Ubuntu 20.04 - 安装、启用 OpenSSH 服务端
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Ubuntu 系统信息:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.3 LTS
Release: 20.04
Codename: focal
安装 OpenSSH 服务端
在 Ubuntu 操作系统中,使用 sudo apt-get install openssh-server
安装 OpenSSH 服务端:
$ sudo apt-get install openssh-server
安装完成,使用 sudo systemctl status sshd
命令查看 OpenSSH 服务端的状态(第 1 行),可知 OpenSSH 服务端已经在运行(第 4 行):
$ sudo systemctl status sshd
● ssh.service - OpenBSD Secure Shell server
Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
Active: active (running) since Mon 2022-02-21 09:09:50 CST; 50s ago
Docs: man:sshd(8)
man:sshd_config(5)
Main PID: 4051 (sshd)
Tasks: 1 (limit: 4588)
Memory: 1.0M
CGroup: /system.slice/ssh.service
└─4051 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups
2月 21 09:09:50 mk-virtual-machine systemd[1]: Starting OpenBSD Secure Shell server...
2月 21 09:09:50 mk-virtual-machine sshd[4051]: Server listening on 0.0.0.0 port 22.
2月 21 09:09:50 mk-virtual-machine sshd[4051]: Server listening on :: port 22.
2月 21 09:09:50 mk-virtual-machine systemd[1]: Started OpenBSD Secure Shell server.
使用 SSH 客户端连接 SSH 服务端
在 Windows 10 操作系统中,打开 PowerShell,使用 ssh -l login_name destination
命令格式连接目标主机:
PS C:\Users\Admin> ssh -l mk 192.168.132.134
The authenticity of host '192.168.132.134 (192.168.132.134)' can't be established.
ECDSA key fingerprint is SHA256:U3XR4lbb5hhSp4fCycZwN/gO5thnzQ7K9EqcQ1HU5zM.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.132.134' (ECDSA) to the list of known hosts.
mk@192.168.132.134's password:
Welcome to Ubuntu 20.04.3 LTS (GNU/Linux 5.13.0-30-generic x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
89 updates can be applied immediately.
1 of these updates is a standard security update.
To see these additional updates run: apt list --upgradable
Your Hardware Enablement Stack (HWE) is supported until April 2025.
The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.
登录成功,查看谁正在登录:
mk@mk-virtual-machine:~$ w
11:28:20 up 2:32, 2 users, load average: 0.00, 0.00, 0.00
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
mk :0 :0 08:56 ?xdm? 44.74s 0.01s /usr/lib/gdm3/gdm-x-session --run-script env GNOME_SHEL
mk pts/1 192.168.132.1 10:51 0.00s 0.03s 0.01s w
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