This white paper aids Mainframe Programmers, AS/400 Administrators, and Microsoft Host Integration Server (HIS) administrators in configuring IP-DLC (Internet Protocol – Data Link Control) link service which ships with HIS.
http://www.microsoft.com/downloads/details.aspx?familyid=86d6011a-3396-4c36-b4b1-af7f4d80a099&displaylang=en&tm