Re: netstat *:* udp sockets

[Philip Guenther]

On Thu, Dec 13, 2018 at 10:40 AM Ted Unangst <t...@tedunangst.com> wrote:

> netstat -an tells me I am listening to all the udp.
>
> Active Internet connections (including servers)
> Proto   Recv-Q Send-Q  Local Address          Foreign Address
> (state)
> udp          0      0  *.*                    *.*
> udp          0      0  127.0.0.1.53           *.*
> udp          0      0  *.*                    *.*
> udp          0      0  *.5353                 *.*
> udp          0      0  *.*                    *.*
>
> What are those *.* sockets doing? How can you listen to all the ports?
>

Those are just UDP sockets on which connect() hasn't been called and that
aren't in the middle of a recvfrom()  or recvmsg(), no?


And, perhaps more directly, how would I block this in pf.conf?
>

Excellent choice, blocking dhclient from receiving the leases that it
requests.
"What problem are you trying to solve?"

Philip Guenther