Two FTP sites behind ISA

[IS300]

I need to setup two ftp sites behind our firewall for two different purposes.

The first one is working fine, on SERVER1 Port 21. The second one will be SERVER2 Port 31.

I can log into the second server okay, but when it gives me an error soon after:

"An error occurred opening that folder on the FTP Server. Make sure you have permission to access that folder.

Details:
200 Type set to A.
500 Invalid PORT Command.
500 'LPRT 6,16,0,0,0,0,0,0,0,0,9,4,0,0,0,0,34,113,2,4,255': command not understood

I am using Internet Explorer to access it. I have setup IIS the exact same way as the other server, and I the proper permissions. I know this because I can create a folder, even though it gives me an error, but when I look at the directory on that actual machine, I can see the folder created.

Has this happened to anybody before?

 

[coco10]

hi check this for help..

http://www.isaserver.org/tutorials/2004pubftpaltport.html

and for complement you can read all of this

http://www.isaserver.org/tutorials/Issues_with_the_Internet_Explorer_FTP_Client.html

http://support.microsoft.com/?kbid=323446

http://www.kbalertz.com/814473/Inte...gh.Internet.Security.Acceleration.Server.aspx

and last but not least

http://www.isaserver.org/tutorials/Publishing-Secure-FTP-Servers.html

http://www.isaserver.org/articles/How_the_FTP_protocol_Challenges_Firewall_Security.html

hope its help
coco10