How do I prevent unauthorized ssh login attempts?

[Andreas Widerøe Andersen]

On 4/26/07, Duane Hill <d.hill at yournetplus.com> wrote:
>
> On Thu, 26 Apr 2007, Pietro Cerutti wrote:
>
> > On 4/26/07, Andreas Widerøe Andersen <wodfer at gmail.com> wrote:
> >> On 4/26/07, Arek Czereszewski <arekczer at gmail.com> wrote:
> >> >
> >> > Andreas Widerøe Andersen wrote:
> >> > > I'm getting a lot of unauthorized ssh login attempts. I have a
> pretty
> >> > basic
> >> > > FreeBSD 6.2 setup. I have compiled my own kernel. Here's what I get
> > from
> >> > my
> >> > > daily security run output:
> >> > [...]
> >> >
> >> > Run sshd on other port.
> >> > And say about this your ssh users.
> >>
> >>
> >> Can I change the ssh port on a live server somehow without getting
> locked
> >> out? The server is on a remote co-location a flight away from me.
> >
> > Yes you can. SSH will keep your connection active until you log out,
> > then you can log in using the new port
>
> I will add the fact you will want to keep the current connection live and
> test after you make the change with a new connection. That way if the new
> connection fails, you still have a "foot in the door".


Thanks! I got it working without having to fly out to the server. :-)

Let's see if this will prevent the unauthorized sshd login attempts.

Cheers,
Andreas