tux on 2.4.27 kernel and referrer checking

Hi,

I am wondering where I can find the patch or which patch I should use
for the latest 2.4.x kernel? I would like to use tux on a production
server so I'm sticking with the 2.4 series until 2.6 becomes ready for
production use.

I was also wondering if there were any modules out or ways to get
referrer checking support into tux?