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Forum Discussion
FTP server using passive ports
Hello everybody. This is more of a network-question than a readynas one. I've just recently bought an Ultra 4 in an addition to my Duo. I've had, and still have the FTP service running at the Du...
That's basically what I've done. The only problem here is that I need to use ports lower than 1024 to access anything from my work, as they've blocked any port over 1024 on the firewalls.
The setup is like this:
Duo Server
Port: 21
Passive Ports: 14170-14180
Router settings:
Port 21 forwarded from port 21 external to port 21 internal to Duo IP
Ultra Server:
Port: 27
Passive Ports: 14190-14200
Router settings:
Port 27 forwarded from port 27 external to port 27 internal to Ultra IP
Ports 14190-14200 forwarded from port 14190-14200 external to port 14190-14200 internal to Ultra IP
What's strange is that the Duo doesn't use its passive ports, just the normal one, as the Ultra pops in on the passive ports only.
I've also tried changing the portnumber of the Ultra server just to check that it doesn't collide with another service.
Thanks for the answers though
The setup is like this:
Duo Server
Port: 21
Passive Ports: 14170-14180
Router settings:
Port 21 forwarded from port 21 external to port 21 internal to Duo IP
Ultra Server:
Port: 27
Passive Ports: 14190-14200
Router settings:
Port 27 forwarded from port 27 external to port 27 internal to Ultra IP
Ports 14190-14200 forwarded from port 14190-14200 external to port 14190-14200 internal to Ultra IP
What's strange is that the Duo doesn't use its passive ports, just the normal one, as the Ultra pops in on the passive ports only.
I've also tried changing the portnumber of the Ultra server just to check that it doesn't collide with another service.
Thanks for the answers though
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