We want to set up some interfaces to external suppliers over the internet via XI. The question is how to set up the network.
I've seen pictures about XI network zones where an application gateway and a proxy is located in the outer dmz, the local adapter engine in de inner dmz and the integration server in the intranet. See
http://help.sap.com/saphelp_erp2004/helpdata/en/fb/c2953fc405330ee10000000a114084/frameset.htm.
What are the best practices for this? Should we use SAP web dispatcher as the application gateway? Or should we use an application gateway and behind that a SAP web dispatcher
What is the proxy used for? Is this for the outbound messages? Is the proxy a SAP function or not, if not what software/hardware solution for this is generally advisable.
Thanks
tom