ZyXEL NBG-418N v2 User Guide - Page 108
Two Points To Remember About Trigger Ports, Network Address Translation
View all ZyXEL NBG-418N v2 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 108 highlights
Chapter 10 Network Address Translation 2 Port 7070 is a "trigger" port and causes the NBG-418N v2 to record Jane's computer IP address. The NBG-418N v2 associates Jane's computer IP address with the "incoming" port range of 69707170. 3 The Real Audio server responds using a port number ranging between 6970-7170. 4 The NBG-418N v2 forwards the traffic to Jane's computer IP address. 5 Only Jane can connect to the Real Audio server until the connection is closed or times out. The NBG-418N v2 times out in three minutes with UDP (User Datagram Protocol), or two hours with TCP/IP (Transfer Control Protocol/Internet Protocol). 10.6.5 Two Points To Remember About Trigger Ports 1 Trigger events only happen on data that is coming from inside the NBG-418N v2 and going to the outside. 2 If an application needs a continuous data stream, that port (range) will be tied up so that another computer on the LAN can't trigger it. NBG-418N v2 User's Guide 108