diff --git a/build_iptables.sh b/build_iptables.sh
new file mode 100755
index 0000000..5855edb
--- /dev/null
+++ b/build_iptables.sh
@@ -0,0 +1,50 @@
+#!/bin/bash
+
+set -e
+
+source ../../a5s_linux_sdk/ambarella/build/env/CodeSourcery.env
+PATH=$PATH:$ARM_LINUX_TOOLCHAIN_DIR/bin
+
+TOP=`pwd`
+
+rm -rf dist
+mkdir dist
+
+rm -rf build
+mkdir build
+cd build
+
+tar xfv ../iptables-1.4.9.1.tar.bz2
+cd iptables-1.4.9.1
+
+BUILDENV=`./config.guess`
+
+./configure --enable-static \
+            --enable-shared \
+            --prefix=/usr \
+            --sysconfdir=/etc \
+            --localstatedir=/var \
+            --build=$BUILDENV \
+            --host=arm-none-linux-gnueabi \
+            CFLAGS="-finline-limit=2000 -mtune=arm1136j-s -march=armv6 -Os -I$TOP/../../a5s_linux_sdk/ambarella/prebuild/third-party/expat/include" \
+            LDFLAGS="-Os -L$TOP/../../a5s_linux_sdk/ambarella/prebuild/third-party/expat/lib -lexpat -Wl,-rpath,$TOP/../../a5s_linux_sdk/ambarella/prebuild/third-party/zlib/lib" \
+            GLIB_CFLAGS="-I$TOP/../glib/dist/usr/include/glib-2.0 -I$TOP/../glib/dist/usr/lib/glib-2.0/include" \
+            GLIB_LIBS="-L$TOP/../glib/dist/usr/lib -lglib-2.0 -lgobject-2.0 -lgio-2.0" 
+
+make all
+make install DESTDIR=$TOP/dist
+cd $TOP
+
+rm -rf fakeroot
+mkdir fakeroot
+cp -R dist/* fakeroot/
+rm -rf fakeroot/usr/include
+rm -rf fakeroot/usr/share
+rm -rf fakeroot/usr/var
+rm -rf fakeroot/usr/lib/pkgconfig
+rm -rf fakeroot/usr/lib/*.a
+rm -rf fakeroot/usr/lib/*.la
+
+tar cjfv iptables.tar.bz2 fakeroot
+cp iptables.tar.bz2 ../../a5s_linux_sdk/ambarella/boards/dropcam/rootfs/
+
diff --git a/iptables-1.4.9.1.tar.bz2 b/iptables-1.4.9.1.tar.bz2
new file mode 100644
index 0000000..ede7833
--- /dev/null
+++ b/iptables-1.4.9.1.tar.bz2
Binary files differ