I installed FreeBSD 8.2 to test different solutions. I would check now the library named security/libparanoia. I know that it can be used in two ways. Relink critical applications with -lparanoia -L/usr/local/lib or override standard functions in libc (using libparanoia/copy-to-libc shell script). As directed in port description. libparanoia seems to be old, but as I wrote, I would like test it. The problem is, that, I do not know how to relink daemons. Maybe function, which are included in libparanoia are already available in FreeBSD?
# ln -lparanoia -L/usr/local/lib network_daemon_path_here?
# ln -lparanoia network_daemon_path_here?