IBM AS/400e User Handbook Manual page 504

Operating System/400, 5769-SS1
Connectivity
The Express client supports TCP/IP connectivity and uses the standard TCP/IP program
shipped with the Microsoft 32-bit operating systems (other Winsock-compatible stacks can
also be used). Communications program improvements (significant streamlining and more
efficient use of buffers) result in increased stability and better performance. Additionally, the
Express client provides:
• Easier communications setup since configuration of your communications link is no
longer required. Simply select the Express client application you want to run and then
enter the AS/400 system name you want to connect to and your user ID and password.
The Express client then initiates a TCP/IP session, and the application is connected to
the AS/400 system.
• Multiple user ID support using a single copy of Client Access. This is valuable when
using the Windows NT 4.0 server in a multiuser environment, where each is using a
different application.
The following environments, which do not actually need Client Access installed on the user
desktop, are also supported:
• Microsoft Windows NT 4.0 Terminal Server Edition (TSE). This environment enables
the Windows NT server to be used as a gateway between end users and the AS/400
system. This capability is particularly advantageous to Network Station users who
want to use Client Access functions such as PC5250 and ODBC. For detailed
information on environments and functions supported, refer to Informational APAR
II11373 on the Client Access Web page.
• Microsoft Windows NT 4.0 Server with Microsoft Internet Information Server (or IIS)
and Microsoft NT 4.0 Workstation with a version of IIS called Peer Web Services. This
support provides AS/400 database access from Web pages. Refer to "Web Publishing
with the Client Access ODBC Driver and IIS" information in the Developers Corner of
the Client Access Web page for examples on how to access an AS/400 database
using the Internet Data Connection (IDC) component of IIS or by using Active Server
Pages (ASP) scripts.
Security
The AS/400 system is designed to protect its resources and data by requiring users to
provide a valid user ID and password to sign on. The Express client uses TCP/IP Secure
Sockets Layer (SSL) Version 3.0 to encrypt information sent between the AS/400 system and
the desktop. It also uses AS/400 Server Authentication to assure connection to the intended
AS/400 system, therefore diminishing the risk of unauthorized access in an Internet
environment. SSL encrypts the user ID and password, plus any other information sent
between the AS/400 system and the desktop.
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AS/400e System Handbook