puhverserver(A computer (or the software that runs on it) that acts as a barrier between a network and the Internet by presenting only a single network address to external sites); puhver(A software component that intermediates requests from client software components and responses from service or server software components that respond to those requests)
Proxy(A computer (or the software that runs on it) that acts as a barrier between a network and the Internet by presenting only a single network address to external sites); Proxy(A service, process, or file that allows the computer to serve as an interface device between a remote system and the Internet. Common uses of a proxy are to send unsolicited (spam) email)
