• ssh远程登录出现Host key verification failed.解决办法


    今天通过ssh和域名连接主机:

    IcarusdeMacBook-Pro:~ icarus$ ssh root@icarusyu.me

    出现了如下错误:

    @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
    @       WARNING: POSSIBLE DNS SPOOFING DETECTED!          @
    @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
    The ECDSA host key for icarusyu.me has changed,
    and the key for the corresponding IP address 165.227.52.49
    is unchanged. This could either mean that
    DNS SPOOFING is happening or the IP address for the host
    and its host key have changed at the same time.
    Offending key for IP in /Users/icarus/.ssh/known_hosts:4
    @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
    @    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
    @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
    IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
    Someone could be eavesdropping on you right now (man-in-the-middle attack)!
    It is also possible that a host key has just been changed.
    The fingerprint for the ECDSA key sent by the remote host is
    SHA256:dcs240xWGNTvHg1qUkrkg4Pzb1pYzCgzghTHlEG+uZ0.
    Please contact your system administrator.
    Add correct host key in /Users/icarus/.ssh/known_hosts to get rid of this message.
    Offending ECDSA key in /Users/icarus/.ssh/known_hosts:3
    ECDSA host key for icarusyu.me has changed and you have requested strict checking.
    Host key verification failed.
    

     提示中出现了关键信息:

    Add correct host key in /Users/icarus/.ssh/known_hosts to get rid of this message.
    Offending ECDSA key in /Users/icarus/.ssh/known_hosts:3
    

      原因是在主机子系统每次成功ssh连接远程操作,都会把你每个你访问过计算机的公钥(public key)都记录在主机的目录/Users/icarus/.ssh/known_hosts下,当下次访问相同子机服务器时,会核对公钥。如果公钥不同,会发出警告,避免你受到DNS Hijack之类的攻击。

    解决办法:

    进入目录删除文件即可,然后重新连接就能发现连接上了。

    IcarusdeMacBook-Pro:~ icarus$ cd ~/.ssh/
    IcarusdeMacBook-Pro:.ssh icarus$ ls
    known_hosts	known_hosts.old
    IcarusdeMacBook-Pro:.ssh icarus$ rm known_hosts
    IcarusdeMacBook-Pro:.ssh icarus$ ssh root@icarusyu.me
    The authenticity of host 'icarusyu.me (165.227.52.49)' can't be established.
    ECDSA key fingerprint is SHA256:dcs240xWGNTvHg1qUkrkg4Pzb1pYzCgzghTHlEG+uZ0.
    Are you sure you want to continue connecting (yes/no)? yes
    Warning: Permanently added 'icarusyu.me,165.227.52.49' (ECDSA) to the list of known hosts.
    root@icarusyu.me's password: 
    Welcome to Ubuntu 16.04.4 LTS (GNU/Linux 4.4.0-116-generic x86_64)
    
     * Documentation:  https://help.ubuntu.com
     * Management:     https://landscape.canonical.com
     * Support:        https://ubuntu.com/advantage
    
      Get cloud support with Ubuntu Advantage Cloud Guest:
        http://www.ubuntu.com/business/services/cloud
    

      

      

  • 相关阅读:
    6大集合类
    数据导出到Excel/Word 防止出现乱码仅有一行数据导出的时候
    bootmgr is compressed 解决办法 汇总
    RAID 独立磁盘真阵列
    C# 和 Js 取出时间间隔
    Image 获取缩略图
    ConvertJSONDateToJSDateObject 方法实现json格式时间串转换为 对应的时间格式串
    纯js脚本的模式对话框
    癌症的IARC分级
    微信小程序如何在页面间传值
  • 原文地址:https://www.cnblogs.com/IcarusYu/p/8621699.html
Copyright © 2020-2023  润新知