使用软件： putty
虚拟机都使用 NAT 这样他们处于 一个网段中
linux 下 ifcondif 查看IP
XP 下 ipconfig 查看IP
linux 下查看 用户 密码等 cat /etc/passwd
问题：
使用putty登录显示network error:Connection refused 或者显示network error:Connection timeout
解决方法：
1.vi /etc/ssh/sshd_config 将PermitRootLogin的注释取消，或者将no改为yes。(如果没有sshd_config文件说明linux上没有安装SSH，使用 yum -y install ssh安装之后，sshd-config文件中PermitRootLogin选项默认的是yes，新安装的ssh不用操作下面两部)
2.
root@bt:~# /etc/init.d/ssh restart
Could not load host key: /etc/ssh/ssh_host_rsa_key
Could not load host key: /etc/ssh/ssh_host_dsa_key
* Restarting OpenBSD Secure Shell server sshd Could not load host key: /etc/ssh/ssh_host_rsa_key
Could not load host key: /etc/ssh/ssh_host_dsa_key
解决方法：
root@bt:~# ssh-keygen -t rsa -b 2048 -f /etc/ssh/ssh_host_rsa_key
Generating public/private rsa key pair.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /etc/ssh/ssh_host_rsa_key.
Your public key has been saved in /etc/ssh/ssh_host_rsa_key.pub.
The key fingerprint is:
85:e6:83:c5:a9:91:0d:8e:2a:6b:b1:e5:7b:db:d3:b2 root@bt
The key's randomart image is:
+--[ RSA 2048]----+
| . |
| o = o |
| . + B . |
| . B . |
|.... o S |
| o= . |
|.o . . |
|. ...o . |
| ....E+ |
+-----------------+
root@bt:~# ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
Generating public/private dsa key pair.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /etc/ssh/ssh_host_dsa_key.
Your public key has been saved in /etc/ssh/ssh_host_dsa_key.pub.
The key fingerprint is:
bc:0d:45:c8:62:85:c4:6e:a2:90:e4:3b:e4:38:8a:35 root@bt
The key's randomart image is:
+--[ DSA 1024]----+
| o.+... |
| . = o. |
|o. o . . |
|oo . o. . |
|+... o S |
|o+E + |
|oo.. . . |
|o |
| |
+-----------------+
3.service iptables stop命令进入将防火墙关闭。
最后 登陆 用 root 账户登陆
另外 更新 MSF ： http://blog.chinaunix.net/uid-13344516-id-3597709.html