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From "Jimmy Snell" <>
Subject [users@httpd] Re: Why is mod_limitipconn in Ubuntu 8.04 not working?
Date Thu, 17 Jul 2008 03:21:22 GMT
Dear David,

Thank you for your kindly and quick reply.

I am sorry that I thought the limitipconn module would totally prevent
the DoS attacker from connecting to TCP 80 port.

BTW, I am not sure how Apache and its DSOs work internally. But I
wonder whether there is a way to achieve the result I expected? If it
cannot done inside Apache or its DSOs, maybe it can be done by adding
a rule to the system iptables?

Thank you for your wonderful mod_limitipconn; hope it can be
integrated to Apache trunk soon.

On Thu, Jul 17, 2008 at 12:18 AM, David Jao <> wrote:
> If you are getting 503 responses then it looks like the module is working.
>  The module does not limit connections, because that would be impossible --
> a user has to connect to your web server before the module can even see the
> user.  The module does limit responses if there are too many connections,
> and that is what you are seeing.

Yours Truly,
James Z. Snell

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