Fwd: Kerb5 features

[Mengjia Ding]

Hi,

I'm a student from University of York. Now I'm planning for a paper about
the modifications from kerb4 to kerb5. I was searching some useful
imformation on your website. Unfortunately, I couldn't find anything about
kerb4 which can help me to find the differences or improvement between
kerb4 and kerb5. So can you support me some information about the features
of kerb5, especially for thoses modifications countering threats addressed
by each change?

Thank you very much.

Mengjia Ding