I understand that after connecting to your remote Linux server, you want to reach an IP addres 10.X.X.X that is on the Remote's Local Network, am I right?
well... first make sure that the other end is listening on the ftp port... is a network problem not a Linux one but here is some troubleshooting:
If the addres 10.X.X.X is on the remote server's local network, then try the following:
1. Ping the 10.X.X.X address.
2. Make sure that the FTP Server is running properly and listening to that address.
3. If you can ping but you cannot connect to ftp, then check your ftp config.
Next time please include more information about your error messages or so... Have a nice day