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我想将 ssh 端口从22更改为2800。我尝试更改/etc/ssh/ssh_config并从 Port 行中删除#并将数字更改为2800。触发命令后：service ssh restart连接继续。当我尝试从端口2800连接时，它拒绝了。内容/etc/ssh/ssh_config是：删除了注释行

Host *
Port 2800
    SendEnv LANG LC_*
    HashKnownHosts yes
    GSSAPIAuthentication yes
    GSSAPIDelegateCredentials no

该命令service ssh status提供以下输出：

? ssh.service - OpenBSD Secure Shell server
   Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2017-09-22 20:31:45 IRST; 1s ago
 Main PID: 1825 (sshd)
    Tasks: 1
   Memory: 724.0K
      CPU: 5ms
   CGroup: /system.slice/ssh.service
           ??1825 /usr/sbin/sshd …