## Configuration for WAN router#config WAN_ROUTER tristate "WAN router" depends on EXPERIMENTAL ---help--- Wide Area Networks (WANs), such as X.25, frame relay and leased lines, are used to interconnect Local Area Networks (LANs) over vast distances with data transfer rates significantly higher than those achievable with commonly used asynchronous modem connections. Usually, a quite expensive external device called a `WAN router' is needed to connect to a WAN. As an alternative, WAN routing can be built into the Linux kernel. With relatively inexpensive WAN interface cards available on the market, a perfectly usable router can be built for less than half the price of an external router. If you have one of those cards and wish to use your Linux box as a WAN router, say Y here and also to the WAN driver for your card, below. You will then need the wan-tools package which is available from <ftp://ftp.sangoma.com/>. To compile WAN routing support as a module, choose M here: the module will be called wanrouter. If unsure, say N.
