TAILIEUCHUNG - Elastix & Network Security Guide

Establish a clear network access control policy. It is often the case that the administrators of grid resources are not the same individuals as those of site access control systems (. firewalls). Consequently, it is important for the reliability and availability of grid services that the connectivity requirements are properly communicated and agreed by the network managers. This will reduce the likelihood of ports being closed unexpectedly and facilitate the proper monitoring of traffic. The table in Appendix B describes the IP connectivity requirements of current grid software. Additional guidance for the configuration and use of the Globus Toolkit. | Elastix Network Security Guide Author Bob Fryer Organisation Blue Packets ACT Australia Date 09 01 2011 Revision Level Beginner Intermediate Advanced Date for Review 30 03 2011 or Elastix Release Relates to Elastix - and some earlier versions Licence GNU FDL Contributors Introduction Security is a very broad subject and rightly so. It is a very subjective topic as well and to a certain degree it is a subject that will never have a definitive end. That s why I generally dismiss any book that claims to be a Definitive Guide to Security. It is a constant living subject with improvements changes retractions and even changes in thinking and direction every year. There is also no subject like security that stirs up the emotions especially when statements are made as everyone has their own views and ideas. Security is also not going to be fixed by one device that fixes everything. It is a set of tools backed up by procedures and ultimately backed up by diligent review and monitoring. Security is only as good as the weakest link in the chain which is why this guide covers Network as well but no matter how well you follow this guide implement its measures follow procedures it will always come undone by something very basic something you have never considered to be an issue or a link in the chain of security. This document is not a definitive guide on Security. I won t even promise you that by following this guide that your Elastix system will not be hacked. Only you can continue to work on this side of things learning more about security implementing new measures as you feel are needed. Likewise Security is as much as you want to make it. You may be able to secure your system to cover 70 of your system using tools products that you have and no further hardware you may be able to cover 95 of your system with a few hundred dollars but to get to that 99 it could cost you thousands of dollars and you may still have that 1 chance that someone gets through. This .

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