Sits between a client program (typically a Web browser) and an external server (typically another server on the Web) to filter requests, improve performance, and share connections.

A) Lan
B) Ping of Death
C) Packets
D) Bandwidth
E) Router
F) Network Interface
G) Firewall
H) Web Server
I) URL
J) World Wide Web
K) Proxy Server
L) Web Browser

K) Proxy Server