Generally, we Internet，It is to plug the Internet cable，Dial need at most。However, in the enterprise network application environment may have more complex，This is a general home network can not understand。So，Acting this feature came into being。
Agent name suggests is your place to visit you can not access resources。
Defined on Wikipedia is this：
Agent (English：Proxy），Also known as the Network Agent，It is a special network services，[……]
Although the cause of the leakGoogle itself does not come from a server intrusion，(The official also did not acknowledge being hacked and flawed) butFrom phishing attacks，But anyway now 4929090 A Gmail account password has been disclosedIn the network，This is nearly five million the number of ah! Other，They claim that the inside is still Liucheng is still valid，All told，That is, more than three million, right?