PHP Password Attempts Blocking
<p>I am wondering the best way to handle blocking computers after the users commit 5 wrong login attempts.</p>

<p>I was thinking to have it does by IP but then I started thinking what about if users were coming through a gateway and shared a common IP. I wouldn't want to potentially block legimate users because someone else on the same network is entering incorrect data.</p>

<p>Cookies are another option but users can clear them from the browser so i think they would be very ineffective.</p>

<p>Can anyone else give me anymore ideas on this please?</p>

<p>Thanks Mic</p>
