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Why I close SSH port 22 entirely (and what I use instead)
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Why I close SSH port 22 entirely (and what I use instead)

Hacker News·about 2 months ago
#zmPd4NiB

fail2ban and key-only auth are not enough. fwknop Single Packet Authorization keeps port 22 closed at the firewall, opens it for your IP for a few seconds, then closes it again.

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