Use squid. > In linux, I wonder if Layer-7 filtering is possible. > > I want to filter packets that include specific pattern in it's payload(not header, data part). > > ex) Packets that include "aaa.exe" text pattern in it's data part. > > If it is possible, mail traffic that include specific text pattern can be filtered. > > I thought that above function is very useful. > > In Linux, is it possible?
