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+# 1.基本知识
+
+1.HTTP服务配置
+
+​	通过启用http、https服务,管理员可以通过浏览器访问设备的web管理界面,实现图形化配置与监控。
+
+2.DNS服务配置
+
+​	将用户输入的域名(如www.example.com)自转换为对应的IP地址,实现网络资源访问。
+
+3.Email服务配置
+
+​	通过SMTP/POP3/IMAP协议,支持局域网内PC端用户互相发送和接收邮件。
+
+ - SMTP协议 单向发送 中转服务器暂存
+ - POP3 单向下载 本地设备存储
+ - IMAP 双向同步 服务器集中存储
+
+4.TFTP服务配置
+
+
+
+# 2. HTTP DNS EMAIl 
+
+### 1. HTTP服务配置与DNS
+
+![image-20250429141824582](https://gitee.com/linyuqian/images/raw/master/picgo-images/http-h.png)
+
+![image-20250429141755344](https://gitee.com/linyuqian/images/raw/master/picgo-images/http-dns.png)
+
+![image-20250429141908865](https://gitee.com/linyuqian/images/raw/master/picgo-images/http-pc.png)
+
+![image-20250429141720305](https://gitee.com/linyuqian/images/raw/master/picgo-images/httpsu.png)
+
+
+
+
+
+### 2.Email 与 DNS
+
+![image-20250429172928858](https://gitee.com/linyuqian/images/raw/master/picgo-images/em.png)
+
+![image-20250429173002889](https://gitee.com/linyuqian/images/raw/master/picgo-images/em-dns.png)
+
+![image-20250429173045800](https://gitee.com/linyuqian/images/raw/master/picgo-images/em-pc.png)
+
+![image-20250429173156258](https://gitee.com/linyuqian/images/raw/master/picgo-images/em-pc12.png)
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://gitee.com/level-23-cloud2/computer-network-basic/pulls/750.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://gitee.com/level-23-cloud2/computer-network-basic/pulls/750.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>