Re: [Proftpd-user] AWS ELB problem
"TJ Saunders" <[email protected]>
| Newsgroups | gmane.network.proftpd.user |
|---|---|
| Message-ID | <[email protected]> |
> I am able to connect to either load balancer and then list files and > change directories. When I try to transfer files (upload or download), > the transfer never starts and the control connection eventually times > out. I see some commands in the log, but I do not see any STOR or RETR > commands there. Nothing is logged related to the transfer except: > > "TYPE I" 200 - > "PASV" 227 - > > See below for the contents of the config file. What am I missing? How > can I troubleshoot further? > > PassivePorts 50000 50500 Are there any security group restrictions on your instances running ProFTPD? If so, do they allow incoming connections from this configured passive ports ranges? In general, using an FTP-unaware load balancer for FTP sessions is problematic, because the load balancer is unaware of the nature of FTP data connections, and does not necessary know that a new TCP connection (intended for a data transfer) needs to route, in a "sticky session" fashion, back to the same FTP server. You might find this useful/helpful: http://www.proftpd.org/docs/howto/AWS.html Hope this helps, TJ _______________________________________________ ProFTPD Users List <[email protected]> Unsubscribe problems? http://www.proftpd.org/list-unsub.html