V2EX known hosts

Known Hosts

释义 Definition

known hosts 通常指在 SSH 等远程连接工具中保存的“已知主机”列表:记录你曾连接过的服务器(主机)身份信息(常见为主机公钥指纹),用于在再次连接时校验对方身份、提示主机密钥变更风险,帮助防范中间人攻击。该短语也可泛指“已知/可信的主机集合”。

发音 Pronunciation (IPA)

/non hosts/

例句 Examples

I added the server to my known hosts.
我把这台服务器加入了已知主机列表。

If the host key changes, SSH may warn you because it no longer matches the entry in known hosts.
如果主机密钥发生变化,SSH 可能会发出警告,因为它与已知主机中的记录不再匹配。

词源 Etymology

known 来自 know(知道、识别),表示“已知的”;host 在计算机语境中指“主机/服务器”。合起来的 known hosts 最早广泛见于网络与安全工具的术语用法,尤其与 SSH 的主机身份校验机制相关(如 known_hosts 文件名)。

相关词 Related Words

文学与著名作品用例 Literary & Notable Works

  • SSH, The Secure Shell: The Definitive Guide(Daniel J. Barrett 等):讨论 SSH 主机密钥校验与 known_hosts 机制。
  • OpenSSH Cookbook(various authors/editions):在配置与排错章节中常提到 known_hosts/known hosts
  • The Linux Command Line(William Shotts):在 SSH 与远程连接相关内容中涉及已知主机与密钥提示。
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