Ip6wall is a project of Fabio Borraccetti <miasma@no-net.org>.
Ip6wall is has been rewritten but still there are some pieces 
of old ip6wall version that was based on a modified copy of gShield which
is written by R. Gregory <godot@linuxmafia.org>.
Second most important source of code is http://easyfwgen.morizot.net/gen/ 
automatically generated script. 
See Changelog for a list of changes.

gShield was downloaded from http://muse.linuxmafia.org/gshield.html
Upstream Author: R. Gregory <godot@linuxmafia.org>

Copyright:

  Copyright 2003, 2004, 2005, 2006, 2007, 2008 F. Borraccetti <miasma@no-net.org>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published
  by the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software Foundation,
  Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA


A copy of license can be found in LICENSE