红帽linux如何开启sshd服务 UBUNTU下如何开启SSHD服务

linux sshd\u670d\u52a1\u600e\u4e48\u542f\u52a8

Ubuntu\u7f3a\u7701\u5b89\u88c5\u4e86openssh-client,\u6240\u4ee5\u5728\u8fd9\u91cc\u5c31\u4e0d\u5b89\u88c5\u4e86\uff0c\u5982\u679c\u4f60\u7684\u7cfb\u7edf\u6ca1\u6709\u5b89\u88c5\u7684\u8bdd\uff0c\u518d\u7528apt-get\u5b89\u88c5\u4e0a\u5373\u53ef\u3002
\u7136\u540e\u786e\u8ba4sshserver\u662f\u5426\u542f\u52a8\u4e86\uff1a
ps -e |grep ssh
\u5982\u679c\u53ea\u6709ssh-agent\u90a3ssh-server\u8fd8\u6ca1\u6709\u542f\u52a8\uff0c\u9700\u8981/etc/init.d/ssh start\uff0c\u5982\u679c\u770b\u5230sshd\u90a3\u8bf4\u660essh-server\u5df2\u7ecf\u542f\u52a8\u4e86\u3002
ssh-server\u914d\u7f6e\u6587\u4ef6\u4f4d\u4e8e/ etc/ssh/sshd_config\uff0c\u5728\u8fd9\u91cc\u53ef\u4ee5\u5b9a\u4e49SSH\u7684\u670d\u52a1\u7aef\u53e3\uff0c\u9ed8\u8ba4\u7aef\u53e3\u662f22\uff0c\u4f60\u53ef\u4ee5\u81ea\u5df1\u5b9a\u4e49\u6210\u5176\u4ed6\u7aef\u53e3\u53f7\uff0c\u5982222\u3002\u7136\u540e\u91cd\u542fSSH\u670d\u52a1\uff1a
sudo /etc/init.d/ssh resar
ssh\u8fde\u63a5\uff1assh [email protected]
\u9996\u5148\u5728\u670d\u52a1\u5668\u4e0a\u5b89\u88c5ssh\u7684\u670d\u52a1\u5668\u7aef\u3002
$ sudo aptitude install openssh-server
2. \u542f\u52a8ssh-server\u3002
$ /etc/init.d/ssh restart
3. \u786e\u8ba4ssh-server\u5df2\u7ecf\u6b63\u5e38\u5de5\u4f5c\u3002
$ netstat -tlp
tcp6 0 0 *:ssh *:* LISTEN -
\u770b\u5230\u4e0a\u9762\u8fd9\u4e00\u884c\u8f93\u51fa\u8bf4\u660essh-server\u5df2\u7ecf\u5728\u8fd0\u884c\u4e86\u3002
4. \u5728\u5ba2\u6237\u7aef\u901a\u8fc7ssh\u767b\u5f55\u670d\u52a1\u5668\u3002\u5047\u8bbe\u670d\u52a1\u5668\u7684IP\u5730\u5740\u662f192.168.0.103\uff0c\u767b\u5f55\u7684\u7528\u6237\u540d\u662fhyx\u3002

sudo apt-get install openssh-server

Ubuntu\u7f3a\u7701\u5b89\u88c5\u4e86openssh-client,\u6240\u4ee5\u5728\u8fd9\u91cc\u5c31\u4e0d\u5b89\u88c5\u4e86\uff0c\u5982\u679c\u4f60\u7684\u7cfb\u7edf\u6ca1\u6709\u5b89\u88c5\u7684\u8bdd\uff0c\u518d\u7528apt-get\u5b89\u88c5\u4e0a\u5373\u53ef\u3002
\u7136\u540e\u786e\u8ba4sshserver\u662f\u5426\u542f\u52a8\u4e86\uff1a

ps -e |grep ssh

\u5982\u679c\u53ea\u6709ssh-agent\u90a3ssh-server\u8fd8\u6ca1\u6709\u542f\u52a8\uff0c\u9700\u8981/etc/init.d/ssh start\uff0c\u5982\u679c\u770b\u5230sshd\u90a3\u8bf4\u660essh-server\u5df2\u7ecf\u542f\u52a8\u4e86\u3002

ssh-server\u914d\u7f6e\u6587\u4ef6\u4f4d\u4e8e/ etc/ssh/sshd_config\uff0c\u5728\u8fd9\u91cc\u53ef\u4ee5\u5b9a\u4e49SSH\u7684\u670d\u52a1\u7aef\u53e3\uff0c\u9ed8\u8ba4\u7aef\u53e3\u662f22\uff0c\u4f60\u53ef\u4ee5\u81ea\u5df1\u5b9a\u4e49\u6210\u5176\u4ed6\u7aef\u53e3\u53f7\uff0c\u5982222\u3002\u7136\u540e\u91cd\u542fSSH\u670d\u52a1\uff1a

sudo /etc/init.d/ssh resar

ssh\u8fde\u63a5\uff1assh [email protected]

1. \u9996\u5148\u5728\u670d\u52a1\u5668\u4e0a\u5b89\u88c5ssh\u7684\u670d\u52a1\u5668\u7aef\u3002

$ sudo aptitude install openssh-server

2. \u542f\u52a8ssh-server\u3002

$ /etc/init.d/ssh restart

3. \u786e\u8ba4ssh-server\u5df2\u7ecf\u6b63\u5e38\u5de5\u4f5c\u3002

$ netstat -tlp

tcp6 0 0 *:ssh *:* LISTEN -

\u770b\u5230\u4e0a\u9762\u8fd9\u4e00\u884c\u8f93\u51fa\u8bf4\u660essh-server\u5df2\u7ecf\u5728\u8fd0\u884c\u4e86\u3002

4. \u5728\u5ba2\u6237\u7aef\u901a\u8fc7ssh\u767b\u5f55\u670d\u52a1\u5668\u3002\u5047\u8bbe\u670d\u52a1\u5668\u7684IP\u5730\u5740\u662f192.168.0.103\uff0c\u767b\u5f55\u7684\u7528\u6237\u540d\u662fhyx\u3002

$ ssh -l hyx 192.168.0.103

\u63a5\u4e0b\u6765\u4f1a\u63d0\u793a\u8f93\u5165\u5bc6\u7801\uff0c\u7136\u540e\u5c31\u80fd\u6210\u529f\u767b\u5f55\u5230\u670d\u52a1\u5668\u4e0a\u4e86

一、查询SSH服务是否安装。

1、登陆linux系统,打开终端命令。输入 rpm -qa |grep ssh 查找当前系统是否已经安装。

2、如果没有安装SSH软件包,可以通过yum  或rpm安装包进行安装。

二、启动SSH服务。

1、安装好了之后,Ssh服务一般叫做 sshd,命令行输入service sshd start可以启动 。

2、或者使用 /etc/init.d/sshd start

三、配置查看SSHD端口

1、查看或编辑SSH服务配置文件,如 vi /etc/ssh/sshd.config   如果要修改端口,把 port 后面默认的22端口改成别的端口即可(注意前面的#号注释掉)。



楼上各位都是旧版Centos7的命令了,
现在新版CentOS8 命令改为/bin/systemctl start ssh.service

排除问题的步骤:
1、确认你的服务器上是否安装有sshd服务,并且是否开启
如果没安装
然后setup,勾选sshd服务让其自动启动
2、查看ssh服务是否做了限制(针对root)
vi /etc/ssh/sshd_config
PermitRootLogin no
如果有将其注释掉,在前面加上#即可,默认应该是PermitRootLogin yes且注释掉的。
3、查看防火墙是否做了限制
查看iptables -L
清空配置 iptables -F

service sshd start
然后setup,勾选sshd服务让其自动启动
其他的配置网上一搜一大堆·············

1、检查有没有安装

2、开机自动启动
chkconfig sshd on

3、关掉防火墙看看
chkconfig iptables off

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