[CentOS] Re: centos and apache DOS question

[Ralph Angenendt]

Jim Perrin wrote:
>> That part I understand. AFAIK there is no way to stop that kind of thing
>> without the help from the upstream provider.
> 
> There's also an apache module you can use which may help. While it
> won't stop everything, it may help a bit with your current situation.
> http://www.zdziarski.com/projects/mod_evasive/  It's designed to help
> apache deal with brute force DOS attempts.

But do be careful with that one. Though it is designed to look for
"X-Forwarded-For"-Headers by caching proxies, not all proxies set that
header. So you might deny access to people using those proxies. And you
have to look at traffic patterns for your website first, so that you do
not set the access limits too low and deny regular traffic to your
website (if you - for example - have many small images on your website).

Cheers,

Ralph

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