Chapter 8 The NAT Configuration Screens
OX253P User
’
s Guide
84
8.4.1 Trigger Port Forwarding Example
The following is an example of trigger port forwarding. In this example,
J
is Jane
’
s
computer and
S
is the Real Audio server.
Figure 31
Trigger Port Forwarding Example
1
Jane requests a file from the Real Audio server (port 7070).
2
Port 7070 is a
“
trigger
”
port and causes the OX253P to record Jane
’
s computer IP
address. The OX253P associates Jane's computer IP address with the "incoming"
port range of 6970-7170.
3
The Real Audio server responds using a port number ranging between 6970-7170.
4
The OX253P 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 OX253P times out in three minutes with UDP (User Datagram
Protocol), or two hours with TCP/IP (Transfer Control Protocol/Internet Protocol).
Two points to remember about trigger ports:
1
Trigger events only happen on data that is coming from inside the OX253P 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.
Summary of Contents for OX253P
Page 9: ...Contents Overview OX253P User s Guide 10 ...
Page 16: ...17 PART I User s Guide ...
Page 17: ...18 ...
Page 21: ...Chapter 1 Getting Started OX253P User s Guide 22 ...
Page 27: ...Chapter 2 Introducing the Web Configurator OX253P User s Guide 28 ...
Page 44: ...45 PART II Technical Reference ...
Page 45: ...46 ...
Page 85: ...Chapter 8 The NAT Configuration Screens OX253P User s Guide 86 ...
Page 117: ...Chapter 10 The Certificates Screens OX253P User s Guide 118 ...
Page 127: ...Chapter 11 The Firewall Screens OX253P User s Guide 128 ...
Page 171: ...Chapter 16 The Status Screen OX253P User s Guide 172 ...
Page 179: ...Chapter 17 Troubleshooting OX253P User s Guide 180 ...
Page 183: ...Chapter 18 Product Specifications OX253P User s Guide 184 ...
Page 215: ...Appendix B Setting Up Your Computer s IP Address OX253P User s Guide 216 ...
Page 227: ...Appendix C Pop up Windows JavaScripts and Java Permissions OX253P User s Guide 228 ...
Page 278: ...Index OX253P User s Guide 279 ...
Page 279: ...Index OX253P User s Guide 280 ...