[users@httpd] efficient abuse page

[Marc <Ma...@f1-outsourcing.eu>]

I have currently some abuse page that notifies the ip is blocked. I am generating this page with php because I want to display the ip adres on this page. Is there a more efficient way to generate a page with one line of text and the blocked ip address?
Maybe directly in apache without using php-fpm?

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Re: [users@httpd] efficient abuse page

[Rainer Canavan <ra...@avenga.com.INVALID>]

On Thu, Jan 16, 2025 at 11:28 AM Marc <Ma...@f1-outsourcing.eu> wrote:
>
> I have currently some abuse page that notifies the ip is blocked. I am generating this page with php because I want to display the ip adres on this page. Is there a more efficient way to generate a page with one line of text and the blocked ip address?
> Maybe directly in apache without using php-fpm?

Check the documentation of mod_filter, mod_substitute and mod_sed. I
would assume that it should be possible to replace a placeholder in
your ErrorDocument as needed, but I haven't tried that myself.

Rainer

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Re: [users@httpd] efficient abuse page

[Daniel Gruno <hu...@apache.org>]

On 1/16/25 11:27, Marc wrote:
> I have currently some abuse page that notifies the ip is blocked. I am generating this page with php because I want to display the ip adres on this page. Is there a more efficient way to generate a page with one line of text and the blocked ip address?
> Maybe directly in apache without using php-fpm?

You can do just about anything you like with mod_lua, including rate 
limiting, custom block messages, and more.

If you already know that an IP is supposed to be blocked, you can use 
the LuaQuickHandler[1] to serve up a message before any other processing 
happens in httpd (a quick handler fires as soon as a request is mapped 
to a virtual host, but before any file-system/rewrite/auth/whatever runs).

If you'd rather do it as a filter on responses, you can use the 
LuaOutputFilter[2] directive and set up a filter.

We make use of both of those at the ASF itself for rate- and bandwidth- 
limiting on select services, and it works well.

[1] https://httpd.apache.org/docs/trunk/mod/mod_lua.html#luaquickhandler
[2] https://httpd.apache.org/docs/trunk/mod/mod_lua.html#luaoutputfilter

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