SAPGUI系统登录页面配置的SAProuter有什么用

大家在安装完SAPGUI后，准备添加系统列表进行登录时，注意过这个SAProuter字段么？

从SAP的帮助文档上可以找到SAProuter的定义：
https://help.sap.com/saphelp_nwes73/helpdata/en/48/6b41efb74c07bee10000000a42189d/content.htm?no_cache=true

SAProuter is an SAP program that acts as an intermediate station (proxy) in a network connection between SAP systems, or between SAP systems and external networks. SAProuter controls the access to your network, and, as such, is a useful enhancement to an existing firewall system (port filter).

Figuratively, the firewall forms an impenetrable “wall”around your network. However, since particular types of connections need to penetrate this wall, a “gate”has to be made in the firewall. SAProuter assumes control of this gate.
In short, SAProuter provides you with the means of controlling access to your SAP system.

SAProuter是一个SAP发布的应用，在SAP系统与系统之间，SAP系统与外部网络之间扮演着代理的角色。SAProuter能实现对SAP系统的访问控制，是企业防火墙的有效补充。

如下图所示，部署于企业局域网的客户端SAPGUI进行系统登录，登录请求通过局域网内的SAP router转发到Internet网络上的另一台SAP Router，再转发给部署于企业内网的ERP服务器。