Greetings, community!
Does anyone knows how to correctly allow FTP Access from Internal to External for FTP-Clients through TMG 2010?
I created the rule that Allow FTP and FTP over HTTP Protocols from Internal to External for specific AD Group, but it works very strange...
FTP Read-only flag is turned off for all Rules where it's possible.
Some distant FTP-servers works perfect without any Errors. But some have errors when FTP-clients (TotalCommander, FAR, FileZilla) try to get folder lists.
Errors like:
MLSD
425 Unable to build data connection: Software caused connection abort
If I try to reconnect several times, or refresh page (TotalCommander), then sometimes it shows folder lists.
If I try to connect to this servers through my old ISA 2004 server, all is perfect.
Additional, I found some strange messages from my DMZ-TMG servers:
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Maybe anyone knows how to solve this error? It's the error on my side or on External FTP-server side? Why some Servers are works fine and some with errors?
