[Samba] Multicast DNS required?
L.P.H. van Belle
belle at bazuin.nl
Wed Sep 24 00:39:29 MDT 2014
and remember..
if you dont use it, turn it off...
You wont be the first where the printer is "somehow" set to 99 copies per pages ;-)
or even worse... and then im not talking about printers..
keeping protocols enabled even when you dont use them is a big security leak.
Louis
>-----Oorspronkelijk bericht-----
>Van: ryana at reachtechfp.com
>[mailto:samba-bounces at lists.samba.org] Namens Ryan Ashley
>Verzonden: woensdag 24 september 2014 1:22
>Aan: samba at lists.samba.org
>Onderwerp: Re: [Samba] Multicast DNS required?
>
>Bear in mind, it isn't just Apple products. HP and other printer
>manufacturers are using ".local" for their wireless printers now also.
>Generally speaking, these won't be in a corporate environment due to
>nice big machines like a Xerox Fiery, but if they do make
>their way into
>the environment, they can cause trouble also. Good luck!
>
>On 09/23/2014 07:01 PM, James wrote:
>> Ryan,
>>
>> Thanks for the explanation and link. Will follow up and review.
>> Looks like I may have trouble up ahead seeing as the powers that be
>> want to introduce apple products into the domain.
>>
>> On 9/23/2014 6:40 PM, Ryan Ashley wrote:
>>> mDNS is also called Bonjour on Apple systems (or Windows
>system with
>>> iTunes and such installed). This is used for something unrelated to
>>> actual DNS. In Linux we have "avahi" that does the same thing.
>>> However, a domain ending in ".local" can have issues due to
>zeroconf
>>> things (printers, wireless TV's, etc) use that domain. In other
>>> words, never, ever end a domain name in ".local". I use
>".lan" for my
>>> domains. The issue is common on older domains that have
>been upgraded
>>> dozens of times. Even I had issues with it for a while. I do not
>>> believe Samba needs mDNS/zeroconf support though.
>>>
>>> You can read more on the matter at the link below. One of
>my clients
>>> (I picked them up a few years ago) had a domain ending in ".local"
>>> and they had begun using Apple devices (phones, iPads) and had all
>>> kinds of issues due to the ".local" domain being used by them. Long
>>> story short, I got lucky when their DC died and I got to do a new
>>> domain. Now everything is as smooth as butter!
>>>
>>> http://en.wikipedia.org/wiki/.local
>>>
>>> On 09/23/2014 03:34 PM, James wrote:
>>>> Hello,
>>>>
>>>> I noticed all my DC's have port 5353 closed. I'm using the
>>>> internal DNS and wasn't sure if multicast DNS must be
>enabled? I do
>>>> not appear to be having any DNS issues. My only concern is
>with the
>>>> wiki on Multicast DNS.
>>>>
>>>> "By default, mDNS only and exclusively resolves host names ending
>>>> with the |.local| top-level domain (TLD). This can cause
>problems if
>>>> that domain includes hosts that do not implement mDNS but can be
>>>> found via a conventional unicast DNS server. Resolving such
>>>> conflicts requires network configuration changes that violate the
>>>> zero configuration
>>>> <http://en.wikipedia.org/wiki/Zero_configuration_networking> goal."
>>>>
>>>> Given my domain is 'domain.local'. I wasn't sure if I should find
>>>> out why the port is closed. Thanks.
>>>>
>>>
>>
>
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