I would caution anyone considering buying this software because when a problem arises with it, the developer stops responding to support requests. After I ran the new version of SOCKS, another application by this same developer, it wiped out my Mac's ability to use keychains properly. Requests to the developer on how to fix the problem created by SOCKS have been ignored. It still isn't working properly and I have no idea how to fix it. It was suggested to me by a Mac journalist on another site that I might have to do a clean install of the OS. I suspect that the developer is panicking either because he doesn't know how to solve the problem or he doesn't want such a serious, intensive fix associated with his software. Keep this in mind when considering buying any of his software.