I can’t reply on KINTA-JAPAN 's topic :Filesystem Filter Driver for kernel 3.5-3.18(redirfs and avflt) ,so I create new topic based on his drive and updated by charlie_xstar .This driver is tested on linuxmin 18 (kernel 4) ,linuxmint 20 (kernel 5) and ubuntu 22.04 (kernel 5) used for emal (comodo is sec AV).For SSL error’s on make install, is a fixcert.sh, this script generate certificate for signing modules.Make file from avflt is modified to avoid modpost errors.