geo-ip + nginx

[Igor Sysoev]

On Thu, May 28, 2009 at 08:46:13AM -0700, Payam Chychi wrote:

> 2009/5/28 Igor Sysoev <is at rambler-co.ru>:
> > On Thu, May 28, 2009 at 08:21:16AM -0700, Payam Chychi wrote:
> >
> >> hey guys,
> >>
> >> anyone know the upper limits of number of acl lines for geo-ip /w
> >> nginx? I have a list of 7000 lines and i feel that i might be hitting
> >> a performance wall at 20-30mbps of request (6-9k req/sec)
> >> boxes im using are xeon 2.4ghz+ dual cor/dual proc + 4gig ram
> >
> > If you use geo variables, then there is no limit.
> > I use about 200,000 addreses.
> >
> >
> > --
> > Igor Sysoev
> > http://sysoev.ru/en/
> >
> >
> 
> I see, so I assume you load the entire 200k list once, then refer back
> to it for one/or/more configs? the way i am doing it is I have 1
> global list that applies to all configs then I also have a 2nd list
> that applies to individual configs0

We use single geo variables for geo targeting, but not for blocking.

> 1st list drops all known back hosts (default = ddos)
> 2nd list allows connections only from particular sources that match
> the list (default = 0)
> 
> ever have any issues loading multiple lists in geo with different variables?

No issues.

> ex:
>       location / {
>                if (  $ddos_ru = ddos ){
>                         return 403;
>                         break;
>                 }
> 
>                if ( $geo2 = 0 ) {
>                         return 403;
>                         break;
>                 }

These "break"s are useless.

Also I prefer these way:

geo $ddos_ru {
    default  1;
    ...      0;
    ...      0;
    ...      0;
}

geo $geo2 {
    default  1;
    ...      0;
    ...      0;
    ...      0;
}

       if ($ddos_ru) {
           return 403;
       }

       if ($geo2) {
           return 403;
       }

> 
>          proxy_pass              http://LB_HTTP_x.x.x.x;
> 	 proxy_intercept_errors on;
> 	 proxy_cache             one;
>          proxy_cache_key         x.x.x.x$request_uri;
>          proxy_cache_valid       200  1h;
> 	 proxy_cache_valid       404 5m;
>          proxy_cache_use_stale   error timeout invalid_header;
>          }
> 
> 
> -- 
> Payam Tarverdyan Chychi
> Network Security Specialist / Network Engineer

-- 
Igor Sysoev
http://sysoev.ru/en/