WANsim allows you to simulate (more accurately,
emulate) a WAN connection. In particular, it
allows a user to change the emulated WAN speed,
latency, variation, packet loss, packet
duplication, and packet corruption aspects. It is
configured as a network bridge that is established
at boot time and uses the Linux Kernel NETEM
functionality to accomplish its goals. Although
relatively well documented, this functionality is
not the easiest to use. WANsim wraps it into a
simple to use script.
