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That Grumpy BSD Guy: Why Not Use Port Knocking?

Apr 12, 2012, 03:11 (1 Talkback[s])
(Other stories by Peter N. M. Hansteen)

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"The robots currently at work knocking around for your guessable password could easily be repurposed to guess your Unicode password currently known as your port knocking sequence, and quite likely have been already. Plus, we already have authpf(8) for network-level restrictions on access.

"Whenever you write about security in general and SSH security in particular (and for good measure also get slashdotted for your efforts), the comments inevitably turn up a variety of useful and less useful suggestions.

"The April 6th, 2012 article about the possible preparations for a new round of slow bruteforcers was no different. Some of these recurring ideas are worthy of some more attention, and a more or less complete list is as follows - "

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