Using PASV From an Ubuntu Server to FTP Server
Digg
DZone
Reddit
Slashdot
StumbleUpon
del.icio.us
Facebook
FriendFeed
Furl
If you need to transfer files from your Ubuntu server to an FTP server, that requires passive mode (PASV), this andrewault.net blog can help you with firewall blocks. Don't worry though, your system is operating exactly as it is configured to. The explanation just requires a little understanding of FTP and firewalls.
"The tricky bits concern this second port that is negotiated. This port is not a fixed number, it is a dynamically allocated port above 1023. The port number is encoded in a packet as two numbers that need to be multiplied together to get the port number. The firewalls involved need to be smart enough to recognize the FTP negotiation and extract this data from the data, open that specified port and keep it open during the FTP session."
Solid state disks (SSDs) made a splash in consumer technology, and now the technology has its eyes on the enterprise storage market. Download this eBook to see what SSDs can do for your infrastructure and review the pros and cons of this potentially game-changing storage technology.
