Did a little research
I think Squid would work, not as a drop in replacement. Same with apache (there is a proxy redirect directive...I don't recall it). I haven't tried either solution, but they seem to have the same concept, albeit with a little more configuration! Good Luck

//Riley

Sent from my iPhone

> On Jan 28, 2014, at 9:04 PM, "stuart yeates" <[log in to unmask]> wrote:
>
> We've just received notification of forth-coming changes to EZProxy,
> which will require us to pay an arm and a leg for future versions to
> install locally and/or host with OCLC AU with a ~ 10,000km round trip.
>
> What are the alternatives?
>
> cheers
> stuart
> --
> Stuart Yeates
> Library Technology Services http://www.victoria.ac.nz/library/