IisProxy: User authentication failed

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Hi,

We're trying to set up a portal server to serve as an extranet portal. Due to company regulations, we need an IIS server for access through the DMZ, so we chose to place an IIS Server with IisProxy in the DMZ.

After the necessary configurations, this works. However if I access the target extranet system directly I get the logon screen, which is what we want, but if I access the same system through the extranet box, thus through IisProxy, I get a message saying 'User authentication failed' on the login page. I am able to login after that without any further issues.

Although this is not impacting performance or stability, it's not pretty and we'd like to have it resolved.

I tried messing around with the login modules, which are now back to defaults, but this does not help. I also could not find anything on SDN that helps me.

So, currently the login module stacks looks like this:

1)com.sap.security.core.server.jaar.EvaluateTicketLoginModule SUFFICIENT {ume.configuration.active=true}

2) BasicPasswordLoginModule REQUISITE {}

3) com.sap.security.core.server.jaar.CreateTicketLoginModule OPTIONAL {ume.configuration.active=true}

Any input is greatly appreciated. Regards,

Steven Dijkman.