Sorry for the possible stupid question, but im assuming anyone can grab up a bounty? If thats the case, I may be interested in this project =]
I am currently working with pfsense in a test environment to try to replace our current setup at work.
Now as far as questions about the bounty, I'm assuming you would want this proxy to work with different back-end servers. i.e. :
192.168.1.10 www.site1.com
192.168.1.11 www.site2.com
192.168.1.12 www.site3.com
Use pfsense as central WAF (web appliance firewall) that would check content, and if ok pass on to appropriate site. Im assuming this would be configured through pfsense, i.e. point site1 to .10 ip, site2 .11 and site3 .12.
Let me know if that makes sense!
thanks,
kosta