will do the job for you!
:)
regards,
Guillermo.
On 7/18/06, Michael Yep <myep@xxxxxxxxxxxxxx
> wrote:
I have heard of this method, but I thought it was better to stop them at
the firewall level. right?
Guillermo Garron wrote:
> If what you want to do is to block offending IPs, let's say IPs who
> try to hack your systems, you would better use
>
> denyhosts
>
> yum install denyhosts
> vi /etc/denyhosts.conf
>
> It will automatically put the offending IPs on the /etc/hosts.deny for
> some time (you can configure that time)
>
>
> :)
> regards,
> Guillermo.
>
>
> On 7/18/06, *David Cary Hart* <Fedora@xxxxxxxxxxx
> <mailto:Fedora@xxxxxxxxxxx >> wrote:
>
> On Tue, 18 Jul 2006 14:24:56 -0500, Michael Yep
> <myep@xxxxxxxxxxxxxx <mailto:myep@xxxxxxxxxxxxxx >>
> opined:
> > Hello
> >
> > I know that the preferred way of controlling access is to use
> > whitelists, but for my case I'd like to use IP blacklisting.
> > Now using a script like
> > #!/bin/bash
> >
> > if [ -f badips.txt ]
> > then
> > for BAD_IP in `cat badips.txt`
> > do
> > iptables -A INPUT -s $BAD_IP -j DROP
> > done
> > else
> > echo "Can't read badips.txt"
> > fi
> >
> > I have like 96 banned IPs so far. I am wondering about the possible
> > performance hit on my system, and the limits of iptables.
> > What if I have thousands?
> >
> At some point it affects performance. There are some workarounds.
> What problem are you trying to solve? What causes you to block an IP?
>
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