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I have an instance of Windows Server 2016 t2.micro on Amazon ec2. I installed IIS with FTP support. I followed this guide to make my ftp accessible externally:
https://forums.aws.amazon.com/thread.jspa?threadID=170411
But without effect, in Filezilla I can even "get" in the IP address of ftp, but no welcome message is received, and the connection closes immediately.
I set up the instance security groups like this:
But only the standard doors remain open, all the others I deifini ai do not open:
I don’t know why ... I don’t know what else to do. I’m desperate.
PS: HTTP (port 80) works well.
Windows Firewall is active?
– Jean Gustavo Prates
I just disabled, rebooted and nothing.. Looks something like ftp directory listing or ftp firewall la same...
– Linces Marques
Basically this is because FTP works actively and EC2 only accepts ftp connections passively. To resolve this you need to set up the public IP you assigned for your IIS instance, follow the link to how to do this: https://docs.microsoft.com/en-us/iis/publish/using-the-ftp-service/configuring-ftp-firewall-settings-in-iis-7#step-2-configure-the-External-ipv4-address-for-a-specific-ftp-site
– Caio Guioti