[CentOS] Re: IPTables Blocking Brute Forcers
swsnyder at insightbb.com
Thu Nov 16 18:36:50 UTC 2006
On Thursday 16 November 2006 12:10 pm, Brian Marshall wrote:
> Does anyone have suggestions on how I can script IPTables or put some
> other security measure in place that could detect brute-forcing and
> reject from their IP?
You can use IPTables to limit the rate of connections. I allow only 2
connections from a given IP address within each 3 minute period.
That allows for a quick retry when I mis-type the password, but makes for
a very sloooooooow brute force attack. Most script kiddies aren't
willing to put in that kind of time on a single target. I hardly ever
see more than 2 attempts to crack my box now.
More information about the CentOS