--- Make.rules.in.orig	2015-05-27 20:25:54.000000000 -0400
+++ Make.rules.in	2016-01-25 21:48:47.000000000 -0500
--- Make.rules.in.orig	2017-04-10 02:31:02.000000000 +0000
+++ Make.rules.in
@@ -113,3 +113,6 @@ BUILD_FTPTOP_OBJS=utils/ftptop.o utils/s
 
 FTPWHO_OBJS=ftpwho.o scoreboard.o misc.o
 BUILD_FTPWHO_OBJS=utils/ftpwho.o utils/scoreboard.o utils/misc.o
+
+OBJS+= pfilter.o
+BUILD_OBJS+= src/pfilter.o