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wiki/sources/Ubuntu-24.04-enable-SSH.md
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---
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title: "Ubuntu 24.04 enable SSH"
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type: source
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tags: [ssh, ubuntu, 运维]
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date: 2025-10-01
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---
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## Source File
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- [[raw/Home Office/Ubuntu 24.04 enable SSH.md]]
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## Summary
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- 核心主题:在 Ubuntu 24.04 中启用 OpenSSH Server
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- 问题域:服务器远程访问配置
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- 方法/机制:apt 安装 openssh-server,systemctl 管理服务,UFW 防火墙配置
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- 结论/价值:Ubuntu 24.04 默认使用 socket 激活模式,需要额外配置才能实现开机自启
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## Key Claims
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- Ubuntu 24.04 默认使用 ssh.socket 激活机制(按需启动),而非传统 ssh.service
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- 安装命令:`sudo apt install openssh-server -y`
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- 启用开机自启:`sudo systemctl enable ssh`(会启用 socket 模式)
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- 如需切换回传统模式:先 disable ssh.socket,再 enable ssh.service
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- 自定义端口建议通过 `sudo systemctl edit ssh.socket` 修改,而非仅修改 sshd_config
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## Key Quotes
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> "24.04 默认使用 Socket 激活模式" — Ubuntu 24.04 SSH 管理的关键变化
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## Key Concepts
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- [[OpenSSH]]:SSH 协议的开源实现
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- [[Socket 激活]]:按需启动服务的机制
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- [[UFW]]:Ubuntu 防火墙管理工具
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## Key Entities
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- [[Ubuntu]]:Linux 发行版
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## Connections
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- [[Ubuntu]] ← installs ← [[OpenSSH]]
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- [[UFW]] ← controls ← [[OpenSSH]]
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## Contradictions
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- 无
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