Haxxio UDP Serial Port Redirector
Having support for UDP broadcast propogation between networks enabled on routers by default is now deprecated, you will have to make this setting yourself, with a full understanding of the risks of enabling broadcast propogation. A few years ago, Cisco routers were shipped with directed broadcast support enabled, and a bunch of bad people developed the "smurf" attack, which exploited this feature to launch denial-of-service attacks.
Before enabling directed broadcast support on a network which is connected to the internet, ensure your border routers comply with the advice given in the best practice document RFC2827
Point your network manager at Cisco - UDP Broadcast Flooding