mod_kapow

Anti-ddos apache module

This is the GPLed source code written by Ed Kaiser Wu-chang Feng

corresponding to the paper also authored by them, titled

"mod kaPoW: Protecting the Web with Transparent Proof-of-Work"

published in Global Internet 08.

http://www.thefengs.com/wuchang/work/puzzles/globalinternet08_kapow.pdf

They gave me permission to release the source code under the GNU GPL (see the accompanying pdf email)

INSTALLATION NOTES:

1. Move kaPoW.js and invalid_pow.php to the root HTTP directory [/var/www/html].

2. Run [apache/bin/] apxs -i -a -c mod_kaPoW.c

3. Modify [apache/conf/] httpd.conf to include these directives:

   <VirtualHost *:80> ServerName "Low " ServerAlias kapow.cs.pdx.edu *.cs.pdx.edu KeepAlive Off <VirtualHost *:80> ServerName "High" KeepAlive On KeepAliveTimeOut 300 MaxKeepAliveRequests 0

4. Restart Apache.