电子政务外网是政府部门之间由于协同办公的需要而建立的专用网络。它同政府内网物理隔离,同Internet网逻辑隔离,它同其它网络逻辑隔离。电子政务外网系统是由相关的和配套的设备、设施按照电子政务平台信息系统的应用目标和规则组合而成的有形实体。它是各级政府对外沟通的门户系统,为用户提供查阅信息,办理相关业务(公民、企业可通过政府外网办理各种手续、证书、执照等,享受到政府所提供的各种服务)、沟通交流的网络平台。它的内部任务是OA、邮件、简报、公文交换、会议管理,还包含通过互联网 E-government outside the network is between government departments due to the need to work together to establish a dedicated network. It is physically isolated from the government intranet and is logically isolated from the Internet, which is logically isolated from other networks. E-government outside the network system is related and supporting equipment, facilities in accordance with the e-government platform for the application of information systems and objectives and rules of the combination of tangible entities. It is a gateway system for government communication at all levels, providing users access to information and handling related businesses (citizens, enterprises can enjoy various formalities, certificates, licenses and other services provided by the government through the government’s external network) Communication network platform. Its internal tasks are OA, e-mail, newsletters, document exchange, meeting management, but also through the Internet