Kerberos authentication for chat service scheduled for Aug. 19

August 16, 2010

Information Technology Services (ITS) will enable Kerberos for the Penn State chat/IM service, during the regularly scheduled maintenance window (5 to 7 a.m.) on Thursday, Aug. 19.

During this time, the service will not be available; however, only intermittent outages are expected. Users also should note that the existing authentication for will not be terminated. While users will not be required to use Kerberos authentication, enabling it provides another authentication option for the service.

Once the update is complete, those who wish to use Kerberos authentication for will need to make some minor configuration changes to their respective chat clients in order to use Kerberos authentication. Detailed instructions are found in the ITS Knowledge Base at

The chat service, which was announced to the Penn State community in January 2010, uses the Extensible Messaging and Presence Protocol (XMPP) server software, known as "ejabberd," to enable instant messaging communications. XMPP is a set of open technology standards for presence and real-time communication. It allows members of the Penn State community to use their respective Penn State Access Accounts to chat with people both inside and outside of the University. Additional details are found in the original news release at

Inquiries and requests for assistance should be directed to ITS Help Desk Staff at

Last Updated August 17, 2010