RE: Automatic Signon: How the 5250 client can differentiate between V5R1and Pre-V5R1 Releases when signing on.

For telnet I don't think there is any indicator in the telnet data stream
that will help you.  There may be something in the Signon or Central Servers
data stream but you will either need a copy of the LIPI's (document the
server data streams) or you can dig through the JTOPEN source to see if you
can figure it out.  

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Nageeb Khoury
Sent: Sunday, February 06, 2005 10:48 AM
To: midrange-l@xxxxxxxxxxxx
Subject: Automatic Signon: How the 5250 client can differentiate between
V5R1and Pre-V5R1 Releases when signing on.

The following summarizes the cases when to use DES7 or SHA1 Encryption:

If the remote system is running OS/400, you should set this parameter based
on the release level of the remote system and the system value QPWDLVL on
the     remote system. 

*       If OS/400 on the remote system is at release level V4R5 or earlier,
specify *DES7. 

*       If OS/400 on the remote system is at release level V5R1 or later,
and QPWDLVL has a value of '0' or '1', specify *DES7. 

*       If OS/400 on the remote system is at release level V5R1 or later and
QPWDLVL has a value of '2' or '3', specify *SHA1. 

If the encryption algorithm used does not match what is expected by the
remote system, the automatic sign-on will fail and the user is presented
with a sign-on display on the target system, or a failure message on the
source system, depending on the configuration of the target system. 

The Question is: How the AS/400 client can differentiate between
V5R1/Pre-V5R1 Releases  Levels '0' or '1'/'2' or '3' in the protocol (TCP/IP
Telnet Connection)?

Assume i started a display or database session  to a Pre-V5R1 AS/400 and
QPWDLVL '1' , then how can i know that i have to use here DES7 instead on
the SHA1 encryption in the protocol?

N.Khoury

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