diff --git a/openbsc/configure.in b/openbsc/configure.in
index d2fd67a..ef95920 100644
--- a/openbsc/configure.in
+++ b/openbsc/configure.in
@@ -54,10 +54,12 @@
     src/Makefile
     src/ipaccess/Makefile
     src/gprs/Makefile
+    src/nat/Makefile
     tests/Makefile
     tests/debug/Makefile
     tests/gsm0408/Makefile
     tests/db/Makefile
     tests/channel/Makefile
     tests/sccp/Makefile
+    tests/bsc-nat/Makefile
     Makefile)
diff --git a/openbsc/include/openbsc/Makefile.am b/openbsc/include/openbsc/Makefile.am
index 5957d71..465b21a 100644
--- a/openbsc/include/openbsc/Makefile.am
+++ b/openbsc/include/openbsc/Makefile.am
@@ -9,7 +9,7 @@
 		 vty.h socket.h \
 		crc24.h gprs_bssgp.h gprs_llc.h gprs_ns.h gprs_gmm.h \
 		gb_proxy.h gprs_sgsn.h gsm_04_08_gprs.h sgsn.h \
-		gprs_ns_frgre.h auth.h osmo_msc.h
+		gprs_ns_frgre.h auth.h osmo_msc.h bsc_msc.h bsc_nat.h
 
 openbsc_HEADERS = gsm_04_08.h meas_rep.h bsc_api.h
 openbscdir = $(includedir)/openbsc
diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am
index 11b9824..2c92a86 100644
--- a/openbsc/src/Makefile.am
+++ b/openbsc/src/Makefile.am
@@ -3,7 +3,7 @@
 AM_LDFLAGS = $(LIBOSMOCORE_LIBS)
 
 # build current directory before building gprs
-SUBDIRS = . ipaccess gprs
+SUBDIRS = . ipaccess gprs nat
 
 sbin_PROGRAMS = bsc_hack bs11_config isdnsync bsc_mgcp
 noinst_LIBRARIES = libbsc.a libmsc.a libvty.a libsccp.a libmgcp.a
diff --git a/openbsc/src/nat/Makefile.am b/openbsc/src/nat/Makefile.am
new file mode 100644
index 0000000..0ca3bdf
--- /dev/null
+++ b/openbsc/src/nat/Makefile.am
@@ -0,0 +1,13 @@
+INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
+AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS)
+AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS)
+
+bin_PROGRAMS = bsc_nat
+
+
+bsc_nat_SOURCES = bsc_filter.c bsc_mgcp_utils.c bsc_nat.c bsc_nat_utils.c \
+		  bsc_nat_vty.c bsc_sccp.c \
+		$(top_srcdir)/src/debug.c $(top_srcdir)/src/bsc_msc.c
+bsc_nat_LDADD = $(top_builddir)/src/libvty.a $(top_builddir)/src/libsccp.a \
+		$(top_builddir)/src/libmgcp.a $(top_builddir)/src/libbsc.a \
+		-lrt
diff --git a/openbsc/tests/Makefile.am b/openbsc/tests/Makefile.am
index 3b1b931..b469832 100644
--- a/openbsc/tests/Makefile.am
+++ b/openbsc/tests/Makefile.am
@@ -1 +1 @@
-SUBDIRS = debug gsm0408 db channel sccp
+SUBDIRS = debug gsm0408 db channel sccp bsc-nat