You may receive a 550 Access is denied message to a MLSD command when accessing a FTP server published by Forefront TMG 2010

By / May 9, 2017

“A FileZilla FTP server was published with Forefront TMG 2010 with a non-web server publishing rule.

The FTP server was accessible with IE9 as FTP client but not with the Filezilla FTP client, which received a 550 Access is denied message; the logs on TMG do not show anything specific.
Below you can see the log from the Filezilla FTP client…”

For more information, check out:

http://carbonwind.net/blog/post/You-may-receive-a-550-Access-is-denied-message-to-a-MLSD-command-when-accessing-a-FTP-server-published-by-Forefront-TMG-2010.aspx

HTH,

Deb

DEBRA LITTLEJOHN SHINDER
MVP (Enterprise Security)
“MS SECURITY”
[email protected]

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About The Author

Debra Littlejohn Shinder is a technology and security analyst and author specializing in identity, security and cybercrime, utilizing her past experience as a police officer and police academy/criminal justice instructor. She has written numerous books and articles for web and print publications and has been awarded the Microsoft MVP designation for fourteen years in a row.

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