VM I-Net Web Client login fails with HTTP ERROR 403 for servlets using an SBM SSO server for authentication

ID:    S143404
Published:    17 March 2021

Operating System(s)

  • All Unix
  • All Windows


  • PVCS Version Manager


The VM I-Net Web Client page /vminet.html renders normally, but selecting any servlets on the list shown there yields an error like:

Access to DNS_Name_of_SBM_SSO_Server was denied

You don't have authorization to view this page.




This error can be the result of an SBM SSO security enhancement that was introduced in SBM 11.5.1, and then backported to SBM 11.4.2. (For this reason the error can first occur if SBM was upgraded from either SBM SBM 11.5.0, SBM 11.4.1 or an older release.)
The security enhancement restricts access to the SSO Login web page to a list of authorized servers, which by default consists of just the SBM server itself. To use PVCS VM with this SSO server, the DNS name of the VM server has to be added to the SSO Protected Hosts tab on the Authentication page in SBM Configurator. In this example, the PVCS VM server running on host was added to the list of authorized servers:


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