Issue with IIS 7.5 ftp server and wsftp client
Recently I replaced a Win2003sp2 server with Win 2008R2 server. The firewall does not permit passive connections. Client used wsftp or filezilla to ftp files. If client connects using active mode it goes thru in 2003 and 2008R2 server. If client
uses passive mode in wsftp it initially fails and automatically switches to active mode and ftp is successfull in win 2003. But with win 2008R2 after passive fails the client switches to active mode but gets error 425.Ron
August 15th, 2011 12:20pm
Hello,
for IIS better use: http://forums.iis.net/Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.
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August 15th, 2011 12:30pm
We contacted MS for this issue. The issue was that the new security feature introduced with iis 7.5, called data channel security would not allow this setup to work. Had to set the
matchClientAddressForPort and
matchClientAddressForPasv to False and it now works fine. Not that MS has got this wrong, but just that we need this to work for the time being.
See below link
http://www.iis.net/ConfigReference/system.applicationHost/sites/site/ftpServer/security/dataChannelSecurity
Ron
Ron
September 1st, 2011 2:38am