V2EX default gateway

Default Gateway

定义 Definition

默认网关:在计算机网络中,当设备要访问不在本地子网(LAN)内的目标地址时,数据包会被发送到的首选路由器/出口(通常是路由器的局域网接口 IP)。它相当于“走出本地网络的默认出口”。

发音 Pronunciation (IPA)

/dflt etwe/

例句 Examples

My laptop can’t reach the internet because the default gateway is wrong.
我的笔记本无法上网,因为默认网关设置错了。

In a larger office network, each subnet may use a different default gateway to route traffic securely through firewalls and core routers.
在较大的办公网络中,每个子网可能使用不同的默认网关,以便把流量安全地通过防火墙和核心路由器进行转发。

词源 Etymology

default 原意是“默认的、预设的”,在计算机语境中指“未特别指定时采用的设置”;gateway 原意是“门口、入口/出口”,在网络里引申为“连接两个网络的出入口设备或功能”。合起来 default gateway 就是“默认的网络出口/下一跳”。

相关词 Related Words

文学与作品 Literary Works

  • TCP/IP Illustrated, Volume 1: The Protocols(W. Richard Stevens)
  • Computer Networking: A Top-Down Approach(Kurose & Ross)
  • UNIX and Linux System Administration Handbook(Nemeth 等)
  • Microsoft Windows 官方文档与管理员指南(网络设置/故障排查章节常出现该术语)
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