名称解析上，可以加快内部网域的反查喔！[/jzsjiale_fold]<li>请说明『合法授权』的主机名需要做什么？[jzsjiale_fold=答案]如果想要合法授权，就需要向上层 DNS 主机『注册』才行！而且还要上层 DNS 主机管理员愿意将领域名的解析权限授权给你啊！[/jzsjiale_fold]<li>什么是动态 DNS 系统？[jzsjiale_fold=答案](仅说明 client 端)因为我们的 Client 拨接时，得到的 IP 都不是固定的，所以无法以 DNS 系统进行固定 IP 对应主机名的工作！ 此时就需要动态 DNS 系统了！以 DNS 主机提供的动态更新主机名对应 IP 的机制，可以让我们的不同 IP 对应到同一个主机名吶！[/jzsjiale_fold]<li>如果你使用 adsl 拨接来上网设定服务器，那么该申请哪一类型的主机名？[jzsjiale_fold=答案]为什么？因为我是以 ADSL 上网拨接，所以 IP 是不固定的，此时需要申请动态 DNS 主机的主机名，例如 no-ip.org 等等！[/jzsjiale_fold]<br /> </ul><br /> <br /> <br /> <br /> <br /> <font size="4"><strong>参考数据与延伸阅读</strong></font><br /> <ul><li>台湾网络信息中心：<a href="http://www.twnic.net/" target="_blank">http://www.twnic.net/</a><li>国外的领域名系统：<a href="http://www.netsol.com/" target="_blank">http://www.netsol.com/</a><li>国外的领域名系统：<a href="http://www.dotster.com/" target="_blank">http://www.dotster.com/</a><li>国外的免费 DNS 系统：<a href="http://www.no-ip.com" target="_blank">http://www.no-ip.com</a><br /> </ul><br /> <br /> <br /> <br /> </td> </tr> </table> </div> <div id="comment_827" class="cm"> </div> <div id="post_rate_div_827"></div> </div> </div> </td></tr> <tr><td class="plc plm"> </td> </tr> <tr id="_postposition827"></tr> <tr> <td class="pls"></td> <td class="plc" style="overflow:visible;"> <div class="po hin"> <div class="pob cl"> <em> <a class="fastre" href="forum.php?mod=post&action=reply&fid=59&tid=2318&reppost=827&extra=page%3D1&page=1" onclick="showWindow('reply', this.href)">回复</a> </em> <p> <a href="javascript:;" onclick="showWindow('miscreport827', 'misc.php?mod=report&rtype=post&rid=827&tid=2318&fid=59', 'get', -1);return false;">举报</a> </p> </div> </div> </td> </tr> <tr class="ad"> <td class="pls"> </td> <td class="plc"> </td> </tr> </table> </div><div id="postlistreply" class="pl"><div id="post_new" class="viewthread_table" style="display: none"></div></div> </div> <form method="post" autocomplete="off" name="modactions" id="modactions"> <input type="hidden" name="formhash" value="b1c8add5" /> <input type="hidden" name="optgroup" /> <input type="hidden" name="operation" /> <input type="hidden" name="listextra" value="page%3D1" /> <input type="hidden" name="page" value="1" /> </form> <div class="pgs mtm mbm cl"> <span class="pgb y"><a href="forum-59-1.html">返回列表</a></span> <a id="newspecialtmp" onmouseover="$('newspecial').id = 'newspecialtmp';this.id = 'newspecial';showMenu({'ctrlid':this.id})" onclick="location.href='forum.php?mod=post&action=newthread&fid=59';return false;" href="javascript:;" title="发新帖" class="pgsbtn showmenu">发新帖</a> </div> <!--[diy=diyfastposttop]--><div id="diyfastposttop" class="area"></div><!--[/diy]--> </div> <div class="wp mtn"> <!--[diy=diy3]--><div id="diy3" class="area"></div><!--[/diy]--> </div> <script type="text/javascript"> function succeedhandle_followmod(url, msg, values) { var fObj = $('followmod_'+values['fuid']); 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