Sounds like you have a use case to implement the the /mnt/kd/dnsmasq.static 
trick/workaround.

Lonnie


> On Aug 10, 2023, at 6:38 PM, Michael Knill 
> <michael.kn...@ipcsolutions.com.au> wrote:
> 
> Hi Lonnie
>  
> Whoops sorry for assuming you are psychic. It’s the dyndns-host-open plugin 
> for the firewall.
> You mentioned with the /mnt/kd/dnsmasq.static trick (I called it workaround) 
> that it should only be implemented if it was not working. But DNS not working 
> would be a bad thing and although I have a static entry for access in the 
> firewall it would prevent access for all other addresses and ports using the 
> dyndns-host-open plugin.
>  
> Yes I suspect it would be rare but the impact would be high if it happened.
>  
> Regards
> Michael Knill
>  
>  
> From: Lonnie Abelbeck <li...@lonnie.abelbeck.com>
> Date: Thursday, 10 August 2023 at 11:26 pm
> To: AstLinux Users Mailing List <astlinux-users@lists.sourceforge.net>
> Subject: Re: [Astlinux-users] Looking to implement DNS-TLS
> 
> Hi Michael,
> 
> Not sure what you mean by "dyn-dns plugin"?  Plugin to what?
> 
> In this day and age, certificates that depend on the system to have a valid 
> time are quite common.
> 
> If you are using Network tab -> "Dynamic DNS Update:", the update will use 
> HTTPS (via curl) to secure your credentials, which will require a valid 
> system time.  Note the "Dynamic DNS Update:" (set external DNS record) has 
> nothing to do with "DNS-TLS" (retrieve DNS).
> 
> The AstLinux system clock is maintained via one or more of:
> 
> 1) CMOS flash with battery RTC (bare metal)
> 
> 2) Virtual Machine host provides date/time (VM)
> 
> 3) Time is set on startup using chrony using Network tab -> "Network Time 
> Settings:"
> 
> 
> While I have not had any practical issues over the years using "DNS-TLS", you 
> can either use a manual IPv4 address in "Network Time Settings:" or use the 
> /mnt/kd/dnsmasq.static trick as described here [1] to "almost" guarantee the 
> clock is valid at startup.
> 
> Lonnie
> 
> [1] 
> https://doc.astlinux-project.org/userdoc:tt_dns_tls_proxy#possible_startup_issues
> 
> 
> 
> 
> > On Aug 10, 2023, at 1:28 AM, Michael Knill 
> > <michael.kn...@ipcsolutions.com.au> wrote:
> > 
> > Hi Group
> >  
> > I’m currently using the dyn-dns plugin and wanting to extend it for 
> > additional Astlinux access.
> > I’m concerned that DNS traffic is currently not being encrypted so I want 
> > to use DNS-TLS.
> >  
> > I have two questions:
> >        • As you have mentioned in the notes, as it relies on reasonably 
> > correct time which needs DNS to be set correctly, I am concerned that we 
> > will not be able to access the system with dyn-dns if this occurs. Should I 
> > implement the workaround for this in /mnt/kd/dnsmasq.static always?
> >        • I currently have 1.1.1.1 & 8.8.8.8 configured as my standard DNS. 
> > I assume this is not possible with the DNS Proxy and DNSSEC? I do realise 
> > that Anycast DNS is very close to 100% uptime but I’m just cautious.
> >  
> > Regards
> >  
> > Michael Knill
> > Managing Director
> >  
> > D: +61 2 6189 1360
> > P: +61 2 6140 4656
> > E: michael.kn...@ipcsolutions.com.au
> > W: ipcsolutions.com.au
> >  
> >  <image001.png>
> > Smarter Business Communications
> >  
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> 
> 
> 
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