You can debug Kerberos issues using the log4j properties in the
SkyVault.log file.
For example:
log4j.logger.org.alfresco.web.app.servlet.KerberosAuthenticationFilter=debug log4j.logger.org.alfresco.repo.webdav.auth.KerberosAuthenticationFilter=debug
The following is a sample login output:
18:46:27,915 DEBUG [app.servlet.KerberosAuthenticationFilter] New Kerberos auth request from 192.168.4.95 (192.168.4.95:38750) 18:46:28,063 DEBUG [app.servlet.KerberosAuthenticationFilter] User user1 logged on via Kerberos