Ports are destinations really, not contents. They can block mail from everyone, ... | Hacker News

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tpxl on Dec 13, 2017 | parent | context | favorite | on: A list of ways to “Break the Internet” for the 48 ...

Ports are destinations really, not contents.

They can block mail from everyone, or they can allow it for everyone, but they cannot block or throttle a single provider.

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