Solved

FTP with SSL connection (WS FTP pro / IIS 5) "500 'AUTH SSL': command not understood"

Posted on 2004-10-09
4
2,392 Views
Last Modified: 2013-12-04
Issue: WS FTP Pro cannot establish FTP with SSL connection. 500 'AUTH SSL': command not understood

Environment:

 Server: IIS 5 on Windows 2000 Server (latest Updates from MS), Thawte Certificate Installed
 Client: WS FTP Pro 9.01 Client for Windows (98,2000,XP,2003...)

Problem:

 Regular FTP connection can be established with proper USERID/PASSWORD.
 "FTP with SSL" connection doesn't succeed; give following error:
==================================================================================
Finding Host ftp.starrfish-xyz.com...
Connecting to 142.35.61.118:21
Connected to 142.35.61.118:21 in 0.015625 seconds, Waiting for Server Response
Initializing SSL Session ...
220 starfish Microsoft FTP Service (Version 5.0).
AUTH SSL
500 'AUTH SSL': command not understood
==================================================================================

Any suggestion regarding problem/ solution will be greatly appreciated.


Thanks,

tjipro
0
Comment
Question by:tjipro
  • 2
  • 2
4 Comments
 
LVL 34

Expert Comment

by:Dave_Dietz
ID: 12267701
The Microsoft FTP service does not support SSL in any of its versions to date.

If you want to use SSL secured FTP you will need to move to a different FTP server product.

Sorry.

Dave Dietz

0
 

Author Comment

by:tjipro
ID: 12272687
Dave, this is interesting. Is it possible to use IIS web server for FTP with SSL by using any interface that you know of?

Thanks,
tjipro.
0
 
LVL 34

Accepted Solution

by:
Dave_Dietz earned 125 total points
ID: 12273548
If you are looking for secure file transfers the only native way to do this in IIS is via WebDAV.

Do a search on WebDAV in the IIS Help files and you should find enough to get you started.

If you are tied to FTP for some reason you could use an SSL proxy for FTP.  There are some free and some commercial SSL proxies that can be used for secure FTP.  The general idea is that you create an SSL connection to the proxy (often installed on the same machine) which then makes an unsecure connection to the FTP server (since this happens internally the traffic is not vulnerable to sniffing on the Internet).

A couple samples on the web (I have not tested/used these go I make no guarantees):

http://www.kiesoft.com/proxy/index.htm
http://www.versiontracker.com/dyn/moreinfo/win/23472

Dave Dietz
0
 

Author Comment

by:tjipro
ID: 12278069
Dave, Thanks for this useful information.

tjipro
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In today's information driven age, entrepreneurs have so many great tools and options at their disposal to help turn good ideas into a thriving business. With cloud-based online services, such as Amazon's Web Services (AWS) or Microsoft's Azure, bus…
The term "Bad USB" is a buzz word that is usually used when talking about attacks on computer systems that involve USB devices. In this article, I will show what possibilities modern windows systems (win8.x and win10) offer to fight these attacks wi…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question