Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

I have an IIS FTP set up on Windows 2003 SP2 (S1). Everyday in the early morning, a script on another server (S2) will run and initiate FTP transfer of pulling log files from S1 to S2. The FTP client we're using is built-in FTP.exe in Windows 2000 on S2.

Recently we replaced S1 with a new server however we kept the IP address. There are multiple IP addresses on new S1.

Ever since the new S1 was in place, the '426 Connection closed; transfer aborted.' errors haven been occuring randomly. The log indicated that the transfer started ok however the file cannot be transferred completely, as per log below:

mget access*.log
200 Type set to A.
200 PORT command successful.
150 Opening ASCII mode data connection for access02232010.log(205777167 bytes).
426 Connection closed; transfer aborted.
ftp: 20454832 bytes received in 283.95Seconds 72.04Kbytes/sec.

The firewall monitor suggested that the connection was setup in passive mode however I've been told that MS FTP.exe doesn't support passive mode. Though I can see the response of 'entering passive mode' from server when typing in 'quote pasv'.

My network admin has told me to try the transfer in active mode however I don't know how to open active mode on client side. It's getting really frustrating. Wish someone here has the right knowledge/experience could shed me a light.

Cheers.

share|improve this question
add comment

2 Answers

up vote 1 down vote accepted

Finally resolved by setting NIC on FTP server from 'half-duplex' to 'full duplex'.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.