> The problem is that any reasonably recent PC can generate enough > forged SYN packets to overwhelm reasonable SYN queues on a much more > powerful server.
Have you actually seen this with a recent kernel in the wild or are you just talking theoretically? Linux uses some heuristics to manage the syn queue that should still ensure reasonable service even without cookies under attack. Also SYN-RECV sockets are stored in a special data structure optimized to use minimal resources. It is far from the classical head drop method that was so vunerable to syn flooding. -Andi -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
