/lib/xtables/libipt_syn-flood.so

yaourt -S xtables-git

Installation instructions for Xtables-addons
============================================

Xtables-addons uses the well-known configure(autotools) infrastructure
in combination with the kernel's Kbuild system.

   $ ./configure
   $ make
   # make install


Supported configurations for this release
=========================================

   * iptables >= 1.4.5

   * kernel-devel >= 2.6.32
     with prepared build/output directory
     - CONFIG_NF_CONNTRACK or CONFIG_IP_NF_CONNTRACK
     - CONFIG_NF_CONNTRACK_MARK or CONFIG_IP_NF_CONNTRACK_MARK
       enabled =y or as module (=m)
     - CONFIG_CONNECTOR y/m if you wish to receive userspace
       notifications from pknock through netlink/connector


Selecting extensions
====================

You can edit the "mconfig" file to select what modules to build and
install. By default, all modules are enabled.


Configuring and compiling
=========================

./configure [options]

--without-kbuild

   Deactivate building kernel modules, and just do userspace parts.

--with-kbuild=

   Specifies the path to the kernel build output directory. We need
   it for building the kernel extensions. It defaults to
   /lib/modules/$(running version)/build, which usually points to
   the right directory. (If not, you need to install something.)

   For RPM building, it should be /usr/src/linux-obj/...
   or whatever location the distro makes use of.

--with-xtlibdir=

   Specifies the path to where the newly built extensions should
   be installed when `make install` is run. The default is to
   use the same path that Xtables/iptables modules use, as
   determined by `pkg-config xtables --variable xtlibdir`.
   Thus, this option normally does NOT need to be specified
   anymore, even if your distribution put modules in a strange
   location.

If you want to enable debugging, use

   ./configure CFLAGS="-ggdb3 -O0"

(-O0 is used to turn off instruction reordering, which makes debugging
much easier.)

To make use of a libxtables that is not in the default path, either

  a) append the location of the pkg-config files like:

   PKG_CONFIG_PATH=/usr/local/lib/pkgconfig

     (Assuming that files have been installed)
or,

  b) override the pkg-config variables, for example:

   ./configure libxtables_CFLAGS="-I../iptables/include" \
      libxtables_LIBS="-L../iptables/.libs \
         -Wl,-rpath,../iptables/.libs -lxtables"

     (Use this in case you wish to use it without having to
     run `make install`. This is because the libxtables.pc pkgconfig
     file in ../iptables would already point to e.g. /usr/local.)