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RBS Knowledge Library

Article Number: 100065
Software: RBACKUP Version ALL

The choice of port# used is 100% up to you.

The issue with port 21 is to support a number of different router models. That's not always necessary. If you're connected direct to the Internet and have a public IP address, its not an issue, and if your router provides for overrideing the default FTP port, it's not an issue.

Port 21 being the standard ftp port, many routers automatically handle ftp better there. My router (a D-Link Dl-713P Wireless Gateway) allows the specifcation of a NON STANDARD ftp port, which handles it automatically.

If you have a router that doesn't handle it well, you may not be able to support PASSIVE mode transfer, which certain clients will only be able to make. A client behind a router cannot usually handle non-passive or active connections.

I like port 2774 because all the little robots and other denizens cruising the web often target port 21 for inquiries, where port 2774 is much quieter.

(TECH)

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