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18 lines
442 B
Markdown
18 lines
442 B
Markdown
# Set up port knocking
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Technique where a daemon keeps listening on specific ports for a specific sequence of connections.<br/>
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When the correct sequence is used, the daemon issues a configured command, usually to open a defined port for the client
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only.
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This is frequently used to open the SSH port in a server for a specific client.
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See [Knockd].
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<!-- Knowledge base -->
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[knockd]: knockd.md
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