这次是给天安运维的堡垒机搭建vpn环境，
下载了一个9.0版的secureCRT，然后使用堡垒机登录secureCRT时就是提示如下错误：
The client has disconnected from the server. Reason:
The server's host key failed to verify. This could mean that the server you are connected to is impersonating the server it claims to be. A connection could not be established.
后来下载secureCRT,版本是8.7.0,破解时需要选择secureCRT 8.5.x要不然破解不成功。
再用堡垒机登录secureCRT就可以了，然后需要全局配置个隧道，这样才能正常访问，内网
里的数据库，k8s等服务器的ip。