with your permission ill probably copy the script to the FS wiki, and attribute it with links to the other locations.
The current version of the script and a little background can be found here:
http://blog.krisk.org/2008/07/sip-dosddos-mitigation.html
I have no problem linking the FS wiki to either of these but the
eTel wiki will probably get taken down eventually.
As far as the issue with the stop command... I remember us talking
about it but I don't remember the specific problem. Care to refresh
my memory?