[jcifs] Problem Authenticating with IE 6.0 SP2 with login-protected pages in iframes

Ingo Rockel irockel at pironet-ndh.com
Fri Mar 23 13:06:08 GMT 2007


we are currently in the progress of updating a customers system where we 
use jcifs for auto-login into our J2EE application from WinXP/IE SP2 
workstations. In the old version of our application we used jcifs 1.0.1 
for authentication. The new version of our application uses jcifs 1.2.9.

The J2EE application is also embedded into a Portal-Site via iframes. If 
the application is accessed directly auto-login via jcifs works just 
fine. If content from the application is included via iframes the 
authentication fails with jcifs 1.2.9 (either auth-failure pages or a 
login dialog pops up) but works just fine with the old version.

We can reproduce this problem if we are using a simple local html-file 
with iframes which includes content from our application. Strange 
though, we can only reproduce this at the customers site. We are unable 
to reproduce it in-house. The customer found the following KB-article at 


with a suggested workaround to set a "MaxConnectionsPerServer" to 1. If 
this param is set to 1, auth works fine with jcifs 1.2.9 but 
unfortunately the customers needs this value to be 8 for another 

We also tried to set the ssnLimit to 1 without success. We are currently 
testing a backport of the old jcifs but I would be happy if someone has 
an idea what might cause this problem as backporting full support for 
the old jcifs version would be a lot of work.

Thanx and kind regards,


Dipl. Inf. Ingo Rockel - Produktentwicklung
Maarweg 149-161, 50825 Koeln
Tel.: +49 (0)221-770-1788 / Fax: +49 (0)221-770-1005
mailto:irockel at pironet-ndh.com - http://www.pironet-ndh.com

PIRONET NDH AG, Sitz Koeln, HRB 26734, AG Koeln
Vorsitzender des Aufsichtsrats: Klaus Wiegandt
Vorstand: Hans-Werner Scherer (Vorsitz), Ulf Adebahr, Felix Höger

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