Hi, There is the latest version of tproxy4, it works with Linux kernel 2.6.22. It seems there is no significant difference between 2.6.22 and 2.6.23-rc1, also it should work with 2.6.23-rc1 too. The release tarballs are available here: http://www.balabit.com/downloads/files/tproxy/ MD5 checksums of the tarballs: 990895761bedce8b2e7240cd279fe7be tproxy-4.0.0-2.6.22.tgz d7175531d67beaab48293cd86cac5d21 tproxy-4.0.0-ubuntu-2.6.17-12.39.tgz -- Regards, Laszlo Attila Toth