Mailinglist Archive: opensuse (1503 mails)

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Re: [opensuse] Coordinated, distributed ssh attacks?
On Sat, 2009-10-03 at 17:16 +0200, Per Jessen wrote:
Per Jessen wrote:

Roger Oberholtzer wrote:

On Sat, 2009-10-03 at 08:58 -0400, Cristian Rodríguez wrote:
On 03/10/09 09:00, Roger Oberholtzer wrote:

I am not sure how to proceed.

You can't actually proceed ;-) this is an issue with any network
service on planet earth, but you can protect yourself of being
cracked by only using public key authentication.

I was thinking more along the lines of moving my sshd to a less known
port. I access it in a controlled fashion. So, having it on a
standard port is not (I think) a requirement for me. Then, our NAT
could simply drop the sshd port accesses on the well-known port.

Yes, that approach actually works very well.

I've just remembered the only drawback - using rsync, scp and others who
use ssh under the covers does become a little tiresome, but I think
both rsync and scp have environment variables that'll set a usable
default so you don't have to specify the new port all the time.

hence i would recommend using keys and disable all password-logins.
Other suggestion, use a VPN.
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