New ZeroConf Spec
Scott James Remnant
scott at ubuntu.com
Tue Jul 4 14:25:05 BST 2006
On Mon, 2006-07-03 at 20:48 -0700, Dan Kegel wrote:
> There should be no exception: there should be no open ports by default.
>
This isn't actually entirely true; we currently have two open ports by
default:
If you're on a network with DHCP, the DHCP client listens on UDP port 68
to receive responses from the DHCP server.
And every time you make a DNS query, a UDP port is opened to receive the
response from the DNS server.
Both of these are issued from software that has a very long pedigree,
and of which we can be vaguely confident that it is not a security
problem.
Avahi isn't yet at that state, so it is not permitted an open port by
default.
Scott
--
Scott James Remnant
scott at ubuntu.com
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