On Wed, 6 Feb 2008, Stephen Gran wrote: > On Wed, Feb 06, 2008 at 03:24:17PM +0000, W B Hacker said: > > > > - absent a stream of test traffic, are existing tools in fact adequate > > to 'predict' what a change to ratelimit settings 'should be expected' to > > produce as a result? > > I am not sure how you hope to be able to predict a stochastic process > without at least attempting to model it. Am I missing something?
There is a small amount of information in the spec about how the rate measurement works. I deliberately did not go into detail because I did not want the maths to be off-putting, and in any case I chose the model carefully so that it would behave in a fairly intuitive manner. If you want a better idea of how it works, look at http://www-uxsup.csx.cam.ac.uk/~fanf2/hermes/doc/antiforgery/ratelimit.html There's also a brief summary in the code. If you want to experiment with the model, try piping data into the util/ratelimit.pl script. Tony. -- <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> http://dotat.at/ ${sg{\N${sg{\ N\}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}\ \N}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}} -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
