Note: if blocking ports to stop msblast.exe, do not block 4444

Jeffrey Altman jaltman at
Tue Aug 12 19:41:17 GMT 2003

A reminder for those environments using Kerberos V authentication with 
the krb524 service daemon.  Do not block port 4444 on your network or 
you will prevent Kerberos clients from converting Kerberos V tickets to 
Kerberos IV tickets.  The ability to convert to Kerberos IV tickets is a 
requirement for many services include Zephyr and AFS.

Jeffrey Altman
MIT Kerberos Development team

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