This thread went off topic and then argument unfolds... but why?
The OP hasn't come back to clarify what he meant. ACT indeed does double NAT and it affects
HOSTING a FTP server from your connection. Not connecting to one. Big difference.
If you really need to host an FTP server, do it on a non standard port and have it open from ACT - ACT will give you a free private static IP with a bunch of ports open (usually its all, but they're limiting it now). Or, just pay up for a static and move on? I don't see how net neutrality is in question. It's not like they're limiting FTP connectivity to their favorite server or something.
IPv4 shortage is a big problem for ISPs like ACT who entered the game late, unlike BSNL and Airtel who are sitting in a pool of addresses.
If its malpractice is malpractice, today FTP, and tomorrow SMTP, how long we as customer suffer ?
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Sorry, I had to quote on you on this one but, which ISPs
DON'T block outgoing SMTP? Email spam is a real problem, and due to the lack of IPv4 addresses, ISPs are trying to block spammers misusing their IPs. I don't know the extent of such limitation here in India, but it's generally a big problem everywhere else.