SSH port forwarding can't work with vsftpd
From: FJY (fjye2001_at_yahoo.com)
Date: 10/21/03
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Date: Tue, 21 Oct 2003 04:10:28 GMT
I have a Linux box inside some firewall which blocks the traffic to port
under 1024. To bypass this firewall, I run ssh port forwarding on it,
like this:
ssh -g -L 10000:mylinuxbox:22 user@firewall
For example, if port 10000 is not blocked by the firewall, I can access my
Linux box via ssh (port 22) remotely by setting up port forwarding as
above.
However, if I run vsftpd (not wu-ftpd, I guess that'd work) on my Linux
machine, and I again use ssh port forwarding at the firewall:
ssh -g -L 20000:mylinuxbox:21 user@firewall
I can't access my FTP server from outside the firewall even if the FTP
client is in passive mode. The situation is, I can log on the FTP server
remotely, but I can't use ls or get or put. If I do so, the FTP client
hangs up after printing out "227 Entering Passive Mode" and IP/port.
Anyway has experience with this? Maybe there's a lot of confusion here. I
can clarify the case if necessary.
Thanks in advance.
Regards,
FYJ
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