ISA FTP 550 Access is denied. in response to remote Quote commands over VPN circuit

Posted on 2011-05-06
Medium Priority
Last Modified: 2012-05-11
We use a ISA 2006 as a access firewall for remote clients using VPN to get to the internal network.

For the internal FTP host that the remote clients are talking too. They use a quote command to switch file systems on the host. I.E. "ftp>quote OSS" this command never makes it to the host and the ISA server sends a "550 Access is denied." response back to the ftp client.

Note we are not trying to publish the internal FTP server for internet access, simply accessing it via the VPN remotely for upload and download to the internal host.
Question by:fredsparkle
  • 2

Accepted Solution

fredsparkle earned 0 total points
ID: 35708386
Solution is:

1. Open ISA Management MMC
2. Right click on VPN clients access rule and choose configure FTP
3. Uncheck the “read only” box and apply the change

Author Closing Comment

ID: 35708388
it works

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