怎么创建局域网(LAN)

本文教你如何创建局域网(LAN),使连接局域网的计算机和设备之间可以相互通信,并且访问互联网。

部分 1 部分 1 的 3:

确定网络需求

  1. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/a\/af\/Create-a-Local-Area-Network-%28LAN%29-Step-1-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-1-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/a\/af\/Create-a-Local-Area-Network-%28LAN%29-Step-1-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 1 计算需要硬接线的计算机数量。在创建局域网时,你需要知道有多少台计算机将通过以太网连接到网络。这将决定所需的端口数量。
    • 如果需要硬接线的计算机不超过四台,你只需要一个路由器。如果需要硬接线的计算机超过四台,你可能需要一个交换机来扩展路由器上可用端口数量。
  2. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/a\/a8\/Create-a-Local-Area-Network-%28LAN%29-Step-2-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-2-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/a\/a8\/Create-a-Local-Area-Network-%28LAN%29-Step-2-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-2-Version-2.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 2 决定是否要创建无线网络。如果你想让设备进行无线连接,需要一个可以广播无线网络的路由器。在商店或网上找到的路由器大多数都有无线功能。
    • 网络交换机不支持连接无线设备,只能用于硬接线局域网或扩展路由器可用端口的数量。
  3. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/9\/96\/Create-a-Local-Area-Network-%28LAN%29-Step-3-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-3-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/9\/96\/Create-a-Local-Area-Network-%28LAN%29-Step-3-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-3-Version-2.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 3 确定是否希望所有网络设备都能访问互联网。如果你希望所有接入设备都能联网,那就需要用路由器来连接。如果这些设备不需要联网,使用网络交换机就可以了。
  4. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/a\/a6\/Create-a-Local-Area-Network-%28LAN%29-Step-4.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-4.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/a\/a6\/Create-a-Local-Area-Network-%28LAN%29-Step-4.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-4.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 4 测量所有硬接线设备的距离。在大多数家庭中,这并不是什么问题,但是网络电缆不能超过100米。如果电缆超过这个长度,你需要在电缆之间使用交换机。
  5. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/2\/22\/Create-a-Local-Area-Network-%28LAN%29-Step-5-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-5-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/2\/22\/Create-a-Local-Area-Network-%28LAN%29-Step-5-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-5-Version-2.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 5 考虑未来需求。如果硬件上的所有端口都快被塞满了,考虑做长远打算,以便今后可以接入更多设备。
部分 2 部分 2 的 3:

创建基本局域网

  1. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/d\/d2\/Create-a-Local-Area-Network-%28LAN%29-Step-6.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-6.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/d\/d2\/Create-a-Local-Area-Network-%28LAN%29-Step-6.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-6.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 1 备齐所需的硬件。要创建局域网,你需要一个路由器或交换机。作为网络枢纽,这些设备将信息路由至对应的计算机。
    • 路由器会自动为网络中的每台设备分配IP地址,并且如果你打算与所有已连接的设备共享互联网连接,路由器是必要的。即使你没有共享互联网连接,也建议使用路由器构建网络。
    • 网络交换机类似于简化版的路由器。它使连接的设备之间可以相互通信,但是不能自动分配IP地址,也不能分享互联网连接。交换机最适合用于扩展网络上可用的LAN端口数量,因为交换机可以连接路由器。
  2. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/1\/14\/Create-a-Local-Area-Network-%28LAN%29-Step-7.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-7.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/1\/14\/Create-a-Local-Area-Network-%28LAN%29-Step-7.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-7.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 2 设置路由器。基本的局域网不需要做什么路由器设置。只要插上电源,如果你打算通过路由器来共享互联网连接,最好让路由器靠近调制解调器。
  3. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/f\/f4\/Create-a-Local-Area-Network-%28LAN%29-Step-8.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-8.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/f\/f4\/Create-a-Local-Area-Network-%28LAN%29-Step-8.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-8.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 3 将调制解调器连接到路由器(如果需要)。如果你通过调制解调器共享互联网连接,将调制解调器连接到路由器上的WAN/INTERNET端口。该端口颜色通常与其他端口颜色不同。
  4. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/4\/4c\/Create-a-Local-Area-Network-%28LAN%29-Step-9.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-9.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/4\/4c\/Create-a-Local-Area-Network-%28LAN%29-Step-9.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-9.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 4 将调制交换机连接到路由器(如果需要)。如果你使用交换机来扩展路由器上可用端口的数量,将以太网电缆分别插入路由器和交换机上的任何LAN端口。这样可以把网络扩展到交换机上的其他LAN端口。
  5. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/d\/dd\/Create-a-Local-Area-Network-%28LAN%29-Step-10.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-10.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/d\/dd\/Create-a-Local-Area-Network-%28LAN%29-Step-10.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-10.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 5 连接计算机以打开LAN端口。使用以太网电缆将每台计算机连接到路由器或交换机上的LAN端口。端口连接的顺序无关紧要。
    • 长度超过100米后,以太网电缆无法可靠地传输数据。
  6. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/7\/71\/Create-a-Local-Area-Network-%28LAN%29-Step-11-Version-3.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-11-Version-3.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/7\/71\/Create-a-Local-Area-Network-%28LAN%29-Step-11-Version-3.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-11-Version-3.jpg","smallWidth":460,"smallHeight":346,"bigWidth":728,"bigHeight":548,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 6 如果只使用一个交换机,将一台计算机设置为DHCP服务器。如果你只使用交换机作为网络集线器,那么将一台计算机设置为DHCP(动态主机配置协议)服务器,将允许所有连接的计算机轻松获得IP地址。
    • 通过安装第三方实用程序,可以在计算机上快速创建DHCP服务器。
    • 一旦服务器运行,只要计算机经过相应的设置,网络上的其他计算机将自动获得IP地址。
  7. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/c\/cd\/Create-a-Local-Area-Network-%28LAN%29-Step-12-Version-3.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-12-Version-3.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/c\/cd\/Create-a-Local-Area-Network-%28LAN%29-Step-12-Version-3.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-12-Version-3.jpg","smallWidth":460,"smallHeight":344,"bigWidth":728,"bigHeight":545,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 7 验证每台计算机上的网络连接。每台计算机获得IP地址后,便可以在网络上相互通信。如果使用路由器来共享互联网连接,每台计算机都能访问互联网。
  8. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/7\/74\/Create-a-Local-Area-Network-%28LAN%29-Step-13-Version-3.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-13-Version-3.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/7\/74\/Create-a-Local-Area-Network-%28LAN%29-Step-13-Version-3.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-13-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 8 设置文件和打印机共享。当网络建立好了,除非该计算机具有共享文件,否则你无法在其他计算机上看到任何内容。你可以指定共享文件、文件夹、驱动器、打印机和其他设备,方便网络上的任何用户或特定用户访问。
部分 3 部分 3 的 3:

创建无线网络

  1. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/6\/66\/Create-a-Local-Area-Network-%28LAN%29-Step-14.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-14.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/6\/66\/Create-a-Local-Area-Network-%28LAN%29-Step-14.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-14.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 1 设置路由器。设置无线路由器时,你需要记住以下几点:
    • 为了方便故障排除,路由器通常应该靠近调制解调器。
    • 路由器应该位于中心位置,以实现最大的无线覆盖。
    • 在设置过程中,需要通过以太网将计算机连接到路由器。
  2. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/b\/b1\/Create-a-Local-Area-Network-%28LAN%29-Step-15.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-15.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/b\/b1\/Create-a-Local-Area-Network-%28LAN%29-Step-15.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-15.jpg","smallWidth":460,"smallHeight":334,"bigWidth":728,"bigHeight":529,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 2 将计算机插入路由器的一个LAN端口。使用计算机的网页浏览器来配置路由器的无线网络。
  3. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/8\/8f\/Create-a-Local-Area-Network-%28LAN%29-Step-16-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-16-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/8\/8f\/Create-a-Local-Area-Network-%28LAN%29-Step-16-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-16-Version-2.jpg","smallWidth":460,"smallHeight":347,"bigWidth":728,"bigHeight":549,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 3 在计算机上打开一个网页浏览器。可以使用任何网页浏览器。
  4. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/0\/04\/Create-a-Local-Area-Network-%28LAN%29-Step-17-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-17-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/0\/04\/Create-a-Local-Area-Network-%28LAN%29-Step-17-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-17-Version-2.jpg","smallWidth":460,"smallHeight":343,"bigWidth":728,"bigHeight":543,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 4 输入路由器的IP地址。可以在路由器底部或者在路由器文档中找到IP地址。如果找不到,试试以下步骤:
    • Windows:右击单击系统托盘中的“网络”按钮→点击“打开网络和共享中心”→点击“以太网连接”→点击“详细信息”→找到路由器IP地址的“默认网关条目”。
    • Mac:点击Apple菜单并选择“系统偏好设置”→点击“网络”→点击“以太网连接”→找到路由器IP地址的“路由条目”。
  5. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/e\/ed\/Create-a-Local-Area-Network-%28LAN%29-Step-18-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-18-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/e\/ed\/Create-a-Local-Area-Network-%28LAN%29-Step-18-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-18-Version-2.jpg","smallWidth":460,"smallHeight":347,"bigWidth":728,"bigHeight":549,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 5 使用管理员帐户登录。你将会收到提示,要求你输入路由器登录信息。默认登录信息因路由器型号而异,但用户名通常是“admin”,密码通常是“admin”、“password”或空白。
    • 你可以在 https://portforward.com/router-password/ 上查找你的路由器模型,找到默认登录信息。
  6. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/9\/9e\/Create-a-Local-Area-Network-%28LAN%29-Step-19-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-19-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/9\/9e\/Create-a-Local-Area-Network-%28LAN%29-Step-19-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-19-Version-2.jpg","smallWidth":460,"smallHeight":344,"bigWidth":728,"bigHeight":544,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 6 打开路由器设置中的无线网络 部分。该部分的具体位置和名称因路由器而异。
  7. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/1\/1e\/Create-a-Local-Area-Network-%28LAN%29-Step-20-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-20-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/1\/1e\/Create-a-Local-Area-Network-%28LAN%29-Step-20-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-20-Version-2.jpg","smallWidth":460,"smallHeight":348,"bigWidth":728,"bigHeight":550,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 7 SSID字段中更改网络的名称。这个字段也称之为“网络名称”。这是出现在可用无线网络列表中的名称。
  8. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/f\/f6\/Create-a-Local-Area-Network-%28LAN%29-Step-21-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-21-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/f\/f6\/Create-a-Local-Area-Network-%28LAN%29-Step-21-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-21-Version-2.jpg","smallWidth":460,"smallHeight":344,"bigWidth":728,"bigHeight":544,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 8 选择WPA2-Personal作为身份验证或安全选项。这是目前大多数路由器上可用的最安全的选项。避免选择WPA和WEP,除非是不兼容的旧设备有明确要求。
  9. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/4\/4f\/Create-a-Local-Area-Network-%28LAN%29-Step-22-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-22-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/4\/4f\/Create-a-Local-Area-Network-%28LAN%29-Step-22-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-22-Version-2.jpg","smallWidth":460,"smallHeight":344,"bigWidth":728,"bigHeight":544,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 9 创建强密码。连接网络会需要该密码。这个字段可能被标记为“预共享密钥”。
  10. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/4\/49\/Create-a-Local-Area-Network-%28LAN%29-Step-23-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-23-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/4\/49\/Create-a-Local-Area-Network-%28LAN%29-Step-23-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-23-Version-2.jpg","smallWidth":460,"smallHeight":346,"bigWidth":728,"bigHeight":547,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 10 确保无线网络已启用。你可能需要在“无线网络”菜单顶部,选中一个复选框或点击一个按钮来启用无线网络,具体取决于路由器。
  11. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/9\/98\/Create-a-Local-Area-Network-%28LAN%29-Step-24-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-24-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/9\/98\/Create-a-Local-Area-Network-%28LAN%29-Step-24-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-24-Version-2.jpg","smallWidth":460,"smallHeight":347,"bigWidth":728,"bigHeight":549,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 11 单击保存应用按钮。这样可以保存路由器设置变更。
  12. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/5\/5a\/Create-a-Local-Area-Network-%28LAN%29-Step-25-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-25-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/5\/5a\/Create-a-Local-Area-Network-%28LAN%29-Step-25-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-25-Version-2.jpg","smallWidth":460,"smallHeight":344,"bigWidth":728,"bigHeight":545,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 12 等待路由器重新启动。路由器和网络恢复正常可能需要一会儿。
  13. {"smallUrl":"https:\/\/www.zenmeban.com\/images_en\/thumb\/3\/3b\/Create-a-Local-Area-Network-%28LAN%29-Step-26-Version-2.jpg\/v4-460px-Create-a-Local-Area-Network-%28LAN%29-Step-26-Version-2.jpg","bigUrl":"https:\/\/www.zenmeban.com\/images\/thumb\/3\/3b\/Create-a-Local-Area-Network-%28LAN%29-Step-26-Version-2.jpg\/v4-728px-Create-a-Local-Area-Network-%28LAN%29-Step-26-Version-2.jpg","smallWidth":460,"smallHeight":343,"bigWidth":728,"bigHeight":543,"licensing":"<div class=\"mw-parser-output\"><\/div>"} 13 在无线设备上连接无线网络。一旦网络恢复正常,就会出现在网络覆盖范围内任何无线设备的可用网络列表中。当连接网络时,用户会被提示输入你创建的密码。
    • 通过以太网连接到路由器的计算机不需要密码。

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