| 1 |
On Wednesday 25 October 2006 05:37, Mark wrote: |
| 2 |
> On 24/10/06, Andrew Ross <aross@g.o> wrote: |
| 3 |
> > There is an excellent article at |
| 4 |
> > http://www.debian-administration.org/articles/187 describing the use of |
| 5 |
> > the "recent" netfilter module in stopping brute-force ssh attacks at the |
| 6 |
> > firewall level. |
| 7 |
> |
| 8 |
> The negative with this approach is that it affects ALL ssh |
| 9 |
> connections, including valid ones. If a known user logs in correctly 4 |
| 10 |
> times in too short a time, they too are banned. |
| 11 |
> |
| 12 |
> Mark |
| 13 |
To mitigate this in ~/.ssh/config |
| 14 |
|
| 15 |
Host * |
| 16 |
ControlMaster auto |
| 17 |
ControlPath ~/.ssh/master-%r@%h:%p |
| 18 |
|
| 19 |
reuses the ssh connection for multiple ssh terminals. |
| 20 |
|
| 21 |
As Dale said before only a few static ips are used from the source so the |
| 22 |
rules should be easy. |
| 23 |
|
| 24 |
Andrew, good writeup. |
| 25 |
|
| 26 |
-- |
| 27 |
Daniel Black <dragonheart@g.o> |
| 28 |
Gentoo Foundation |
Archives