Sa mga may CentOS at Debian dyan, eto universal installer for Squid+Privoxy on CentOS, Debian at OpenSUSE. Pwede din subukan sa Ubuntu although I think yung Ubuntu may different default firewall, so hindi aplikable yung part na yun. Pero madali nalang idag-dag yun sa future.
In addition, it sets up a chained squid, privoxy proxy.
Just copy it over to your VPS, then run from there. And wait there's more, may auto-email pa ito sa owner with the report after it has completed the setup. Isa pa, it is plaintext. Anyone can view it, edit it (of course you have to retain the license).