On Saturday 14 January 2012 18:04:00 Valentin V. Bartenev wrote:
> On Saturday 14 January 2012 17:27:53 double wrote:
> > Hello,
> >
> > I would like to limit the connections to 100 per 255.255.255.0
> > Is there a chance e.g. to zero the last byte of "$binary_remote_addr"?
> >
> > Something like:
> > set $remote_addr_24 "/$remote_addr/\.[0-9]*$/.0/"
> > limit_zone connectiontrack $remote_addr_24 16m;
> > limit_conn connectiontrack 100;
>
> # this captures only first 3 bytes of $binary_remote_addr:
>
> if ($binary_remote_addr ~ "^(\C{3})") {
> set $remote_addr_24 $1;
> }
>
>

or:

map $binary_remote_addr $remote_addr_24 {
default "";
~^(?P<bytes>\C{3}) $bytes;
}

wbr, Valentin V. Bartenev

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