Links for collective.KerberosPAS
collective.KerberosPAS-1.0.tar.gz
http://tldp.org/HOWTO/Kerberos-Infrastructure-HOWTO/
http://tools.ietf.org/html/rfc4178
http://www.centos.org/docs/5/html/Deployment_Guide-en-US/ch-kerberos.html
http://www.freebsd.org/doc/handbook/kerberos5.html
https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Managing_Smart_Cards/Configuring_a_Kerberos_5_Server.html
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