putty错误一例——Network error: no router to host

在用Putty连接redhat4时，弹出错误窗口显示：Network error: no router to host

解决方法是，用root用户登录，将iptables关闭：
[oranix@localhost ~]$ id
uid=500(oranix) gid=500(oranix) groups=500(oranix) context=user_u:system_r:unconfined_t
[oranix@localhost ~]$ su -
Password:
[root@localhost ~]# service iptables stop
Flushing firewall rules:                                   [  OK  ]
Setting chains to policy ACCEPT: filter                    [  OK  ]
Unloading iptables modules:                                [  OK  ]
[root@localhost ~]#

这样就可以正常登录了。