WSFTP on W2K to Solaris 8 FTP server timeout on large files
Posted on 2003-02-20
An ftp transfer of a large file (circa 800k) from the WSFTP client on W2K to a standard Solaris 8 ftp server fails while a small file (circa 5k) is successfull.
The FTP connection is established on port 21 and a small file tarnsfered OK (port 20 - active). When a large file is transfered the file is created on the Solaris system as 0 blocks and never increases. After a couple of minutes the WSFTP client times out and the transfer fails leaving the target file at 0 blocks.
'netstat -an' shows connections are left in the 'LISTEN' state on ports 20 & 21 on the Solaris server.
The Twist: if a standard 'ping' is run in paralell from the W2K system the large file transfers OK!!!