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Non Shared Ports on Amazon EC2

Suppose I want to listen on a non-shared port (e.g. 9090) 24/7 and send data to another non-shared port (e.g. 8980).

Is this possible in an instance of Amazon EC2? (Windows 2003 or 2008)

Note. I did a search and I found that if I want to do this; then I have to open ALL ports; which seems wrong to me.

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2 answers

Yes it is possible.

There is nothing special in the environment that would prevent you from doing this. However, you will need to change the security group for the instances to allow this association. And to ensure that the instance level firewall also allows this message.

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Source: https://habr.com/ru/post/1721008/

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