h5. The Problem: If you are through with Manage the data in different formats!! (Industry Scenario--> Manage the data in different formats! ! Part-1), you must be wondering how we were able to FTP files to our supplier. It sounds pretty simple but when comes to real time industrial scenario it is not, read on to find out what we had to do to implement this simple looking scenario. Our R3 Enterprise (WAS 6.20) was inside the firewall making it difficult to FTP directly and as usual basis didn't agree to open inbound FTP connection with the suppliers citing security reasons. Now we were expected to use a DMZ(demilitarized zone) server as the interface between supplier and our Web Application server. While all our solution was on ABAP, when we looked around we figured using Java based solution on DMZ can reduce the cost, effort and time for developing the solution. During the process we learnt how well ABAP and Java work together. h5. The Solution: We looked around for a quick solution, we have a J2EE server (We were using Paramati but you can use anyone like Tomcat or even SAP J2EE) running on DMZ. Our major problem was our lack of java knowledge so we looked around a little bit more and found an open source solution FtpBean (http://www.geocities.com/SiliconValley/Code/9129/javabean/ftpbean/). (Thanks to Sanjeev (http://forums.sdn.sap.com/profile.jspa?userID=32405&start=0) for his valuable guidance and support). Now the problem was simplified to just writing a servlet that can use this to GET and PUT the files to our supplier's FTP server. So eventually we ended up with following Architecture – 
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