04-20-2009, 12:19 PM
Join Date: Apr 2009
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Just pin down the issue.
Actually either provider or RIM is filtering the traffic. Everything goes smooth in FTP control connection . But when FTP server is asked to switch into passive mode, it replies the client with FTP data port .But either RIM or service provider is keeping an eye on traffic and as soon as data port is sent , they log it and if request for connection establishment is sent on that data port , they simply block it.
I tested it by making TCP connection at random port after passive mode command is sent to FTP server and it worked perfectly alright. But if i tried to make TCP connection at port received in response to passive mode command, it was simply blocked.
Please confirm me that who is responsible for data filtering , either service provider(Mobilink) or RIM itself.