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Try port knocking. It is very effective. |
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Your ssh port will be closed until you successfully hit certain number |
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of ports and even though the ssh port will be open only to the IP |
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address that successfully opened the port all others will see ssh port |
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as closed. |
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|
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-- |
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#Joseph |
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|
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On Mon, 2006-06-05 at 12:06 -0300, Leandro Melo de Sales wrote: |
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> Hi, |
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> |
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> today when I was checking the server log I got many external |
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> attempts to connect to my sshd service: |
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> |
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> ... |
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> Jun 5 05:09:45 embedded sshd[4740]: Invalid user barbara from x.y.w.z |
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> Jun 5 05:09:46 embedded sshd[4742]: Invalid user barb from x.y.w.z |
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> Jun 5 05:09:48 embedded sshd[4744]: Invalid user barbie from x.y.w.z |
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> Jun 5 05:09:50 embedded sshd[4746]: Invalid user barbra from x.y.w.z |
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> Jun 5 05:09:51 embedded sshd[4748]: Invalid user barman from x.y.w.z |
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> Jun 5 05:09:53 embedded sshd[4750]: Invalid user barney from x.y.w.z |
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> ... |
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|
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-- |
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