My Linux router (RH7.3) runs routed, and port 520 is NOT open for UDP. The box routes traffic between a LAN and two separate DSL-connected ISPs. What benefits am I giving up by not having port 520 open? What benefits would I gain (if any) for sharing routing information with the ISPs over the DSL connections? What are the risks in opening that port? Okay, it's just a newbie question, but I'm still trying to learn. --Carol Anne
