Ubee DDW365 User Manual

Also see for DDW365: User guide

Contents

Ubee DDW365 User Manual Manual pdf 51 page image

Ubee Interactive Using the Port Triggers OptionUbee DDW365 Wireless Cable Modem Subscriber User Guide • October 2013 475. Create Port Forwarding rules per port. A rule set up for port 53 works only for port 53.A port can be used only by one program at a time.NoteYou can set up applications/services to listen on one internal port. External Internetusers who want to access that application, address it using an external port, such asan Audio server. Internal Ports are the ports to which local servers listen. ExternalPorts are the ports that the cable modem listens to from the WAN.The following screen shot shows Forwarding set up for an Xbox.6.6 Using the Port Triggers OptionPort Triggers define dynamic triggers to specific devices on the LAN. This allows specialapplications that require specific port numbers with bi-directional traffic to functionproperly. Applications such as video conferencing, voice, gaming, and some messagingprogram features may require these special settings.Some services use a dedicated range of ports on the client side and a dedicated range ofports on the server side. The difference between port forwarding and triggering is: Port forwarding sets a rule to send a service to a single LAN IP address. Port triggering defines two kinds of ports: trigger port and target port. The triggerport sends a service request from a LAN host to a specific destination port number.The port the LAN host is required to listen to by the application is called the targetport. The server returns responses to these ports.For example:1. John requests a file from the Real Audio server (port 7070). Port 7070 is a “trigger”port and causes the device to record John’s computer IP address. The DDW365associates John's computer IP address with the “target” port range of 6970-7170.