What would be reason for placing a proxy server in a Demilitarized Zone (DMZ)?
I understand that a DMZ is a separate network to your internal network (lies inbetween internal network and firewall). I know that you would add a computer which hosts services to the DMZ e.g. web server, to increase security (if your web server gets attacked, then your internal network will be safe). I have seen proxy servers in some business which are placed on the internal network and not the DMZ.