Re: [PHP] PHP Denial of service

2006-10-14 Thread Ryan Barclay
It hasn't actually been attempted. However, if a couple of a users were to hold the refresh, the page generation times would go up ridiculously and clients would be waiting over 20sec for pages. As mentioned, it's a very heavy php-mysql script with lots of queries. Ryan -- Ry

Re: [PHP] PHP Denial of service

2006-10-14 Thread Ryan Barclay
Jon, Thanks for the reply. Yes, ignore_abort is defaulting to off, as stated in my other post. We have a Firebox III 1000 firewall on our external, however this does not have any features like this. I will look into iptables. Thanks, Ryan -- Ryan Barclay RBFTP Networks Ltd. DDI: +44

Re: [PHP] PHP Denial of service

2006-10-14 Thread Ryan Barclay
l the best, Ryan -- Ryan Barclay RBFTP Networks Ltd. DDI: +44 (0)870 490 1870 WWW: http://www.rbftpnetworks.com BBS: http://forums.rbftpnetworks.com Robert Cummings wrote: On Sat, 2006-10-14 at 01:25 +0100, Ryan Barclay wrote: Robert, Thanks for the reply. I can't se

Re: [PHP] PHP Denial of service

2006-10-13 Thread Ryan Barclay
m guessing that if ignore_user_abort is set to on, this could be the culprit? Would simply adding the following to the ini work?: ignore_user_abort = off Best, Ryan -- Ryan Barclay RBFTP Networks Ltd. DDI: +44 (0)870 490 1870 WWW: http://www.rbftpnetworks.com BBS: http://forums.rbftpne

Re: [PHP] PHP Denial of service

2006-10-13 Thread Ryan Barclay
m guessing that if ignore_user_abort is set to on, this could be the culprit? Would simply adding the following to the ini work?: ignore_user_abort = off Best, Ryan Robert Cummings wrote: On Fri, 2006-10-13 at 22:16 +0100, Ryan Barclay wrote: A simple question I imagine, but I am wondering h

[PHP] PHP Denial of service

2006-10-13 Thread Ryan Barclay
A simple question I imagine, but I am wondering how I would combat DoS attacks by users holding the REFRESH key on their browsers? I have reproduced this error on a PHP-MYSQL website and when I hold the REFRESH key on for a while, page gen times shoot up dramatically and hundreds of processes