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* knock.md and knockd.md * Update pages/linux/knock.md Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com> * Update pages/linux/knock.md Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com> * Update pages/linux/knock.md Co-authored-by: Wiktor Perskawiec <git@spageektti.cc> --------- Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com> Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>
20 lines
440 B
Markdown
20 lines
440 B
Markdown
# knock
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> Port knocking client to open specific ports on firewall.
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> More information: <https://manned.org/knock>.
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- Knock on ports using different protocols:
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`knock {{hostname}} {{portnumber}}:{{protocol}}`
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- Knock on port using UDP:
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`knock -u {{hostname}} {{portnumber}}`
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- Force usage of IPv4/IPv6:
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`knock {{-4|-6}} {{hostname}} {{portnumber}}`
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- Display errors and details of connection:
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`knock -v {{hostname}} {{portnumber}}`
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