On Tue, Sep 11, 2012 at 4:26 AM, Damien Fleuriot <[email protected]> wrote:

> On 11 Sep 2012, at 10:15, "Shiv. Nath" <[email protected]>
> wrote:
> > It is FreeBSD Release 9.0 x64 and i see this log very frequent almost
> every second, And i want to block this IP from reaching my server. i
> configured the PF as following but still see the same logs, it is like it
> did not work.
> >
> > Sep 11 07:49:56 titan avahi-daemon[1567]: Received response from host
> 41.211.2.239 with invalid source port 4331 on interface 'em0.0'
>
> It says it received a *response* so my understanding is *you* are trying
> to connect.
>

But it's avahi (a zeroconf implementation) so the response is to a
broadcast; the remote machine in question may also be broadcasting.

I would actually question why avahi is even enabled on a server; perhaps
the correct answer is simply to disable it in rc.conf.

-- 
brandon s allbery                                      [email protected]
wandering unix systems administrator (available)     (412) 475-9364 vm/sms
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