从第三方计算机ssh访问Puppet Learning VM失败

Question

我正在学习木偶，我在Windows桌面上安装了木偶学习VM。现在我可以使用putty从我的桌面（主机）ssh访问puppet VM。但即使我可以ping它，我也无法从另一台Linux机器上访问它。有人可以帮我找到原因吗？谢谢！

[root@redhat89178 v62]# ping 172.29.38.89
PING 172.29.38.89 (172.29.38.89) 56(84) bytes of data.
64 bytes from 172.29.38.89: icmp_seq=1 ttl=60 time=37.1 

[root@redhat89178 v62]# ssh !$
ssh 172.29.38.89
ssh: connect to host 172.29.38.89 port 22: Connection timed out
You have new mail in /var/spool/mail/root