Re: Setup a new 2003 DNS in a mixed mode of 2000 and NT4

From: Jeff Cochran (jeff.nospam_at_zina.com)
Date: 12/13/04 

Date: Mon, 13 Dec 2004 11:54:37 GMT

On Sat, 11 Dec 2004 09:56:51 -0600, "Herb Martin"
<news@LearnQuick.com> wrote:

>"Jeff Cochran" <jeff.nospam@zina.com> wrote in message
>news:41c20990.1118947912@msnews.microsoft.com...
>> On Thu, 9 Dec 2004 13:23:06 -0800, PBJ <PBJ@discussions.microsoft.com>
>> wrote:
>>
>> >We opened all of the ports that were in this TID# 179442
>> >But I noticed from the FW logs that the NetBios broadcasts were not
>allowed.
>>
>> Many firewalls won't pass NetBIOS brodcasts even if you open NetBIOS
>> ports for communication. NetBIOS brodcasts include broadcast
>> resolution of names as well as WINS broadcasts, so if you have an issu
>> involving the name resolution, allowing NetBIOS broadcasts through
>> your firewall may help. But it also sends traffic across zones that
>> may be unneeded, as well as containing information about your network.
>
>Almost no firewalls will pass NetBIOS broadcasts since
>most firewalls are implemented on some type of ROUTER
>and routers pass NO broadcasts by default.
>
>So this is true, even of non-firewall routers within an network.

Most enterprise-level firewalls allow some sort of NetBIOS broadcast
transfer. NetBIOS doesn't route, but that doesn't mean it can't be
passed by a device that routes. :)

Jeff

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