A linux Server with a small proxy is the best and safest resolution. Im set them up since 20 Years in my Job. For that 20 bugs you get a almost unbreakable proxy, i say almost because you never know if someone is going to find a exploit that wasnt known before . But a linux Proxy gives a super small footprint so it is extremely difficult to crack that kind of proxy server. It is a fast job and i provide support for u. to be honest i do it for that price and with support only because i would like to have at least a first accomplished job on Freelancer, so email me and we can talk even about the price......
Thanks
Marko