Issue Using Wildcards for Subdimain Redirecing
Reindl Harald
h.reindl at thelounge.net
Thu Feb 17 17:56:09 UTC 2022
Am 17.02.22 um 18:51 schrieb muhanad at plciq.com:
> I understood that, now, I have another issue. The main domain the is used in the zone ( zone "example.com" ) don't resolve to anything and I want it to be resolved from 8.8.8.8, while the sub-domains still resolve from my DNS as specified in the zone record file.
than you need the subdomains in own zone-files and don't delegate them
in the public view
BTW: stop talking about "be resolved from 8.8.8.8" when the terminology
is private and public views
> -----Original Message-----
> From: tale <d.lawrence at salesforce.com>
> Sent: Thursday, February 17, 2022 8:47 PM
> To: muhanad <muhanad at plciq.com>
> Cc: bind-users <bind-users at lists.isc.org>
> Subject: Re: Issue Using Wildcards for Subdimain Redirecing
>
> On Thu, Feb 17, 2022 at 3:34 AM muhanad <muhanad at plciq.com> wrote:
>> I have a main domain ( aa.example.com) with hunderds of subdomains ( bb.aa.example.com). I made a wildcard record to forward all subdomains (bb.) to a list of addresses in round-robin fashion. The problem I am fscing is the wildcard is forwarding anything towards the the IP ( example , "cc.bb." which is not a vaild subdomain). How can I limit that so it will only forwards ( bb.aa.example.com) and drops any invalid subdomains ( cc.bb.aa.example.com ).
>>
>> Note: aa, bb, and cc being any arbitary value.
>
> With a standard BIND zone, you can't. Wildcards match multiple labels. That goes to the earliest days of the DNS, https://www.rfc-editor.org/rfc/rfc1034#section-4.3.3.
>
> You'd need a specialized handler to do this.
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