Re: [gentoo-user] SSH authentication attempts - serious issue

[Leandro Melo de Sales]

2006/6/5, Leandro Melo de Sales <leandroal@×××××.com>:
> Yes, but how can I do it?
>
> 2006/6/5, Joseph <syscon@×××××××××.com>:
> > Try port knocking.  It is very effective.
> > Your ssh port will be closed until you successfully hit certain number
> > of ports and even though the ssh port will be open only to the IP
> > address that successfully opened the port all others will see ssh port
> > as closed.
> >
> > --
> > #Joseph
> >
> > On Mon, 2006-06-05 at 12:06 -0300, Leandro Melo de Sales wrote:
> > > Hi,
> > >
> > >    today when I was checking the server log I got many external
> > > attempts to connect to my sshd service:
> > >
> > > ...
> > > Jun  5 05:09:45 embedded sshd[4740]: Invalid user barbara from x.y.w.z
> > > Jun  5 05:09:46 embedded sshd[4742]: Invalid user barb from x.y.w.z
> > > Jun  5 05:09:48 embedded sshd[4744]: Invalid user barbie from x.y.w.z
> > > Jun  5 05:09:50 embedded sshd[4746]: Invalid user barbra from x.y.w.z
> > > Jun  5 05:09:51 embedded sshd[4748]: Invalid user barman from x.y.w.z
> > > Jun  5 05:09:53 embedded sshd[4750]: Invalid user barney from x.y.w.z
> > > ...
> >
> > --
> > gentoo-user@g.o mailing list
> >
> >


I mean, setup it!
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