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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...
Yes - that is why I suggested changing both ReadyNAS to use non-standard ports. That should work fine in most remote locations (and is what I do).
pugilares wrote: Not so long ago I had a problem with port 21. My router did strange things with the FTP commands sent through this port. I have changed command port to something completely different on the server and forwarded the same port on the router. Since then I have no problem with FTPing from outside of my LAN.
Though corporate firewalls are sometimes configured to disallow any outgoing traffic that they don't recognize. If Slasky's is configured that way, then he likely will have to pick only one ReadyNAS to reach from work, and it would need to use port 21 (to ensure that the corporate firewall recognizes it as FTP). He could still access the other ReadyNAS files using https.
EDIT: since https is allowed, another approach is to manage the home router remotely through https, and change the forwarding rule for port 21 when he wants to access the other ReadyNAS. That is cumbersome, but would work.
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