2013-07-25 - Re: [GRASE-Hotspot] ARP out of connections

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From: Tim White <ti***8@gmail.com>
Message Hash: 25464956c8cf55e1e0c593a6342ff8442b36e91415181473720e1c178877c214
Message ID: <51F0FB23.909@gmail.com>
Reply To: <1374558500.3451.YahooMailNeo@web124901.mail.ne1.yahoo.com>
UTC Datetime: 2013-07-25 03:17:07 UTC
Raw Date: Thu, 25 Jul 2013 20:17:07 +1000

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On 23/07/13 15:48, jb wrote:
> hi tim,
>
> is my server breached with the error below?
>
> Jul 23 21:43:59 wireless coova-chilli[1174]: dhcp.c: 5570: ARP: out of 
> connections
> Jul 23 21:43:59 wireless coova-chilli[1174]: dhcp.c: 642: reached max 
> connections!
>
> currently, these showed up when there were only 2 users connected.
>
> then nobody can login..the captive portal page wont show up..
>
> thanks tim

This sounds like someone is DoS you with DHCP requests. In your logs do 
you see lots of requests for DHCP?

There is a maxclients option that you can enable, however if it's a DoS 
that won't help and you'll need to look at your network to see how you 
can reduce it.

Tim

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