On Thu, Aug 14, 2003 at 10:17:29PM +0300, Timo Sirainen wrote: > AFAIK all those combined do bring real security against generic exploits. "Real security" is not the word. PaX / Propolice / W^X / non-exec stacks don't solve bugs. What they do is to _abort_ execution of a process when it behaves abnormally. So instead of giving attackers the opportunity to run arbitrary code, you only give them the ability to cause a denial of service. This kind of protection should be coupled with tools that automatically restart daemons when they crash (ex: daemontools and monit) to actually keep the service running when under attack. Still, all of this is a couple of unreliable band-aids. -- __ /*- Frank DENIS (Jedi/Sector One) <j@42-Networks.Com> -*\ __ \ '/ <a href="http://www.PureFTPd.Org/";> Secure FTP Server </a> \' / \/ <a href="http://www.Jedi.Claranet.Fr/";> Misc. free software </a> \/
