LINUX(redhat 7.0)openssh-server
来源:互联网 发布:社会化传播矩阵 编辑:程序博客网 时间:2024/06/07 20:59
9.openssh-server
1.openssh-server
功能:让远程主机可以通过网络访问sshd服务,开始一个安全shell
2.客户端连接方式
ssh 远程主机用户@远程主机ip
[root@desktop0 ~]# ssh root@172.25.0.11
The authenticity of host ‘172.25.0.11 (172.25.0.11)’ can’t be established.
ECDSA key fingerprint is eb:24:0e:07:96:26:b1:04:c2:37:0c:78:2d:bc:b0:08.
Are you sure you want to continue connecting (yes/no)? yes ##连接陌生主机时需要建立认证关系
Warning: Permanently added ‘172.25.0.11’ (ECDSA) to the list of known hosts.
root@172.25.0.11’s password: ##远程用户密码
Last login: Mon Oct 3 03:13:47 2016
[root@server0 ~]# ##登陆成功
ssh 远程主机用户@远程主机ip -X ##调用远程主机图形工具
ssh 远程主机用户@远程主机ip command ##直接在远程主机运行某条命令
3.sshkey加密
1.生成公钥私钥
[root@server0 ~]# ssh-keygen ##生成公钥私钥工具
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):[enter] ##加密字符保存文件(建议用默认)
Created directory ‘/root/.ssh’.
Enter passphrase (empty for no passphrase): [enter] ##密钥密码,必须>4个字符
Enter same passphrase again: [enter] ##确认密码
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
ab:3c:73:2e:c8:0b:75:c8:39:3a:46:a2:22:34:84:81 root@server0.example.com
The key’s randomart image is:
+–[ RSA 2048]—-+
|o |
|E. |
|.. |
|. . o |
|.o. * . S |
|oo.o o . |
|+ =. . . |
|o. oo.+.. |
| ..o*. |
+—————–+
[root@server0 ~]# ls /root/.ssh/
id_rsa id_rsa.pub
id_rsa ##私钥,就是钥匙
id_rsa.pub ##公钥,就是锁
2.添加key认证方式
[root@server0 ~]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@172.25.0.11
ssh-copy-id ##添加key认证方式的工具
-i ##指定加密key文件
/root/.ssh/id_rsa.pub ##加密key
root ##加密用户为root
172.25.0.11 ##被加密主机ip
3.分发钥匙给client主机
[root@server0 ~]# scp /root/.ssh/id_rsa root@172.25.0.10:/root/.ssh/
4.测试
[root@desktop0 ~]# ssh root@172.25.0.11 ##通过id_rsa直接连接不需要输入用户密码
Last login: Mon Oct 3 03:58:10 2016 from 172.25.0.250
[root@server0 ~]#
4.提升openssh的安全级别
1.openssh-server配置文件
/etc/ssh/sshd_config
78 PasswordAuthentication yes|no ##是否开启用户密码认证,yes为支持no为关闭
48 PermitRootLogin yes|no ##是否允许超级用户登陆
49 AllowUsers student westos ##用户白名单,只有在名单中出现的用户可以使用sshd建立shell
50 DenyUsers westos ##用户黑名单
- LINUX(redhat 7.0)openssh-server
- linux基础(八)openssh-server
- Linux安装OpenSSH Server
- openssh-server (sshd)
- linux下安装openssh-server
- Configuring Fedora Linux Remote Access using SSH (openssh-server, openssh)
- Ubuntu Linux OpenSSH Server installation and configuration
- Linux--RH124---unit 9 openssh-server
- 文档总结9-linux中的openssh-server
- openssh-server
- openssh-server
- openssh-server
- openssh-server
- openssh-server
- openssl+openssh源码升级详细配置(Redhat)
- LINUX(redhat 7.0 ) man
- VMware Linux RedHat 9.0 tftp server配置(修改)
- Linux使用技巧11--Ubuntu离线安装openssh-server
- 将Source Insight里面着色代码拷贝到word里面的方法
- 把本地jar包导入本地maven仓库
- 数值交换
- table不被撑开,格子均匀大小
- redis集群配置及运行命令(windows和centos)附Python测试范例代码
- LINUX(redhat 7.0)openssh-server
- 获取系统信息
- ImageMagick开源项目-命令文档-convert
- 注册的在线人数/统计在线人数/网站总访问量
- 547. Friend Circles【用warshall算法求解】
- Java 并发开发:Lock 框架详解
- 打开/关闭侧栏
- 随便一写 , 一些常用ssl框架sql 语句
- Android 7.0 IMS框架详解