The requested URL could not be retrieved

ERROR

The requested URL could not be retrieved

While trying to retrieve the URL: http://9958.pw/

The following error was encountered:

Unable to forward this request at this time. This request could not be forwarded to the origin server or to any parent caches. The most likely cause for this error is that:

The cache administrator does not allow this cache to make direct connections to origin servers, and All configured parent caches are currently unreachable.

我當時遇到的時候是由於防火牆問題：

[root@cloud init.d]# ./iptables stop 
iptables：清除防火牆規則： [肯定] 
iptables：將鏈設置爲政策 ACCEPT：filter [肯定] 
iptables：正在卸載模塊： [肯定] 
[root@cloud init.d]#

轉載自:http://www.9958.pw/post/vps-centos-504