Communication between Netweaver and R/3 System

Hi,
I'm trying out the Netweaver sneak preview for testing the capabilities of the pdk for .net. I've added the development R/3 system (4.6C) of our company to the system landscape of the portal.
Does the communication between those two systems require that there's a gateway installed on the R/3 system?
My SAP colleagues are not so experienced with connecting different SAP systems. Where can I find the necessary settings in the R/3 system (SID, Server Port, SAP client, ...)? Which settings are required (necessary) in the portal?
Thanks a lot!
Regards,
Jef Geerinckx

Hi Jef,
a connection string which has the following parameters works fine, lang is not always necessary.
1> CLIENT
2> USER
3> PASSWD
4> ASHOST
5> SYSNR
6> LANG
a sample connection string : "CLIENT=200 USER=diverse PASSWD=world LANG=en ASHOST=sapdev1 SYSNR=2"
the ASHOST may need to be specified as "sapdev1.jefslandscape.com" in certain cases, but this depends on many things, one of which is where you make the access from [over the internet/intranet, etc...].
Hope this helps.
amit

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    S  option list size is 30
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    M Wed Aug 31 15:47:55 2011
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    M  SecAudit(RsauShmInit): addr of RSAUSHM........ = 05BD07A8
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    B  dbmyclu : info : Time Reference is 1.12.2001 00:00:00h GMT.
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